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brief data sheet rev. 1.00 / june 2013 zspm10 05 true digital pwm controller (single - phase , single - rail ) smart power management ics power and precision
ZSPM1005 true digital pwm controller (single - phase, single - rail) ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 june 21 , 2013. all rights reserv ed. the material c o ntained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. the information furnished in this publication i s s ubject to changes without notice. for more information, contact zmdi via spm@zmdi.com . brief description the ZSPM1005 is a configurable true - digital single - phase pwm controller for high - current, non - isolated dc/dc supplies. it operates as a synchronous step - down converter in a single - rail and single - phase con - figuration. the ZSPM1005 integra tes a digital control loop, opti - mized for maximum flexibility and stability as well as load step and steady - state performance. in addition, a rich set of protection and monitoring functions is provided. to facilitate user configuration of the part, a set of configuration options can be pre - prog - rammed in the ZSPM1005 that can be selected by setting the values of two external resistors. zmdis pink power designer?; a pc - based, user - friendly interface to the ZSPM1005, can be used to expedite the design of the digital compensator. it offers intuitive configuration methods for additional features, such as protection and sequencing. once the part is programmed, the resistor options can be used to select the required configuration without a digital bus. feature s ? programmable digital control loop ? advanced, digital control techniques ? tru - sample technology ? ? state - law control ? (slc) ? sub - cycle response ? (scr) ? improved transient response and noise immunity ? protection features ? over - current protection ? over - voltage prote ction (vin, vout) ? under - voltage protection (vin, vout) ? overloaded startup ? restart and delay ? support for smod and zcd drivers ? fuse - based one - time programmable (otp) nonvolatile memory for improved reliability ? operation from a single 5v or 3.3v supply ? 2 - pin configuration for compensation, output voltage, and more benefits ? fast configuration and design flexibility improves time - to - market ? simplified design and integration ? fpga designer - friendly solution ? highest power density with smallest footprint ? pin - to - pin compatible with the zspm1000 pwm controller enabling point - of - load power module platform designs with or without digital communication ? higher energy efficiency across all output loading conditions available support ? evaluation kit ? pc - based pink power design er? physical characteristics ? operation temperature: - 40 c to + 125c ? v out max: 5v ? lead free (rohs compliant) 24 - pin qfn p ackage (4 mm x 4 mm) ZSPM1005 typical application diagram
ZSPM1005 true digital pwm controller (single - phase, single - rail) ? 2013 zentrum mikroelektronik dresden ag rev . 1.00 june 21 , 2013. all rights reserved. the material c o ntained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. optimal applications ? fpga de signs ? point - of - load power modules for single - phase applications including telecommunication, base stations, servers and storage ZSPM1005 block diagram ordering information product sales code description package ZSPM1005za1r 0 zspm100 5 lead - free qfn24 temperature range: - 40c to + 12 5c reel sales and further information www.zmdi.com spm@zmdi.com zentrum mikroelektronik dresden ag global headquarters grenzstrasse 28 01109 dresden, germany central office: phone +49.351.8822.0 fax +49.351.8822.600 zmd america, inc. 1525 mccarthy blvd., #212 milpitas, ca 95035 - 7453 usa usa phone +855.275.9634 zentrum mikroelektronik dresden ag, japan office 2nd floor, shi nbashi tokyu bldg. 4 - 21 - 3, shinbashi, minato - ku tokyo, 105 - 0004 japan zmd far east, ltd. 3f, no. 51, sec. 2, keelung road 11052 taipei taiwan zentrum mikroelektronik dresden ag, korea office u - space 1 building 11th floor, unit ja - 1102 670 sampyeong - dong bundang - gu, seongnam - si gyeonggi - do, 463 - 400 korea phone +82.31.950.7679 fax +82.504.841.3026 phone +408.883.6310 fax +408.883.6358 phone +81.3.6895.7410 fax +81.3.6895.7301 phone +886.2.2377.8189 fax +886.2.2377.8199 european technical support phone +49.351.8822.7.772 fax +49.351.8822.87.772 disclaimer : this information applies to a product under development. its characteristics and specifications ar e s ubject to change without notice. zentrum mikroelek tronik dresden ag (zmd ag) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. the information furnished hereby is believed to be true and accurate. however, under no circumstances shall zmd ag be liable to a ny customer, licensee, or any other third party for any sp ecial, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. zmd ag hereby expressly disclaims any liabilit y of zmd ag to any cust omer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liabilit y of zmd ag for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. european sales (stuttgart) phone +49.711.674517.55 fax +49.711.674517.87955 sequencer configurable error handler clock generation ov detection oc detection flash adc cpu core nvm ( otp ) 1 . 8 v reg digital 1 . 8 v reg analog vref vfbp vfbn v d d 5 0 avdd 18 vdd 18 adaptive digital controller pwm lse pwm vfb digital control loop isnsp isnsn current sensing hkadc int . temp sense temp bias current source vrefp 3 . 3 v reg a d c v r e f gpio g p i o 0 p g o o d c o n t r o l g p i o 1 g p i o 2 g p i o 3 dac dac current limiting average current sensing ot detection vin ov / uv detection config 0 config 1 vin vdd 33 vout uv detection
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 4 of 23 contents list of figures ................................ ................................ ................................ ................................ .......................... 5 list of tables ................................ ................................ ................................ ................................ ........................... 5 1 ic characteristics ................................ ................................ ................................ ................................ ............. 6 1.1. absolute maximum ratings ................................ ................................ ................................ ....................... 6 1.2. recommended operating conditions ................................ ................................ ................................ ....... 7 1.3. electrical parameters ................................ ................................ ................................ ................................ 7 2 product summary ................................ ................................ ................................ ................................ ........... 10 2.1. overview ................................ ................................ ................................ ................................ .................. 10 2.2. pin description ................................ ................................ ................................ ................................ ......... 12 2.3. typical application circuit ................................ ................................ ................................ ....................... 13 2.4. available packages ................................ ................................ ................................ ................................ . 14 3 functional description ................................ ................................ ................................ ................................ .... 14 3.1. power supply circuitry, reference decoupling, and grounding ................................ ............................ 14 3.2. reset/start - up behavior ................................ ................................ ................................ .......................... 15 3.3. digital power control ................................ ................................ ................................ ............................... 15 3.3.1. overview ................................ ................................ ................................ ................................ ........... 15 3.3.2. switching frequency ................................ ................................ ................................ ......................... 15 3.3.3. output voltage feedback ................................ ................................ ................................ ................. 15 3.3.4. digital compensator ................................ ................................ ................................ ......................... 15 3.3.5. power sequencing and the control pin ................................ ................................ ...................... 15 3.3.6. pre - biased start - up and soft stop ................................ ................................ ................................ .... 16 3.3.7. current sensing ................................ ................................ ................................ ................................ 17 3.3.8. temperature measurement ................................ ................................ ................................ .............. 17 3.4. fault monitoring and response generation ................................ ................................ ............................ 17 3.4.1. output over/under voltage ................................ ................................ ................................ .............. 18 3.4.2. output current protection ................................ ................................ ................................ ................. 18 3.4.3. over - temperature protection ................................ ................................ ................................ ........... 19 3.5. pin configuration ................................ ................................ ................................ ................................ ..... 19 3.6. configuration and engineering mode ................................ ................................ ................................ ...... 19 3.7. pin strap options ................................ ................................ ................................ ................................ .... 19 4 mechanical specifications ................................ ................................ ................................ .............................. 21 5 glossary ................................ ................................ ................................ ................................ ......................... 22 6 ordering information ................................ ................................ ................................ ................................ ...... 22 7 related documents ................................ ................................ ................................ ................................ ........ 23 8 document revision history ................................ ................................ ................................ ............................ 23
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 5 of 23 list of figures figure 2.1 typical application circuit with a 5 v supply voltage ................................ ................................ ...... 10 figure 2.2 block diagram ................................ ................................ ................................ ................................ ... 11 figure 2.3 typical applicatio n circuit with a 5v supply voltage and drmos ................................ ................... 13 figure 2.4 pin - out qfn24 package ................................ ................................ ................................ ................... 14 figure 3.1 power sequencing ................................ ................................ ................................ ............................ 16 figure 3.2 power sequencing with non - zero off voltage ................................ ................................ ................. 17 figure 4.1 24 - pin qfn package drawing ................................ ................................ ................................ .......... 21 list of tables table 3.1 supported switching frequencies ................................ ................................ ................................ .... 15 table 3.2 fault configuration overview ................................ ................................ ................................ ........... 18 table 3.3 pin configuration overview ................................ ................................ ................................ .............. 19 table 3.4 pin strap resistor values ................................ ................................ ................................ ................. 20
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 6 of 23 1 ic c haracteristics no te: the absolute maximum ratings are stress ratings only. the ZSPM1005 might not function or be operable above the recommended operating conditions. stresses exceeding the absolute maximum ratings might also damage the device. in addition, extended exposur e to stresses above the recommended operating conditions might affect device reliability. zmdi does not recommend designing to the absolute maximum ratings. 1.1. absolute maximum ratings parameter pins conditions min typ max units supply voltages 5 v supply voltage vdd50 dv/dt < 0.15v/ s - 0.3 5.5 v max imum slew rate 0.15 v/ s 3.3 v supply voltage vdd33 - 0.3 3.6 v 1.8 v supply voltage vdd18 avdd18 - 0.3 2.0 v digital pins digital i/o pins gpio x control pgood lse pwm - 0.3 5.5 v analog pins current sensing isnsp isnsn - 0.3 5.5 v voltage feedback vfbp vfbn - 0.3 2.0 v all other analog pin s adc v ref vrefp temp vin configx - 0.3 2.0 v ambient conditions s torage temperature - 40 150 c electrostatic d ischarge C human body model 1) +/ - 2k v electrostatic d ischarge C charge device model 1) +/ - 500 v 1) esd testing is performed according to the respective jesd22 jedec standard.
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 7 of 23 1.2. recommended operating conditions parameter symbol conditions min typ max units ambient conditions operation temperature t amb - 40 125 c thermal resistance junction to ambient ? ja 40 k/w 1.3. electrical parameters parameter symbol conditions min typ max units supply voltages 5 v supply voltage vdd50 pin v vdd50 4. 7 5 5 .0 5. 2 5 v 5 v supply current i vdd50 vdd50 =5.0 v 23 ma 3.3 v supply voltage v vdd33 supply for both the vdd33 and vdd50 pins if the internal 3.3v regulator is not used. 3.0 3.3 3.6 v 3.3 v supply current i vdd33 vdd50 = vdd33 =3.3 v 23 ma internally generated supply voltages 3.3 v supply volta ge vdd33 pin v vdd33 vdd50 =5.0 v 3.0 3.3 3.6 v 3.3 v output current i vdd33 vdd50 =5.0 v 2.0 ma 1.8 v supply voltages avdd18 and vdd18 pins v avdd18 v vdd18 vdd50 =5.0 v 1.72 1.80 1.98 v 1.8 v output current 0 ma power - on reset threshold for vdd33 pin C on v th_por_on 2 . 8 v power - on reset threshold for vdd33 pin C off v th_por_off 2. 6 v digital io pins (gpio x , control, pgood) input high voltage vdd33 =3.3 v 2.0 v input low voltage vdd33 =3.3 v 0.8 v output high voltage vdd33 =3.3 v 2.4 vdd33 v output low voltage 0. 5 v input leakage current 1 a output current - high 2.0 ma output current - low 2.0 ma
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 8 of 23 parameter symbol conditions min typ max units digital io pins with tri - state capability (lse, pwm) output high voltage vdd33=3.3 v 2.4 vdd33 v output low voltage 0.5 v output current - high 2.0 ma output current - low 2.0 ma tri - state leakage current 1.0 a output voltage (without external feedback divider ; see section 3.3.3 ) set - point voltage 0 1.4 v set - point resolution 1.4 mv set - point accuracy vout=1.4 v 1 % inductor current measurement common mode voltage across isnsp and isnsn pins 0 5.0 v differential voltage range across isnsp and isnsn pins 100 mv accuracy 5 % recommended dcr sense volt age for maximum output current 10 mv digital pulse width modulator switching frequency f sw 177 1000 khz resolution 163 ps frequency accuracy 2.0 % over - voltage protection reference dac set - point voltage 0 1.58 v resolution 25 mv set point accuracy 2 % comparator hysteresis 35 mv
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 9 of 23 parameter symbol conditions min typ max units housekeeping analog - to - digital converter (hkadc) input pins input voltage temp, vin, config0, and config1 pins 0 1.44 v source impedance vin sensing 3 k ? adc resolution 0.7 mv external temperature measurement (note: only pn - junction sense elements are supported) bias currents for external temperature sensing temp pin 60 a resolution temp pin 0.32 k accuracy of measurement temp pin 5.0 k internal temperature measurement resolution 0.22 k accuracy of measurement 5.0 k
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 10 of 23 2 product summary 2.1. overview the ZSPM1005 is a configurable true - digital single - phase pwm controller for high - current, non - isolated dc/dc supplies , supporting switching frequencies u p to 1 mhz. it offers a configurable digital power control loop incor - porating output voltage sensing, average inductor current sensing , and extensive fault monitoring and handling options. s everal different functional units are integrated in the device . a dedicated digital control loop is used to provide fast loop response and optimal output voltage regulation. this includes output voltage sensing, average inductor current sensing, a digital control law , and a digital pulse - width modulator (dpwm). in parallel, a dedicated, configurable error handler allows fast and flexible detection of error sign als and their appropriate handling . a housekeeping analog - to - digital converter (hkadc) ensures the reliable and efficient measurement of environmental signals , such as input voltage and temperature. an application - specific, low - ener gy integrated microcontroller is use d to control the overall system. i t manages configuration of the various logic unit s according to the preprogrammed configuration look - up tables and the external configuration resistors connected to the config0 and config1 pins . these pin - strapping resistors expedite configuration of output voltage, compensation, rise time, and additional parameters without requiring digital communication. zmdis pink power designer? graphical user interface (gui) allows the user to define the look - up tables and program additional parameters via the gpio2 and gpio3 pins. figure 2 . 1 typical application circuit with a 5 v supply voltage
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 11 of 23 a high - reliability, high - temperature one - time programmable memory (otp) is used to store configuration param - eters. all required bias and reference voltages are internally derived from the external supply voltage. figure 2 . 2 block d iagram
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 12 of 23 2.2. pin descriptio n pin name direction type description 1 agnd input supply analog ground 2 vrefp output supply reference terminal 3 vfbp input analog positive input of d ifferential feedback voltage sensing 4 vfbn input analog negative input of d ifferential feedback voltage sensing 5 isnsp input analog positive input of d ifferential current sensing 6 isnsn input analog negative input of d ifferential current sensing 7 temp input analog connection to e xternal temperature sensing element 8 vin input analog power supply input voltage sensing 9 config0 input analog configuration selection 0 10 config1 input analog configuration selection 1 11 pwm output digital h igh - side fet c ontrol s ignal 12 lse output digital low - side fet control s ignal 13 pgood output digital pgood output (i nternal pull - down) 14 control input digital control input 15 gpio 0 input /output digital general purpose input/output pin 16 gpio1 input/output digital general purpose input/output pin 17 gpio2 input/output digital general purpose input/output pin 18 gpio3 input/output digital general purpose input/output pin 19 gnd input supply digital ground 20 vdd18 output supply internal 1.8 v digital supply terminal 21 vdd33 input/output supply 3.3 v supply voltage terminal 22 vdd50 input supply 5.0 v supply voltage terminal 23 avdd18 output supply internal 1.8 v analog supply terminal 24 adcvref input analog analog - to - digital converter (adc) reference terminal pad pad input analog exposed p ad , digital ground
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 13 of 23 2.3. typical application circuit figure 2 . 3 typical application circuit with a 5 v s upply v oltage and drmos drmos + 5 v + vout pgnd vin c 1 , c 2 , c 3 c 4 , c 5 , c 6 r 1 r 2 , r 3 r 4 r 7 , c 8 r 9 r 8 r 5 r 6 c 7 zspm 1005 control pgood gpio 3 gpio 2 gpio 1 gpio 0 config 1 config 0 agnd adcvref vrefp avdd 18 vdd 18 vdd 50 vdd 33 gnd vin temp pwm lse isnsp isnsn vfbp vfbn
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 14 of 23 2.4. available packages the ZSPM1005 is available in a 24 - pin qfn package. the pin - out is shown in figure 2 . 4 . the mech a nical drawing of the package can be found in figure 4 . 1 . figure 2 . 4 pin - out qfn24 p ackage 3 functional description 3.1. power s upply c ircuitry , r eference d ecoupling , and g rounding the ZSPM1005 incorporate s several internal power regulators in order to derive all required supply and bias v oltage s from a single external supply v oltage . this supply v oltage can be either 5 v or 3.3 v depending on whether the internal 3.3 v regulator shou ld be used. if the internal 3.3 v regulator is not used, 3.3 v mu st be supplied to the 3.3v and 5 v supply pin s . decoupling capacitors are required at the vdd 33, vdd18, and avdd18 pins (1.0f minimum; 4.7 f recommended). if the 5.0 v supply voltage is used, i.e. , the internal 3.3 v regul ator is used, a small load current can be drawn from the vdd33 pin. this can be used to supply pull - up resistors , for example. the reference v oltage s required for the analog - to - digital converters are generated within the ZSPM1005 . e xternal decoupling must be provided betw een the vref p and adcvref pins . therefore, a 4 . 7 f capacitor is required at the vref p pin , and a 100 n f capacitor is required at the adcvref pin . the two pins should be connected with ap proximately 50 ? resistance in order to provide sufficient decoupling between the pins . three different ground connections are available on the outside of the package. these should be connected together to a single ground tie. a differentiation between analog and digital ground is not required. a d c v r e f a v d d 1 8 v d d 5 0 v d d 3 3 v d d 1 8 g n d pad 19 20 21 22 24 23 isnsp isnsn vfbp vfbn agnd 4 2 1 3 5 6 vrefp p w m l s e v i n t e m p c o n f i g 0 c o n f i g 1 7 8 12 10 9 11 control pgood gpio 1 gpio 2 gpio 3 13 14 15 16 18 17 gpio 0
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 15 of 23 3.2. reset/ s tart - up b ehavior the ZSPM1005 employs a n internal power - on - reset (por) circuit to ensure proper sta rt up and sh u t down with a changing supply voltage . o nce the supply voltage increases above the por threshold voltage (see section 1.3 ) , the ZSPM1005 begins the internal start - up process. upon its completion the device is ready for operation. 3.3. d igital power control 3.3.1. overview the digital power control loop consists of the integral parts required for the control functionality of the ZSPM1005 . a high - speed analog front - end is used to digitize the output volt age. a digital control core uses the acquired information to pr ovide duty - cycle information to the pwm that controls the drive signals to the power stage. 3.3.2. switching f requency the ZSPM1005 supports the switching frequencies listed in table 3 . 1 . table 3 . 1 supported s witching frequencies 1000 khz 400.0 khz 800 khz 333.3 khz 666.6 khz 285.7 khz 571.4 khz 266.6 khz 500.0 khz 222.0 khz 444.4 khz 177.0 khz 3.3.3. output voltage f eedback the v oltage feedback signal is sampled wit h a high - speed analog front - end. the feedback v oltage is differential ly measured and subtracted from the voltage reference provided by a reference digital - to - analog converter (dac) using an error amplifier. a flash adc is then used to convert the v oltage into its digital equivalent. this is followed by i nternal digital filtering to improve the systems noise rejection. although the reference dac gene rates a v oltage up to 1.44 v, keeping the v oltage on the feedback pin (vfbp) at approximately 1.20 v is recommended to guarantee sufficient headroom . if a larger output v oltage is required , a n external feedback divider is required . 3.3.4. digital compensator important: section 3.3.4 is proprietary and requires a non - disclosure agreement (nda) with zmdi. 3.3.5. power s equencing and the control p in the ZSPM1005 supports power - sequencing features such as programmable ramp up/down and delays. t he typical sequence of events is shown in figure 3 . 1 . the individual values for the delay, ramp time , and post ramp time can be configu red . note that the device is slew - rate controlled for ramping. hence, when pin - strapping options for the output voltage are used, the ramp time can change based on the configured slew - rate and the actual selected output voltage . the slew rate can be selected in the application using the pin - strap options explained in section 3.7 . the control pin can be configured for active low and active high operation.
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 16 of 23 the ZSPM1005 features a p ower g ood (pgood) output , which can be used to indicate the state of the power rail. if the output voltage level is a bove the power good value, the pin is set to active, indicating a stable output voltage on the rail. d ifferent levels for turn - on and turn - off are used to enable the use of a hysteresis if desire d . note that the configurable power good thresholds are store d in the device as factor s relative to the output voltage. hence, using the strapping options (section 3.7 ) to change the output voltage level also change s the pgood thresholds. figure 3 . 1 power s equencing 3.3.6. pre - biased s tart - up and so ft stop dedicated pre - biased start - up logic ensures proper start - up of the power converter when the output capacitor s are pre - charged to a non - zero output voltage . closed - loop stability is ensured during this phase. the ZSPM1005 also supports pre - biased off ; i.e. , the output voltage is not ramped down to zero and instead remains at a predefined level (v off_nom ). this value can be configured via the pink power designer? gui . after de - assert ion of the control pin, the ZSPM1005 ramps down the value to the predefined value. once the value is reached, pwm and lse will be turned off in order to put the output driver in to tri - state mode. t t on _ delay t on _ rise t on _ max t off _ delay t off _ fall 0 v v outnom t off _ max control pin control pin v pgood _ on v pgood _ off
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 17 of 23 figure 3 . 2 power s equencing with n on - zero o ff voltage 3.3.7. current s ensing important: section 3.3.7 is proprietary and requires a non - disclosure agreement (nda) with zmdi. 3.3.8. temperature measurement the ZSPM1005 features two independent temperature measurement units : internal and external . t he internal temperature sensing measures the temperatures inside the ZSPM1005 . t he external temperature sense element should be placed close to the inductor to measure its temperature. a pn - junction is used as the external temperature sense element . small - signal transistors, such the 3904, are widely used for this application. the pink power designer? gui must be used to enter the sensitivity and the offset for configuration of the external tem - perature measurement. a temperature calibration is highly recommended. 3.4. fault m onitoring and r esponse g eneration the ZSPM1005 monitors various signals during operation. depending o n the selected configuration, it can respond to events generate d by these signals. a wide range of options is configurable via the pin k power designer? gui . t ypical monitoring within the ZSPM1005 is a three - step process. first, an event is generate d by a configurable set of thresholds. this e vent is then digitally filtered before the ZSPM1005 react s with a configurable response . an overview of the fault configuration is given in table 3 . 2 . t t on _ delay t on _ rise t on _ max t off _ delay t off _ fall 0 v v onnom t off _ max v offnom tri - state
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 18 of 23 table 3 . 2 fault c onfiguration o verview si gnal response type delay resolution maximum delay output over - voltage fault low impedance * 500 s 90 ms output under - voltage fault low - impedance * 500 s 90 ms input over - voltage fault high - z* 500 s 90 ms input under - voltage fault high - z* 500 s 90 ms over - current fault low - impedance * 500 s 90 ms external over - temperature fault soft - off 5 ms 900 ms internal over - temperature fault soft - off 5 ms 900 ms * the d efault option s shown can be changed via the pink power designer ? gui . the ZSPM1005 supports different response types individually configurable for each fault. the low - impe dance response turns off the top mosfet and enables the low - side mosfet ; i.e., pwm=0 and lse=1 . after t off_max (see figure 3 . 2 ) , both mosfets will be turned off. a high - z response will disable both mosfets instantaneously. a soft - off response ramps the output voltage down , similar to a power - down operation via the co nt rol pin , to the value selected for v off_nom . after t off_max , , the controller will disable the power stage by turning both switches off. for each fault response , a delay and a retry setting can be configured. if the delay value is set to non - zero, the ZSPM1005 will not respond to a fault immediately. instead it will delay the response by the configured value and then reassess the signal. if the fault is still pres ent, the appropriate response will be triggered. if the fault is no longer present , the previous detection will be disregarded. the retry setting configures the number of restarts of the power converter after a fault event. this number can be between 0 and 7 , where a setting of 7 represents an infinite retry operation. in analog controllers, this feature is also known as hic c up mode. 3.4.1. output o ver / u nder voltage to prevent damage to the load, the ZSPM1005 utilizes an output over - v oltage protection circuit. t he v oltage at vfbp is continuously compared with a configurable threshold using a high - speed analog comparator. if the v oltage exceeds the configured threshold, the fault response is generated and the pwm outputs are turned off . the v oltage fault level is generate d by a 6 - bit dac with a reference v oltage of 1.60 v resulting in 25 mv resolution . t he ZSPM1005 also mo nitors the output v oltage with a lower threshold . if the output v oltage falls below the under - voltage fault level, a fault event is generat e d . note that the fault thresholds are stored in the ZSPM1005 as f actor s relative to the output voltage. hence, using the strapping options (section 3.7 ) to change the output voltage level, also change s the fault thresholds. 3.4.2. output c urrent p rotectio n the ZSPM1005 continuously monitors the average inductor current and utilizes this information to protect the power supply against excessive output current . a configurable maximum output current fault threshold can be used to shut down the ZSPM1005 .
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 19 of 23 3.4.3. over - t emperature p rotection the ZSPM1005 monitors internal and external temperature. for each, a fault level can be configured and an appropriate response can be e nabled. 3.5. pin configuration the zspm100 5 offers a flexible configuration scheme for its digital output pins. this enables using the lse (low - side fet control signal) and gpio 0 pin (general purpose input/output) with different functions depending on the appli cation requirements. the configuration options are listed in table 3 . 3 . table 3 . 3 pin configuration overview pin lse thermal s hutdown driver disable hardwire option lse active high high and low active high and low active gpio 0 high and low active high and low active in lse mode, the lse pin is used as an smod signal to actively modulate the low - side fet of the power stage. alternatively, it can be used as a control signal in order to enable/disable the driver. this signal is deasserted prior to the first switching on the pwm pin and asserted shortly after the last switching event. if the pin is not used in the application, a hardwire option can be used to set the pin to a defined level. while the gpio 0 pin supports the driver disable feature, it can also be used as a thermal shutdown input. if the pin is asserted by an external source, e.g., t he thermal shutdown flag of a drmos, the controller flags an external over - temperature fault and reacts accordingly. note that if the gpio pin is configured as the driver disable, the lse pin must be configured with the lse feature. 3.6. configuration and engin eering mode important: section 3.6 is proprietary and requires a non - disclosure agreement (nda) with zmdi. 3.7. pin strap options the ZSPM1005 support s multiple sets of configuration options that allow the user to employ two simple resistors t o select various options from user - configured look - up tables that are stored in the nonvolatile memory (nvm). the pink power designer? gui is used to define the tables and store them in nvm. for the end user, t he configuration is dramatically simplified by using the pin strap features to select the following parameters: ? output voltage ? compensation ? over - current protection threshold ? ramp - up t ime
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 20 of 23 the config0 and config1 pins are used to determine the index of the selected values using the resisto r values listed in table 3 . 4 . each pin is configured for either the e12 series of resistor values, which provides 15 options for index values, or for the e96 series, which provides 30 index values. a resistor variation of ~2% is taken into account for initial tolerance and temperature dependency. the values are read during the initialization phase and then use d to look up the selected values from the us er - configured look - up tables. the user can freely correlate the two configuration pins with the four parameters to choose the optimal configuration options for the desired application . a total of four compensation settings and 30 values for each of the other parameters are available. table 3 . 4 pin strap resistor values index resistor value using the e12 series resistor value using the e96 series 0 0 0 1 680 392 2 1.2 k 576 3 1.8 k 787 4 2.7 k 1.000 k 5 3.9 k 1.240 k 6 4.7 k 1.500 k 7 5.6 k 1.780 k 8 6.8 k 2.100 k 9 8.2 k 2.430 k 10 10 k 2.800 k 11 12 k 3.240 k 12* 15 k 3.740 k 13 18 k 4.220 k 14 22 k 4.750 k 15 n. a. 5.360 k 16 n. a. 6.040 k 17 n. a. 6.810 k 18 n. a. 7.680 k 19 n. a. 8.660 k 20 n. a. 9.530 k 21 n. a. 10.50 k 22 n. a. 11.80 k 23 n. a. 13.00 k 24 n. a. 14.30 k 25 n. a. 15.80 k 26 n. a. 17.40 k 27 n. a. 19.10 k 28 n. a. 21.00 k 29 n. a. 23.20 k
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 21 of 23 4 mechanical specifications based on jedec mo - 220. all dimensions are in m illimeters. figure 4 . 1 24 - pin qfn package drawing dimension m in (mm) m ax (mm) a 0.8 0.90 a 1 0.00 0.05 b 0.18 0.30 e 0.5 nom inal h d 3.90 4.1 h e 3.90 4.1 l 0.35 0.45
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 22 of 23 5 glossary term description asic application specific integrated circuit dpwm digital pulse - width modulator dcr dc resistance dsp digital signal processing fet field - effect transistor fpga field - programmable gate array gpio general purpose input/output gui graphical user interface hkadc housekeeping analog - to - digital converter nvm non - volatile memory ot over - temperature otp one - time programmable memory ov over - voltage pid proportional/integral/derivative scr sub - cycle response? slc state - law control? smod skip mode spm smart power management 6 ordering information product sales code description package ZSPM1005 z a 1r 0 ZSPM1005 lead - f ree qfn24 temperature range: - 40 c to + 12 5c reel
ZSPM1005 true digital pwm controller (single - phase, single - rail) brief data sheet june 21 , 2013 ? 2013 zentrum mikroelektronik dresden ag rev. 1.00 all rights reserved. the material contained herein may not be reproduced, adapted, merged, translated, stored, or used withou t the prior written consent of the copyright owner. the information furnished in thi s publication is subject to changes without notice. 23 of 23 7 related documents note: revx_xx refers to the current revision of the document. document file name ZSPM1005 feature sheet ZSPM1005_data_sheet_revx_xx. pdf pink power designer? graphic user interface (gui) for the ZSPM1005 pinkpowerdesigner_userman_ZSPM1005_rev_x_xy.pdf zspm10 xx application note programming and calibration zspm10 xx _calibration_procedures_revx_xx.pdf visit zmdis website www.zmdi.com or contact your nearest sales office for the latest version of these documents. 8 document revision history revision date description 1.00 june 2 1 , 2013 first release. sales and further information www.zmdi.com spm@zmdi.com zentrum mikroelektronik dresden ag global headquarters grenzstrasse 28 01109 dresden, germany central office: phone +49.351.8822.0 fax +49.351.8822.600 zmd america, inc. 1525 mccarthy blvd., #212 milpitas, ca 95035 - 7453 usa usa phone +855.275.9634 zentrum mikroelektronik dresden ag, japan o ffice 2nd floor, shinbashi tokyu bldg. 4 - 21 - 3, shinbashi, minato - ku tokyo, 105 - 0004 japan zmd far east, ltd. 3f, no. 51, sec. 2, keelung road 11052 taipei taiwan zentrum mikroelektronik dresden ag, korea office u - space 1 building 11th floor, unit ja - 1102 670 sampyeong - dong bundang - gu, seongnam - si gyeonggi - do, 463 - 400 korea phone +82.31.950.7679 fax +82.504.841.3026 phone +408.883.6310 fax +408.883.6358 phone +81.3.6895.7410 fax +81.3.6895.7301 phone +886.2.2377.8189 fax +886.2.2377.8199 european technical support phone +49.351.8822.7.772 fax +49.351.8822.87.772 disclaimer : this information applies to a product under development. its characteristics and specifications ar e s ubject to change without notice. zentrum mikroelek tronik dresden ag (zmd ag ) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. the information furnished hereby is believed to be true and accurate. however, under no circumstances shall zmd ag be liable to a ny customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of o r in any way related to the furnishing, performance, or use of this technical data. zmd ag hereby expressly disclaims any liabilit y of zmd ag to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liab ility of zmd ag for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. european sales (stuttgart) phone +49.711.674517.55 fax +49.711.674517.87955
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