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data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5vdc ?14vdc input; 0 .59vdc to 6vdc output;10a ou tput current * ul is a registered trademark of underwriters laboratories, inc. ? csa is a registered trademark of canadian standards association. ? vde is a trademark of verband deutscher elektrotechniker e.v. ** iso is a registered trademark of the international organization of standards document no: ds09-011 ver. 1.4 pdf name: NQR010A0X_ds.pdf features ? compliant to rohs eu directive 2002/95/ec (z versions) ? compatible in a pb-free or snpb wave-soldering environment (z versions) ? wide input voltage range (4.5vdc-14vdc) ? output voltage programmable from 0.59 vdc to 6vdc via external resistor ? tunable loop tm to optimize dynamic output voltage response ? fixed switching frequency ? output over current protection (non-latching) ? over temperature protection ? remote on/off ? small size: 10.4 mm x 16.5 mm x 8.4 mm (0.41 in x 0.65 in x 0.33 in) ? wide operating temperature range (-40c to 85c) ? ul * 60950-1recognized, csa ? c22.2 no. 60950-1- 03 certified, and vde ? 0805:2001-12 (en60950-1) licensed ? iso** 9001 and iso 14001 certified manufacturing facilities applications ? distributed power architectures ? intermediate bus voltage applications ? telecommunications equipment ? servers and storage applications ? networking equipment ? industrial applications description the NQR010A0X4 sip power modules are non-isolated dc-dc converters in an industry standard package that can deliver up to 10a of output current with a full load efficiency of 94% at 5vdc output voltage (v in = 12vdc). these modules operate over a wide range of input voltage (v in = 4.5vdc-14vdc) and provide a precisely regulated output voltage from 0.59vdc to 6vdc, programmable via an external resistor. features include remote on/off, adjustable output voltage, over current and over temperature protection. a new feature, the tunable loop tm , allows the user to optimize the dynamic response of the converter to match the load. rohs compliant
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 2 absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. parameter device symbol min max unit input voltage all v in -0.3 15 vdc continuous operating ambient temperature all t a -40 85 c (see thermal considerations section) storage temperature all t stg -55 125 c electrical specifications unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. parameter device symbol min typ max unit operating input voltage all v in 4.5 12 14 vdc maximum input current all i in,max 10 adc (v in =4.5v to 14v, i o =i o, max ) input no load current (v in = 12vdc, i o = 0, module on) v o,set = 0.6 vdc i in,no load 29 ma (v in = 12vdc, i o = 0, module on) v o,set = 5.0vdc i in,no load 58 ma input stand-by current all i in,stand-by 1.505 ma (v in = 12vdc, module disabled) inrush transient all i 2 t 1 a 2 s input reflected ripple current, peak-to-peak (5hz to 20mhz, 1 h source impedance; v in =0 to 14v , i o = i omax ; see test configurations) all 34 map-p input ripple rejection (120hz) all 58 db
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 3 electrical specifications (continued) parameter device symbol min typ max unit output voltage set-point (with 0.5% tolerance for external resistor used to set output voltage) all v o, set -1.5 +1.5 % v o, set output voltage all v o, set -3.0 ? +3.0 % v o, set (over all operating input voltage, resistive load, and temperature conditions until end of life) adjustment range all v o 0.59 6 vdc selected by an external resistor output regulation (for v o 2.5vdc) line (v in =v in, min to v in, max ) all -0.2 ? +0.2 % v o, set load (i o =i o, min to i o, max ) all ? 0.8 % v o, set output regulation (for v o <2.5vdc) line (v in =v in, min to v in, max ) all -5 ? +5 mv load (i o =i o, min to i o, max ) all ? 20 mv output ripple and noise on nominal output (v in =v in, nom and i o =i o, min to i o, max cout = 10 f) peak-to-peak (5hz to 20mhz bandwidth) v o = 0.59vdc 17 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 1.2vdc 22 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 1.8vdc 30 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 2.5vdc 34 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 3.3vdc 42 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 5.0vdc 50 mv pk-pk peak-to-peak (5hz to 20mhz bandwidth) v o = 6.0vdc 53 mv pk-pk external capacitance 1 without the tunable loop tm esr 1 m ? all c o, max 10 ? 200 f with the tunable loop tm esr 0.15 m ? all c o, max 10 ? 1000 f esr 10 m ? all c o, max 10 ? 5000 f output current all i o 0 10 adc output current limit inception (hiccup mode ) all i o, lim 200 % i o,max output short-circuit current all i o, s/c 0.65 arms (v o 250mv) ( hiccup mode ) efficiency (v in = 6vdc) v o,set = 0.59vdc 73 % v in = 12vdc, t a =25c v o, set = 1.2vdc 82 % i o =i o, max , v o = v o,set v o,set = 1.8vdc 87 % v o,set = 2.5vdc 90 % v o,set = 3.3vdc 92 % v o,set = 5.0vdc 94 % v o,set = 6.0vdc 95 % switching frequency all f sw ? 600 ? khz 1 external capacitors may require using the new tunable loop feature to ensure that the module is stable as well as getting the best transient response. see the tunable loop tm section for details.
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 4 electrical specifications (continued) parameter device symbol min typ max unit dynamic load response (dio/dt=10a/ s; v in = v in, nom ; v out = 1.8v, t a =25c) load change from io= 0% to 50% of io,max; co = 10 f peak deviation all v pk 280 mv settling time (vo<10% peak deviation) all t s 40 s load change from io= 50% to 0%of io,max: co = 10 f peak deviation all v pk 325 mv settling time (vo<10% peak deviation) all t s 40 s general specifications parameter min typ max unit calculated mtbf (v in =12v, v o =5vdc, i o =0.8i o, max , t a =40c) per telcordia method 6,925,356 hours weight ? 2.5 (0.088) ? g (oz.)
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 5 feature specifications unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. see feature descriptions for additional information. parameter device symbol min typ max unit on/off signal interface (v in =v in, min to v in, max ; open collector or equivalent signal referenced to gnd) logic high (on/off pin open - module on) input high current all i ih D 0.5 ma input high voltage all v ih 1.0 D v in, max v logic low (module off) input low current all i il D D 200 a input low voltage all v il -0.3 D 0.4 v turn-on delay and rise times (i o =i o, max , v in = v in, nom, v o to within 1% of steady state) case 1: on/off input is enabled and then input power is applied (delay from instant at which v in =v in, min until vo=10% of vo,set) all tdelay 3 msec case 2: input power is applied for at least one second and then on/off input is set enabled (delay from instant at which on/off is enabled until vo=10% of vo, set ) all tdelay 3 msec output voltage rise time (time for vo to rise from 10% of v o,set to 90% of vo, set) all trise 5 msec output voltage overshoot 1.5 % v o, set i o = i o, max ; v in = v in, min to v in, max , t a = 25 o c overtemperature protection all t ref 145 oc input undervoltage lockout turn-on threshold all 4.25 vdc turn-off threshold all 3.66 vdc
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 6 characteristic curves the following figures provide typical characteristics for the nqr010 module at 0.6vout and at 25oc. efficiency, (%) 50 55 60 65 70 75 80 85 0246810 vin = 4.5v vin = 9v vin = 6v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 1. converter efficiency versus output current. figure 2. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 3. typical output ripple and noise (v in = 9v, i o = i o,max ). figure 4. transient response to dynamic load change from 0% to 50% to 0% with v in =9v. output voltage on/off voltage v o (v) (200mv/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (200mv/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 5. typical start-up using on/off voltage (i o = i o,max ). figure 6. typical start-up using input voltage (v in = 9v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 7 characteristic curves (continued) the following figures provide typical characteristics for the nqr010 module at 1.2vout and at 25oc. efficiency, (%) 70 75 80 85 90 0246810 vin = 4.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 7. converter efficiency versus output current. figure 8. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 9. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 10. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. output voltage on/off voltage v o (v) (500mv/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (500mv/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 11. typical start-up using on/off voltage (i o = i o,max ). figure 12. typical start-up using input voltage (v in = 12v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 8 characteristic curves (continued) the following figures provide typical characteristics for the nqr010 module at 1.8vout and at 25oc. efficiency, (%) 70 75 80 85 90 95 0246810 vin = 4.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 13. converter efficiency versus output current. figure 14. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 15. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 16. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. voltage v o (v) (500mv/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (500mv/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 17. typical start-up using on/off voltage (i o = i o,max ). figure 18. typical start-up using input voltage (v in = 12v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 9 characteristic curves (continued) the following figures provide typical characteristics for the nqr010 module at 2.5vout and at 25oc. efficiency, (%) 70 75 80 85 90 95 100 0246810 vin = 4.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 19. converter efficiency versus output current. figure 20. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 21. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 22. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. output voltage on/off voltage v o (v) (1v/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (1v/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 23. typical start-up using on/off voltage (i o = i o,max ). figure 24. typical start-up using input voltage (v in = 12v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 10 characteristic curves (continued) the following figures provide typical characteristics for the nqr010 module at 3.3vout and at 25oc. efficiency, (%) 70 75 80 85 90 95 100 0246810 vin = 4.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 25. converter efficiency versus output current. figure 26. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 27. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 28. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. voltage v o (v) (1v/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (1v/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 29. typical start-up using on/off voltage (i o = i o,max ). figure 30. typical start-up using input voltage (v in = 12v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 11 characteristic curves (continued) the following figures provide typical characteristics for the nqr010 module at 5vout and at 25oc. efficiency, (%) 70 75 80 85 90 95 100 0246810 vin = 6.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 31. converter efficiency versus output current. figure 32. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 33. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 34. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. output voltage on/off voltage v o (v) (2v/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (2v/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 35. typical start-up using on/off voltage (i o = i o,max ). figure 36. typical start-up using input voltage (v in = 12v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6v dc output; 10a output current lineage power 12 characteristic curves the following figures provide typical characteristics for the nqr010 module at 6vout and at 25oc. efficiency, (%) 70 75 80 85 90 95 100 0246810 vin = 7.5v vin = 14v vin = 12v output current, io (a) 3 4 5 6 7 8 9 10 11 25 35 45 55 65 75 85 2m/s ( 400lfm ) nc 1.5m/s (300lfm) 1m/s (200lfm) 0.5m/s (100lfm) output current, i o (a) ambient temperature, t a o c figure 37. converter efficiency versus output current. figure 38. derating output current versus ambient temperature and airflow. output voltage v o (v) (20mv/div) output current , output voltage i o (a) (5adiv) v o (v) (500mv/div) time, t (1 s/div) time, t (100 s /div) figure 39. typical output ripple and noise (v in = 12v, i o = i o,max ). figure 40. transient response to dynamic load change from 0% to 50% to 0% with v in =12v. output voltage on/off voltage v o (v) (2v/div) v on/off (v) (5v/div) output voltage input voltage v o (v) (2v/div) v in (v) (5v/div) time, t (1ms/div) time, t (1ms/div) figure 41. typical start-up using on/off voltage (i o = i o,max ). figure 42. typical start-up using input voltage (v in = 9v, i o = i o,max ).
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 13 test configurations to oscilloscope current probe l test 1 h battery c s 1000 f electrolytic e.s.r.<0.1 @ 20c 100khz 2x100 f tantalum v in (+) com note: measure input reflected ripple current with a simulated source inductance (l test ) of 1 h. capacitor c s offsets possible battery impedance. measure current as shown above. c in figure 43. input reflected ripple current test setup. note: all voltage measurements to be taken at the module terminals, as shown above. if sockets are used then kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. v o (+) com 1uf . resistive load scope copper strip ground plane 10uf figure 44. output ripple and noise test setup. v o com v in (+) com r load r contact r distribution r contact r distribution r contact r contact r distribution r distribution v in v o note: all voltage measurements to be taken at the module terminals, as shown above. if sockets are used then kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. figure 45. output voltage and efficiency test setup. = v o . i o v in . i in x 100 % efficiency design considerations input filtering the NQR010A0X4 10a module should be connected to a low ac-impedance source. a highly inductive source can affect the stability of the module. an input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. to minimize input voltage ripple, low-esr ceramic or polymer capacitors are recommended at the input of the module. figure 46 shows the input ripple voltage for various output voltages at 10a of load current with 1x22 f or 2x22 f ceramic capacitors and an input of 12v. input ripple voltage (mvp-p) 0 50 100 150 200 250 300 0.511.522.533.544.55 1x22uf 2x22uf output voltage (vdc) figure 46. input ripple voltage for various output voltages with 1x22 f or 2x22 f ceramic capacitors at the input (10a load). input voltage is 12v. output filtering the NQR010A0X4 10a modules are designed for low output ripple voltage and will meet the maximum output ripple specification with no external capacitors. however, additional output filtering may be required by the system designer for a number of reasons. first, there may be a need to further reduce the output ripple and noise of the module. second, the dynamic response characteristics may need to be customized to a particular load step change. to reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. low esr ceramic and polymer are recommended to improve the dynamic response of the module. figure 47 provides output ripple information for different external capacitance values at various vo and for a load current of 10a. for stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. optimal
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 14 performance of the module can be achieved by using the tunable loop tm feature described later in this data sheet. 0 10 20 30 40 50 60 0.511.522.533.544.55 output voltage (volts) ripple (mvp-p) 1x10uf external cap 1x47uf external cap 2x47uf external cap 4x47uf external cap figure 47. output ripple voltage for various output voltages with external 1x10 f, 1x47 f, 2x47 f or 4x47 f ceramic capacitors at the output (10a load). input voltage is 12v. safety considerations for safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., ul 60950-1 2nd edition, csa c22.2 no. 60950-1- 07, and vde 0805-1+a11:2009-11 (din en60950-1 2nd edition) licensed. for the converter output to be considered meeting the requirements of safety extra-low voltage (selv), the input must meet selv requirements. the power module has extra-low voltage (elv) outputs when all inputs are elv. a 15a quick acting input fuse for the module is required . feature descriptions remote on/off the NQR010A0X4 10a power modules feature an on/off pin with positive logic for remote on/off operation. if the on/off pin is not being used, leave the pin open (the module will be on). the on/off signal (v on/off ) is referenced to ground. during a logic high on the on/off pin, the module remains on. during logic- low, the module is turned off. on/off vin gnd module enable r1 100k 2.2k 47k 2.2k 47k 10k 30.1k figure 48. remote on/off implementation. overcurrent protection to provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. at the point of current-limit inception, the unit enters hiccup mode. the unit operates normally once the output current is brought back into its specified range. the average output current during hiccup is 10% i o, max . overtemperature protection to provide protection in a fault condition, these modules are equipped with a thermal shutdown circuit. the unit will shut down if the overtemperature threshold of 130oc is exceeded at the thermal reference point t ref . the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. input undervoltage lockout at input voltages below the input undervoltage lockout limit, the module operation is disabled. the module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold.
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 15 feature descriptions (continued) output voltage programming the output voltage of the NQR010A0X4 10a module can be programmed to any voltage from 0.59dc to 6vdc by connecting a resistor between the trim+ and gnd pins of the module. certain restrictions apply on the output voltage set point depending on the input voltage. these are shown in the output voltage vs. input voltage set point area plot in fig. 49. the upper limit curve shows that for output voltages of 0.9v and lower, the input voltage must be lower than the maximum of 14v. the lower limit curve shows that for output voltages of 3.3v and higher, the input voltage needs to be larger than the minimum of 4.5v. 0 2 4 6 8 10 12 14 16 0.511.522.533.544.555.56 output voltage (v) input voltage (v) figure 49. output voltage vs. input voltage set point area plot showing limits where the output voltage can be set for different input voltages. without an external resistor between trim+ and gnd pins, the output of the module will be 0.59vdc. to calculate the value of the trim resistor, rtrim for a desired output voltage, use the following equation: () ? = k vo rtrim 591 . 0 182 . 1 rtrim is the external resistor in k ? vo is the desired output voltage table 1 provides rtrim values required for some common output voltages. table 1 v o, set (v) rtrim ( k ? ) 0.59 open 1.0 2.89 1.2 1.941 1.5 1.3 1.8 0.978 2.5 0.619 3.3 0.436 5.0 0.268 6.0 0.219 by using a 0.5% tolerance trim resistor with a tc of 25ppm, a set point tolerance of 1.5% can be achieved as specified in the electrical specification. the pol programming tool available at www.lineagepower.com under the design tools section, helps determine the required trim resistor needed for a specific output voltage. v o (+) trim gnd r trim load v in (+) on/off vout figure 50. circuit conf iguration for programming output voltage using an external resistor. voltage margining output voltage margining can be implemented in the NQR010A0X4 10a modules by connecting a resistor, r margin-up , from the trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, r margin-down , from the trim pin to output pin for margining-down. figure 51 shows the circuit configuration for output voltage margining. the pol programming tool, available at www.lineagepower.com under the design tools section, also calculates the values of r margin-up and r margin-down for a specific output voltage and % margin. please consult your local lineage power field application engineer or account manager for additional details.
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 16 feature descriptions (continued) vo module gnd trim q1 rtrim rmargin-up q2 rmargin-down figure 51. circuit configuration for margining output voltage. monotonic start-up and shutdown the NQR010A0X4 10a modules have monotonic start- up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. tunable loop tm the NQR010A0X4 10a modules have a new feature that optimizes transient response of the module called tunable loop tm . external capacitors are usually added to improve output voltage transient response due to load current changes. sensitive loads may also require additional output capacitance to reduce output ripple and noise. adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. larger values of external capacitance could also cause the module to become unstable. to use the additional external capacitors in an optimal manner, the tunable loop tm feature allows the loop to be tuned externally by connecting a series r-c between the vout and trim pins of the module, as shown in fig. 52. this r-c allows the user to externally adjust the voltage loop feedback compensation of the module to match the filter network connected to the output of the module. recommended values of r tune and c tune are given in tables 2 and 3. table 2 lists recommended values of r tune and c tune in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 5a to 10a step change (50% of full load), with an input voltage of 12v. table 3 shows the recommended values of r tune and c tune for different values of ceramic output capacitors up to 1000uf, again for an input voltage of 12v. the value of r tune should never be lower than the values shown in tables 2 and 3. please contact your lineage power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external r-c to tune the module for best transient performance and stable operation for other output capacitance values. module trim vout gnd rtune ctune rtrim figure. 52. circuit diagram showing connection of r tume and c tune to tune the control loop of the module. table 2. recommended values of r tune and c tune to obtain transient deviation of 2% of vout for a 5a step load with vin=12v. vout 5v 3.3v 2.5v 1.8v 1.2v 0.6v cext 4x47 f 330 f polymer 330 f polymer 2x330 f polymer 3x330 f polymer 9x330 f polymer r tune 47 47 47 47 47 30 c tune 39nf 100nf 100nf 220nf 220nf 330nf v 76mv 39mv 39mv 25mv 22mv 12mv table 3. general recommended values of of r tune and c tune for vin=12v and various external ceramic capacitor combinations. cext 1x47 f 2x47 f 4x47 f 6x47 f 10x47 f 20x47 f r tune 100 75 47 47 47 47 c tune 12nf 22nf 39nf 56n 68nf 100nf
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 17 thermal considerations power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation. considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. a reduction in the operating temperature of the module will result in an increase in reliability. the thermal data presented here is based on physical measurements taken in a wind tunnel. the test set-up is shown in figure 53. the preferred airflow direction for the module is in figure 54. figure 53. thermal test set-up. the thermal reference point, t ref used in the specifications of thermal derating curves is shown in figure 54. for reliable operation this temperature should not exceed 125 o c. the output power of the module should not exceed the rated power of the module (vo,set x io,max). please refer to the application note ?thermal characterization process for open-frame board- mounted power modules? for a detailed discussion of thermal aspects including maximum device temperatures. figure 54. t ref temperature measurement location. post solder cleaning and drying considerations post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. the result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. for guidance on appropriate soldering, cleaning and drying procedures, refer to board mounted power modules: soldering and cleaning application note. through-hole lead-free soldering information these rohs-compliant through-hole products use the sac (sn/ag/cu) pb-free solder and rohs-compliant components. they are designed to be processed through single or dual wave soldering machines. the pins have an rohs-compliant finish that is compatible with both pb and pb-free wave soldering processes. a maximum preheat rate of 3 c/s is suggested. the wave preheat process should be such that the temperature of the power module board is kept below 210 c. for pb solder, the recommended pot temperature is 260 c, while the pb-free solder pot is 270 c max. not all rohs-compliant through-hole products can be processed with paste-through-hole pb or pb-free reflow process. if additional information is needed, please consult with your lineage power representative for more details. air flow power module wind tunnel pwbs 7.24 [0.285] 76.2 [3.0] probe location for measuring airflow and ambient tem p erature 50.8 [2.00]
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 18 mechanical outline dimensions are in millimeters and (inches). tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.) pin out pin function 1 on/off 2 v in 3 gnd 4 v out 5 trim+ rear view side view
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 19 recommended pad layout dimensions are in millimeters and (inches). tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.)
data sheet january 14, 2011 NQR010A0X4: non-isolated dc-dc power modules 4.5 ? 14vdc input; 0.59vdc to 6vdc output; 10a output current lineage power 20 document no: ds009-011 ver. 1.4 pdf name: NQR010A0X_ds.pdf ordering information please contact your lineage power sales representative for pricing, availability and optional features. table 4. device codes device code input voltage range output voltage output current on/off logic connector type comcodes NQR010A0X4z 4.5 ? 14vdc 0.59 ? 6vdc 10a positive sip cc109153012 z refers to rohs-compliant versions world wide headquarters lineage power corporation 601 shiloh road, plano, tx 75074, usa +1-888-lineage(546-3243) (outside u.s.a.: +1-972-244-watt(9288) ) www.lineagepower.com e-mail: techsupport1@lineagepower.com asia-pacific headquarters tel: +86.021.54279977*808 europe, middle-east and africa headquarters tel: +49.89.878067-280 india headquarters tel: +91.80.28411633 lineage power reserves the right to make changes to the product(s) or information contained herein without notice. no liability is assumed as a result of their use or a pplication. no rights under any patent accompany the sale of any such product(s) or information. lineage power dc-dc products are protected under various patents. information on these patents is available at www.lineagepower.com/patents . ? 2010 lineage power corporation, (plano, texas) all international rights reserved.

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