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isolated, 5 kv, dc-to-dc converter data sheet adum6000 rev. d document feedback information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 ?2010C2013 analog devices, inc. all rights reserved. technical support www.analog.com features iso power integrated, isolated dc-to-dc converter regulated 5 v or 3.3 v output up to 400 mw output power 16-lead soic wide-body package (rw-16) 16-lead soic wide-body package with enhanced creepage (ri-16-2) high temperature operation: 105c maximum high common-mode transient immunity: >25 kv/s thermal overload protection safety and regulatory approvals ul recognition 5000 v rms for 1 minute per ul 1577 csa component acceptance notice #5a (pending) iec 60601-1: 250 v rms, 8 mm package (ri-16-2) iec 60950-1: 400 v rms, 8 mm package (ri-16-2) vde certificate of conformity (rw-16) (pending) iec 60747-5-2 (vde 0884 part 2):2003-01 v iorm = 846 v peak vde certificate of conformity (ri-16-2) din v vde v 0884-10 (vde v 0884-10):2006-12 v iorm = 846 v peak applications usb peripheral power rs-232/rs-422/rs-485 transceiver power industrial field bus power industrial plcs general description the adum6000 1 is an isolated dc-to-dc converter based on the analog devices, inc., i coupler? technology. the dc-to-dc converter in this device provides regulated, isolated power in several combi- nations of input and output voltages as listed in table 1. the analog devices chip scale transformer i coupler technology transfers isolated power in this dc-to-dc converter with up to 31% efficiency. the result is a small form factor, total isolation solution. higher output power levels are obtained by using the adum6000 to augment the power output of the adum5401 , adum5402, adum5403 , adum5404 , adum520x , and adum620x i couplers with iso power?. iso power uses high frequency switching elements to transfer power through its transformer. special care must be taken during printed circuit board (pcb) layout to meet emissions standards. see the an-0971 application note for board layout recommendations. table 1. power levels input voltage output voltage output power 5 v 5 v 400 mw 5 v 3.3 v 330 mw 3.3 v 3.3 v 132 mw functional block diagram v dd1 gnd 1 nc rc in rc out rc sel v dd1 oscillator gnd 1 v iso gnd iso nc v sel nc nc v iso gnd iso 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 adum6000 rectifier regulator 0 8624-001 figure 1. 1 protected by u.s. patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329; ot her patents pending.
adum6000 data sheet rev. d | page 2 of 16 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 general description ......................................................................... 1 functional block diagram .............................................................. 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 electrical characteristics5 v primary input supply/5 v secondary isolated supply .......................................................... 3 electrical characteristics3.3 v primary input supply/3.3 v secondary isolated supply .......................................................... 3 electrical characteristics5 v primary input supply/3.3 v secondary isolated supply .......................................................... 4 package characteristics ............................................................... 4 regulatory information ............................................................... 5 insulation and safety-related specifications ............................ 5 din v vde v 0884-10 (vde v 0884-10) and iec 60747-5-2 (vde 0884 part 2):2003-01 insulation characteristics ........... 6 recommended operating conditions .......................................7 absolute maximum ratings ............................................................8 esd caution...................................................................................8 pin configuration and function descriptions ..............................9 typical performance characteristics ........................................... 10 applications information .............................................................. 12 pcb layout ................................................................................. 12 start-up behavior....................................................................... 12 emi considerations ................................................................... 13 thermal analysis ....................................................................... 13 current limit and thermal overload protection ................. 13 power considerations ................................................................ 13 increasing available power ....................................................... 14 insulation lifetime ..................................................................... 15 outline dimensions ....................................................................... 16 ordering guide .......................................................................... 16 revision history 7/13rev. c to rev. d changed ri-16-1 package to ri-16-2 package (throughout) ... 1 changes to table 8 and figure 2 ..................................................... 6 updated outline dimensions ....................................................... 16 changes to ordering guide .......................................................... 16 5/12rev. b to rev. c created hyperlink for safety and regulatory approvals entry in features section ................................................................. 1 changes to ordering guide .......................................................... 16 9/11rev. a to rev. b change to features section ............................................................. 1 changes to table 6 ............................................................................ 5 9/11rev. 0 to rev. a changes to features and applications sections ........................... 1 changes to table 6 and table 7 ....................................................... 5 changes to din v vde v 0844-10 (vde v 0884-10) and iec 60747-5-2 (vde 0884 part 2):2003-01 insulation characteristics section ..................................................................... 6 changes to table 11 .......................................................................... 8 updated outline dimensions ....................................................... 16 changes to ordering guide .......................................................... 16 10/10revision 0: initial version
data sheet adum6000 rev. d | page 3 of 16 specifications electrical character istics 5 v primary input su pply/5 v secondary i solated supply 4.5 v v dd1 5.5 v, v sel = v iso ; each voltage is relative to its respective gr ound. m inimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. t ypical specifications are at t a = 25c, v dd1 = 5.0 v, v iso = 5.0 v, and v sel = v iso . table 2 . parameter symbol min typ max unit test conditions/comments dc - to - dc converter power supply setpoint v iso 4.7 5.0 5.4 v i iso = 0 ma line regulation v iso(line) 1 mv/v i iso = 4 0 ma, v dd1 = 4.5 v to 5.5 v load regulation v iso(load) 1 5 % i iso = 8 ma to 72 ma output ripp le v iso(rip) 75 mv p -p 20 mhz bandwidth, c bo = 0.1 f||10 f, i iso = 72 ma output noise v iso(n) 200 mv p -p c bo = 0.1 f||10 f, i iso = 72 ma switching frequency f osc 180 mhz pwm frequency f pwm 625 khz i dd1 supply current, full v iso load i dd1( max) 290 ma maximum output supply current i iso(max) 8 0 ma v iso > 4.5 v efficiency a t maximum output supply current 3 1 % i iso = 8 0 ma i dd1 supply current, no v iso load i dd1(q) 7 1 6 ma i iso = 0 ma undervoltage lockout, v dd1 and v iso suppl ies uvl o positive - going threshold v uv+ 2.7 v negative - going threshold v uv? 2.4 v hysteresis v uvh 0.3 v electrical character istics 3.3 v primary input supply/3.3 v seconda ry isolated supply 3.0 v v dd1 3.6 v, v sel = gnd iso ; each voltage is relative to its respective ground. m inimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. t ypical specifications are at t a = 25c, v dd1 = 3.3 v, v iso = 3.3 v, and v sel = gnd iso . table 3 . parameter symbol min typ max unit test conditions/comments dc - to - dc converter power supply setpoint v iso 3.0 3.3 3.6 v i iso = 0 ma line regulation v iso(line) 1 mv/v i iso = 2 0 ma, v dd1 = 3.0 v to 3.6 v load regulation v iso(load) 1 5 % i iso = 4 ma to 36 ma output ripple v iso(rip) 50 mv p -p 20 mhz bandwidth, c b o = 0.1 f||10 f, i iso = 36 ma output noise v iso(n) 130 mv p -p c bo = 0.1 f||10 f, i iso = 36 ma switching frequency f osc 180 mhz pwm frequency f pwm 625 khz i dd1 supply current, full v iso load i dd1(max) 175 ma maximum output supply current i iso(max) 4 0 ma v iso > 3.0 v efficiency a t maximum output supply current 3 1 % i iso = 4 0 ma i dd1 supply current, no v iso load i dd1(q) 5 13 ma i iso = 0 ma undervoltage lockout, v dd1 and v iso suppl ies uvlo positive - going threshold v uv+ 2.7 v negative - going threshold v uv? 2.4 v hysteresis v uvh 0.3 v
adum6000 data sheet rev. d | page 4 of 16 electrical character istics 5 v primary input su pply/3.3 v secondary isolated supply 4.5 v v dd1 5.5 v, v sel = gnd iso , each voltage is relative to its respective ground. m inimum/maximum specifications apply over t he entire recommended operating range, unless otherwise noted. t ypical specifications are at t a = 25c, v dd1 = 5.0 v, v iso = 3.3 v, and v sel = gnd iso . table 4 . parameter symbol min typ max unit test conditions /comments dc - to - dc co nverter power supply setpoint v iso 3.0 3.3 3.6 v i iso = 0 ma line regulation v iso (line) 1 mv/v i iso = 50 ma, v dd1 = 4.5 v to 5.5 v load regulation v iso (load) 1 5 % i iso = 10 ma to 9 0 ma output ripple v iso (rip) 50 mv p -p 20 mhz bandwidth, c bo = 0.1 f||10 f, i iso = 90 ma output noise v iso (n) 130 mv p -p c bo = 0.1 f||10 f, i iso = 90 ma switching frequency f osc 180 mhz pwm frequency f pwm 625 khz i dd1 supply current, full v iso load i dd1(max) 250 ma maximum output supply current i iso (max) 100 ma v iso > 3.0 v efficiency a t maximum output supply current 26 % i iso = 100 ma i dd1 supply current, no v iso load i dd1 (q) 4 12 ma i iso = 0 ma undervoltage lockout, v dd1 and v iso suppl ies uvlo positive - going threshold v uv+ 2.7 v negative - going threshold v uv? 2.4 v hysteresis v uvh 0.3 v package characterist ics table 5 . parameter symbol min typ max unit test conditions /comments resistance and capacitance resistance (input -to - output) 1 r i- o 10 12 ? capacitance (input -to - output) 1 c i- o 2.2 pf f = 1 mhz input capacitance 2 c i 4.0 pf ic junction - to - ambient thermal resistance ja 45 c/w thermocouple is located at the center of the package underside; test conducted on a 4 - layer board with thin traces 3 thermal shutdown thermal shutdown threshold ts sd 150 c t j rising thermal shutdown hysteresis ts sd - hys 20 c 1 this device is considered a 2 - terminal device; pin 1 through pin 8 are shorted together, and pin 9 through pin 16 are shorted together. 2 input capacitance is from any input data pin to g round. 3 refer to the thermal analysis section for thermal model definitions.
data sheet adum6000 rev. d | page 5 of 16 regulatory information the adum6000 is approved by the organizations listed in table 6. refer to table 11 and the insulation lifetime section for more information about the recommended maximum working voltages for specific cross-isolation waveforms and insulation levels. table 6. ul 1 csa vde 2 recognized under ul 1577 component recognition program approved under csa component acceptance notice #5a ri-16-2 package: certified according to din v vde v 0884-10 (vde v 0884-10):2006-12 3 reinforced insulation, 846 v peak single protection, 5000 v rms isolation voltage basic insulation per csa 60950-1-07 and iec 60950-1, 600 v rms (848 v peak) maximum working voltage rw-16 package (pending): certified according to iec 60747-5-2 (vde 0884 part 2):2003-01 basic insulation, 846 v peak rw-16 package: reinforced insulation per csa 60950-1-07 and iec 60950-1, 380 v rms (537 v peak) maximum working voltage reinforced insulation per iec 60601-1, 125 v rms (176 v peak) maximum working voltage ri-16-2 package (pending): reinforced insulation per csa 60950-1-07 and iec 60950-1, 400 v rms (565 v peak) maximum working voltage reinforced insulation per iec 60601-1, 250 v rms (353 v peak) maximum working voltage file e214100 file 205078 file 2471900-4880-0001 1 in accordance with ul 1577, each adum6000 is proof-tested by applying an insulation test voltage 6000 v rms for 1 sec (curre nt leakage detection limit = 15 a). 2 in accordance with iec 60747-5-2 (vde 0884 part 2):2003-01, each adum6000 is proof-test ed by applying an in sulation test volta ge 1590 v peak for 1 sec (partial discharge detection limit = 5 pc). the asterisk (*) marking br anded on the component designates iec 60747-5-2 (vde 0884 part 2) :2003-01 approval. 3 in accordance with din v vde v 0884-10, each adum6000 is proof-tested by applying an insulation te st voltage 1050 v peak for 1 sec (partial discharge detection limit = 5 pc). the asterisk (*) marking branded on the component designates din v vde v 0884-10 approval. insulation and safety-related specifications table 7. parameter symbol value unit test conditions/comments rated dielectric insulation voltage 5000 v rms 1-minute duration minimum external air gap (clearance) l(i01) 8.0 mm measured from input termin als to output terminals, shortest distance through air minimum external tracking (creepage) rw-16 package l(i02) 7.6 mm measured from input termin als to output terminals, shortest distance path along body minimum external tracking (creepage) ri-16-2 package l(i02) 8.3 min mm measured from input termin als to output terminals, shortest distance path along body minimum internal distance (internal clearanc e) 0.017 min mm distance through insulation tracking resistance (comparative tracking index) cti >175 v din iec 112/vde 0303, part 1 material group iiia material group (din vde 0110, 1/89, table 1)
adum6000 data sheet rev. d | page 6 of 16 din v vde v 0884 - 10 (vde v 0884 - 10) and iec 60747 - 5 - 2 (vde 0884 part 2): 2003- 01 i nsulat ion characteristic s this power module is suitable for reinforced electrical isolation only within the safety limit data. maintenance of the safet y data is ensured by protective circuits. the asterisk ( * ) marking branded on the component designates din v v de v 0884 - 10 (vde v 0884 - 10) or iec 60747 - 5 - 2 (vde 0884 part 2):2003 - 01 approval. table 8 . description conditions symbol characteristic unit installation classification per din vde 0110 for rated mains voltage 150 v rms i to iv for rated mains voltage 300 v rms i to iv for rated mains voltage 400 v rms i to iii climatic classification 40/105/21 pollution degree per din vde 0110, table 1 2 maximum working insulati on voltage v iorm 849 v peak input - to - output test voltage, method b1 v iorm 1.875 = v pd(m) , 100% production test, t ini = t m = 1 sec, partial discharge < 5 pc v pd(m) 1592 v peak input - to - output test voltage, method a v iorm 1.5 = v pd(m) , t ini = 60 sec, t m = 10 sec, partial discharge < 5 pc v pd(m) after environmental tests subgroup 1 1273 v peak after input and/or safety test subgroup 2 and subgroup 3 v iorm 1.2 = v pd(m) , t ini = 60 sec, t m = 10 sec, partial discharge < 5 pc v pd(m) 1018 v peak high est allowable overvoltage v iotm 6000 v peak surge isolation voltage v peak = 10 kv, 1.2 s rise time, 50 s, 50% fall time v iosm 6000 v peak safety - limiting values maximum val ue allowed in the event of a failure (see figure 2 ) maximum junction temperature t s 150 c total power dissipation @ 25c p s 2.78 w insulation resistance at t s v io = 500 v r s >10 9 ? thermal derating curve 0 0.5 1.0 1.5 2.0 2.5 3.0 0 50 100 150 200 ambient temperature (c) safe limiting power (w) 08624-002 figure 2 . thermal derat ing curve, dependence of safety - limiting values on case temperature, per din en 60747 - 5- 2
data sheet adum6000 rev. d | page 7 of 16 recommended operatin g conditions table 9 . parameter symbol min ma x unit test conditions/ comments temperature operating tempe rature t a ?40 +105 c operation at 105c requires reduction of the maximum load curren t, as specified in table 10 supply voltages each voltage is relative to i ts respective ground v dd 1 @ v sel = 0 v v dd 1 3.0 5.5 v v dd 1 @ v sel = v iso v dd 1 4.5 5.5 v
adum6000 data sheet rev. d | page 8 of 16 absolute maximum rat ings t a = 25c, unless otherwise noted. table 10. parameter rating storage temperature (t st ) ?55c to +150c ambien t operating temperature (t a ) ?40c to +105c supply voltages (v dd 1 , v iso ) 1 ?0.5 v to +7.0 v input voltage (rc in , rc sel ) 1, 2 ?0.5 v to v ddi + 0.5 v output voltage (rc o ut ) 1, 2 ?0.5 v to v ddo + 0.5 v average total output current (i iso ) 3 8 0 ma common - mode transients 4 ?100 kv/s to +100 kv/s 1 each voltage is relative to its respective ground. 2 v ddi and v ddo refer to the supply voltages on the input and output sides of a given channel, respectively. see the pcb layout section . 3 see figure 2 for maximum rated current values for various temperatures. 4 refers to common - mode transients across the i so lation barrier. common - mode transients exceeding the absolute maximum ratings may cause latch - up or perm a nent damage. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational se ction of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution table 11 . maximum continuous working voltage 1 parameter max unit app licable certification ac voltage, bipolar waveform 424 v peak all certifications, 50 - year operation ac voltage, unipolar waveform basic insulation 600 v peak reinforced insulation 565 v peak w orking voltage per iec 60950 - 1 dc voltage basic ins ulation 600 v peak reinforced insulation 565 v peak w orking voltage per iec 60950 - 1 1 refers to the continuous voltage magnitude imposed across the isolation barrier. see the insulation lifetime section for more information.
data sheet adum6000 rev. d | page 9 of 16 pin configuration an d function descripti ons v dd1 1 gnd 1 2 nc 3 rc in 4 v iso 16 gnd iso 15 nc 14 v sel 13 rc out 5 nc 12 rc sel 6 nc nc = no connect 11 v dd1 7 v iso 10 gnd 1 8 gnd iso 9 adum6000 top view (not to scale) 08624-003 figure 3 . pin configuration table 12 . pin function descriptions pin no. mnemonic description 1, 7 v dd1 primary supply voltage , 3.0 v to 5.5 v. pin 1 and pin 7 are internally connected to each other, and it is recommended that both pins be externally connected to a common power source. 2, 8 gnd 1 g round reference for the primary s ide of the c onverter. pin 2 and pin 8 are internally connected to each other, and it is recommended that both pins b e connected to a common ground. 3, 11, 12, 14 nc no internal connection. 4 rc in regulation control input. in slave power configuration ( rc sel low), this pin is connected to the rc out pin of a master iso power device, or it is tied low to d isable the converter. in master or standalone mode ( rc sel high) , this pin has no function. this pin is weakly pulled to the low state . in noisy environments, it should be tied low or tied to a pwm control source. this pin must not be tie d high if rc sel is low; this combination causes excessive voltage on the secondary side of the converter, damaging the adum6000 and possibly the devices that it powers. 5 rc out regulation control output. in master power configuration (rc sel high) , this pin is connected to the rc in pin of a slave iso power device to allow the adum6000 to regulate additional devices. 6 rc sel control input. sets either standalone /m aster mode ( rc sel high) or slave mode ( rc sel low). this pin is weakly pulled to the high state. in noisy environments, tie this pin either high or low. 9, 15 gnd iso ground reference for the secondary side of the converter. pin 9 and pin 15 are internally connected to each other, and it is recommended that both pins be connected to a common ground. 10, 16 v iso secondary supply voltage output for external loads . 3.3 v ( v sel low) or 5.0 v ( v sel high). the 5.0 v output functionality is not guaranteed for a 3. 3 v primary supply input. pin 10 and pin 16 are internally connected to each other, and it is recommended that both pins be externally connected . 13 v sel output voltage selection. when v sel = v iso , the v iso set point is 5.0 v. when v sel = gnd iso , the v iso set point is 3.3 v. this pin is weakly pulled to the high state . in noisy environments, tie this pin either high or low. in slave mode, this pin has no function. table 13 . truth table ( positive logic) rc sel input rc in input rc out output v sel input v dd1 input v iso output operation h x pwm 1 h 5.0 v 5.0 v master mode operation, self regulating. h x pwm 1 l 5.0 v 3.3 v master mode operation, self regulating. h x pwm 1 h 3. 3 v 5.0 v this configuration is not recommended due to poor efficiency . h x pwm 1 l 3.3 v 3.3 v master mode operation, self regulating. l rc out(ext) rc in x x 2 x slave mode, rc out(ext) supplied by a mast er iso power device . l l l x x 0 v low power mode, converter disabled. l h h x x x this combination of rc in and rc sel is prohibited. damage occurs on the secondary side of the converter due to excess output voltage at v iso . rc in must be low , or it must be connected to a pwm s ignal from a master iso power part. 1 pwm refers to the regulation control si gnal. this signal is derived from the secondary side regulator or from the rc in input, depending on the value of rc sel . 2 v dd1 must be common between all iso power devices being regulated by a master iso power part.
adum6000 data sheet rev. d | page 10 of 16 typical performance characteristics 08624-004 0 5 10 15 20 25 30 35 0 20 40 60 80 100 120 efficienc y (%) i iso current (ma) 5.0v input/5.0v output 5.0v input/3.3v output 3.3v input/3.3v output figure 4 . typical power supply efficiency in all supported power configuration s 120 100 80 60 40 20 0 0 50 100 150 200 250 300 i dd1 current (ma) i iso current (ma) 08624-005 5.0v input/5.0v output 5.0v input/3.3v output 3.3v input/3.3v output figure 5 . typical isolated output supply current vs. input current in all supported power configurations i iso current (ma) total power dissipation (mw) 08624-122 0 100 200 400 600 800 300 500 700 900 1000 0 20 40 60 80 100 120 5.0v input/5.0v output 5.0v input/3.3v output 3.3v input/3.3v output figure 6. typical total power dissipation vs. isolated output supply current in all supported power configuration s 0 0.5 1.0 1.5 2.0 3.0 2.5 3.5 0 0.5 1.0 1.5 2.0 3.0 2.5 3.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 input supply voltage (v) input current (a) power (w) power i dd1 08624-006 figure 7 . typical short - circuit input current and power vs. v dd1 supply voltage time (ms) 0 40 4.6 4.8 5.0 5.2 5.4 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 v iso (v) i iso (ma) 08624-007 10% load 90% load 10% load figure 8 . typical v iso transient load response, 5 v output, 10% to 90% load step time (ms) 0 40 60 3.1 3.3 3.5 3.7 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 v iso (v) i iso (ma) 08624-008 10% load 90% load 10% load figure 9 . typical v iso transient load response, 3. 3 v output, 10% to 90% load step
data sheet adum6000 rev. d | page 11 of 16 time (s) rc out (v) v iso (v) 5.02 5.00 4.98 4.96 4.94 4.92 4.90 5.0 2.5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 08624-009 figure 10. typical output voltage ripple at 90% load, v iso = 5 v time (s) rc out (v) v iso (v) 3.34 3.30 3.32 3.28 3.26 3.24 4 2 08624-010 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 figure 11. typical output voltage ripple at 90% load, v iso = 3.3 v 0 1 2 3 4 5 6 7 ?1.0 ?0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 v iso (v) time (ms) 90% load 10% load 08624-012 figure 12. typical output voltage start-up transient at 10% and 90% load, v iso = 5 v 0 1 2 3 4 5 ?1.0 ?0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 v iso (v) time (ms) 90% load 10% load 08624-013 figure 13. typical output voltage start-up transient at 10% and 90% load, v iso = 3.3 v
adum6000 data sheet rev. d | page 12 of 16 applications informa tion the dc - to - dc converter section of the adum6000 works on principles that are common to most switching power supplies. it ha s a secondary side controller architecture with isolated pulse - width modulation (pwm) feedback. v dd1 power is suppli ed to an oscillating circuit th at switches current into a chip scale air core transformer. power transferred to the secondary side is rectified and regulated to either 3.3 v or 5 v. the secondary (v iso ) side controller regulates the output by creating a pw m control signal that is sent to the primary (v dd1 ) side by a dedicated i coupler data channel. the pwm modulates the oscillator circuit to control the power being sent to the secondary side. feedback allows for significantly higher power and efficiency. th e adum6000 provides a regulation control output (rc out ) signal that can be connected to other iso power devices. this feature allows a single regulator to control multiple power mod - ules without contention. wh en auxiliary power modules are present, the v iso pins can be connected together to work as a single supply. because there is only one feedback control path, the supplies work together seamlessly. the adum6000 can be a source of regulation control (master mode) , and it can also be controlled by another iso power device (slave mode) . the adum6000 implements undervoltage lockout (uvlo) with hysteresis i n the v dd1 in put protection circuit ry . when the input voltage rises above the uvlo threshold, the dc - to - dc converter becomes active. the input voltage must be decreased below the turn - on threshold by the hysteresis value to disable the converter. this feature has many benefits in the power - up sequence of the converter . for example, uvlo ensures that the system supply rises to a minimum level before the adum6000 demands current. also, it prevents any voltage drop due to con verter current from turning the supply off and causing oscillation . pcb layout the adum6000 digital isolator is a 0.4 w iso power integrated dc - to - dc converter that requir es no external interface circuitry for the logic interfaces. power supply bypassing is required at the input and output supply pins (see figure 14 ). the power supply section of the adum6000 uses a 180 mhz oscillator f requency to pass power efficiently through its chip scale transformers. in addition, the normal operation of the data section of the i coupler introduces switching transients on the power supply pins. bypass capacitors are required for several operating fr equencies. noise suppression requires a low inductance, high frequency capacitor, whereas ripple suppression and proper regulation require a large value capacitor. these capacitors are most conve n iently connected between pin 1 and pin 2 for v dd1 , and bet we en pin 15 and pin 16 for v iso . to suppress noise and reduce ripple, a parallel combination of at least two capacitors is required. the recommended ca pacitor values are 0.1 f and 10 f. best practice recommends using a very low inductance ceramic capacitor, or its equivalent, for the smaller value. the total lead length between both ends of the capacitor and the input power supply pin should not exceed 10 mm. consider bypassi ng between pin 1 and pin 8 and between pin 9 and pin 16 unless both common ground pins are connected together close to the packag e. v dd1 gnd 1 nc rc in v iso gnd iso nc nc nc v se l rc out rc se l v dd1 v iso gnd 1 gnd iso 08624-011 figure 14 . recommended pcb layout in applications involving high common - mode transients, ensure that board coupling across the isol a tion barrier is minimized. fur thermore, design the board layout such that any coupling that does occur a f fects all pins equally on a given component side. failure to ensure this can cause voltage differentials between pins exceeding the absolute maximum ratings for the device as specified in table 10 , thereby leading to latch - up and/or permanent damage. the adum6000 is a po wer device that dissipates approximately 1 w of power when fully loaded. because it is not possible to apply a heat sink to an isolation device, the device primarily depends on heat dissipation into the pcb through the gnd pins. if the device is used at hi gh ambient temperatures, provide a thermal path from the gnd pins to the pcb ground plane. the board layout in figure 14 shows enlarged pads for pin 2 and pin 8 (gnd 1 ) and for pin 9 and pin 15 (gnd iso ) . implement multiple vias fro m the pad to the ground plane to significantly reduce the temperature inside the chip. the dimensions of the expanded pads are at the discretion of the designer and depend on the available board space. start - up behavior the adum6000 device do es not contain a soft start circuit. therefore, the start - up current and voltage behavior must be taken into account when designing with this device. when power is applied to v dd1 , the input switching circuit begins to ope rate and draw current when the uvlo minimum voltage is reached. the switching circuit drives the maximum available power to the output until it reaches the regulation voltage where pwm control begins. the amount of current and the time required to reach re gulation voltage depends on the load and the v dd1 slew rate.
data sheet adum6000 rev. d | page 13 of 16 with a f ast v dd1 slew rate ( 200 s or less ), the peak current draw s up to 100 ma/v of v dd1 . the input voltage goes high faster than the output can turn on , so the peak current is proportion al to the maximum input voltage. with a slow v dd1 slew rate (in the millisecond range), the input voltage is not changing quickly when v dd1 reaches the uvlo minimum voltage . the current surge is approximately 300 ma because v dd1 is nearly constant at the 2.7 v uvlo voltage . the behavior during startup is similar to when the device load is a short circuit ; these values are consistent with the short - circuit current shown in figure 7 . w hen starting the device for v iso = 5 v operation , d o not limit the current available to the v dd1 power pin to less than 300 ma. the adum6000 device may not be able to drive the output to the regulation point if a current - limiting device clamps the v dd1 voltage during startup. as a result , the adum6000 device can draw large amounts of current at low voltage for extended periods of time. the output voltage of the adum600 0 device exhibits v iso overshoot during startup. if this overshoot could potentially damage components attached to v iso , a voltage - limiting device such as a zener diode can be u s ed to clamp the voltage. typical behavior is shown in figure 12 and figure 13. emi considerations the dc - to - dc converter section of the adum6000 must operate at 180 mhz to allow efficient power transfer through the small transformers . this creates high frequency currents that can propagate in circuit board ground and power planes, causing edge emissions and dipole radiation between the primary and secondary ground planes. grounded enclosures are recommended for appli cations that use t hese devices. if grounded enclosures are not possible, follow good rf design practices in the layout of the pcb. see the an - 0971 application note f or board layout recommendations . thermal analysis the adum6000 consis ts of four internal silicon die attached to a split lead frame with two die attach paddles. for the purposes of thermal analysis, it is treated as a thermal unit with the highest junction temperature r eflected in the ja value from table 5 . the value of ja is based on measurements taken with the part mounted on a jedec standard 4 - layer board with fine width traces and still air. under normal operating conditions, the adum6000 operates at full load across the full temperature range without derating the output current. however, following the recommend ations in the pcb layout section decreases the thermal resistance to the pcb , allowing increased thermal margin at high ambient temperatures. current limit and th ermal overload protection the adum6000 is protected against damage due to excessive power dissipa tion by thermal overload protection circuits. thermal overload protection limits the junction temperature to a maximum of 150c (typical). under extre me conditions (that is, high am bient temperature and power dissipation), when the junction temperature sta rts to rise above 150c, the pwm is turned off, turning off the output current. when the junction tem per ature drops below 130c (typical), the pwm turns on again, restoring the output current to its nominal value. consider the case where a hard short from v iso to ground occurs. at first, the adum6000 reaches its maximum current, which is proportional to the voltage applied at v dd1 . power dissipates on the primary side of the converter (see figure 7 ). if self - heating of the junction becomes great enough to cause its temperature to rise above 150c, thermal shutdown is activate d , turning off the pwm and turning off the output current . as the junction temperature cools and drops below 13 0c, the pwm turns on and power dissipates again on the primary side of the converter, causing the junction temperature to rise to 150c again. this thermal oscillation between 130c and 150c causes the part to cycle on and off as long as the short remai ns at the output. thermal limit protections are intended to protect the device against accidental overload conditions. for reliable operation, externally limit device power dissipation to prevent junction temperatures from exceeding 130c. power considerat ions the adum6000 converter primary side is protected from pre - mature operation by undervoltage lockout (uvlo) circuitry. below the minimum operating voltage, the power converter holds its oscillator inactive . when the primary side oscillator begins to operate, it transfers power to the secondary power circuits. the secondary v iso voltage starts below its uvlo limit , making it inactive and unable to generate a regulation control signal. the primary side power oscillator is allowed to free run under this condition, supplying the maximum amount of power to the secondary side. as the sec ondary side voltage rises to its regulation setpoint, a large inrush current transient is present at v dd1 . when the regula - tion p oint is reached, the regulation control circuit produces the regulation control signal that modulates the oscillator on the primary side. the v dd1 current is then reduced and is propor - tional to the load current. the inrush current is less than the short - c ircuit current shown in figure 7 . the duration of the inrush current depends on the v iso loading conditions and on the current and voltage available at the v dd1 pin.
adum6000 data sheet rev. d | page 14 of 16 increasing available power the adum6000 device is designed to work in combination with other compatible iso power devices. the rc out , rc in , and rc sel pins allow the adum6000 to provide its pwm signal to another device thro ugh its rc out pin , acting as a master. it can also receive a pwm signal from another device through its rc in pin and act as a slave to that control signal. the rc sel pin chooses whether the part ac ts as a master or slave device. when the adum6000 acts as a slave, its power is regulated by the master device, allowing mul tiple iso power parts to be combined in parallel while sharing the load equally. when the adum60 00 is configured as a master or standalone device , it generates its own pwm feedback signal to regulate itself and any slave devices. the adum6000 can function as a master, slave, or standalone device. all d evices in the adum5xxx and adum6xxx family can function as standalone devices. some of these devices also function as master devices or slave devices, but not both (s ee table 14 ). table 15 illustrates how iso power devices can provide many combinations of data channel co unt and multiples of the single - unit power. table 14. function of iso pow er parts part no. function master slave standalone adum6000 yes yes yes adum620x no yes yes adum640x no no yes adum5000 yes yes yes adum520x no yes yes adum5400 no no yes adu m5401 to adum5404 yes no yes another feature that is allowed by the rc sel and rc in control architecture is the ability to completely shut down the oscillator in the dc - to - dc converter. this places the part in a low power standby mode and reduces the current draw to a fraction of a milliamp. when the adum6000 is placed in slave mode by driving rc sel low, the oscillator is controlled by rc in . if rc in is held low, the oscillator is shut down and the part is in low power standby mode . with no oscillator driving power to the secondar y side , v iso turns off. this mode is useful for applications where an isolated subsystem may be shut down to conserve power. to reactiva te the power module, drive rc sel high; the power supply resumes operation. table 15. configurations for power and data channels power units number of data channels 0 channels 2 channels 4 channels 1 - unit power adum6000 or adum5000 (standalone) adum620x or adum520x (standalone) adum5401 , adum5402 , adum5403 , adum54 04 , or adum640x (standalone) 2 - unit power adum6000 or adum5000 ( master ) adum6000 or adum5000 (slave) adum6000 or adum5000 ( master ) adum620x or adum520x ( slave ) adum5401 , adum5402 , adum5403 , adum5404 (master) adum6000 or adum5000 (slave) 3 - unit power adum6000 or adum5000 ( master ) adum6000 or adum5000 ( master ) adum6000 or adum5000 ( master ) adum6000 or adum5000 (slave) adum6000 or adum5000 (slave) adum620x or adum520x ( slave ) adum6000 or adum5000 (slave) adum620x or adum520x ( slave ) adum620x or adum520x ( slave )
data sheet adum6000 rev. d | page 15 of 16 insulation lifetime all insulation structures eventually break down when subjected to voltage stress over a sufficiently long period. the rate of insu - lation degradation is dependent on the characteristics of the voltage waveform applied across the insulation. in addition to the testing performed by the regulatory agencies, analog devices carries out an extensive set of evaluations to determine the life - time of the insulation structure within the adum6000 . analog devices performs accelerated life testing using voltage levels higher than the rated continuous working voltage . acce l- eration factors for several operating conditions are determined. these factors allo w calculation of the time to failure at the actual working voltage. the values shown in table 11 summarize the peak voltage for 50 years of service life for a bipolar ac operating condition and the maximum csa/vde approved working vol t - ages. in many cases, the approved working voltage is higher than the 50- year service life voltage. operation at these high working voltages can lead to shortened insulation life in some cases. the insulation lifetime of the adum6000 depends on the voltage waveform imposed across the isol a tion barrier. the i coupler insulation structure degrades at different rates de pend - ing on whether the waveform is bipolar ac, unipolar ac, or dc. figure 15, figure 16 , and figure 17 illustrate these different isolation voltage wav e forms. bipolar ac voltage is the most stringent environment. the goal of a 50 - year operating lifetime under the bipolar ac condition determines the maximum working voltage recommended by analog devices. in the case of unipolar ac or dc voltage, the stress on t he insu - la tion is significantly lower. this allows operation at higher working voltages while still a chieving a 50 - year service life. the working voltages listed in table 11 can be applied while maintaining the 50 - year minimum lifetime, provided th at th e voltage conforms to either the unipolar ac or dc volt age cases. a ny cross - insu lation voltage waveform that does not conform to figure 16 or figure 17 should be treated as a bipolar ac wave - form and its peak voltage limited to the 50 - year lifetime voltage value listed in table 11. the voltage presented in figure 16 is shown as sinusoidal for illustration purposes only. it is meant to represent any voltage waveform varying between 0 v and some limiting value. the lim iting value can be positive or negative, but the voltage cannot cross 0 v. 0v rated peak voltage 08624-021 figure 15 . bipolar ac waveform 0v rated peak voltage 08624-022 figure 16 . unipolar ac waveform 0v rated peak voltage 08624-023 figure 17 . dc waveform
adum6000 data sheet rev. d | page 16 of 16 outline dimensions controlling dimensions are in m illimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-013-aa 10.50 (0.4134) 10.10 (0.3976) 0.30 (0.0118) 0.10 (0.0039) 2.65 (0.1043) 2.35 (0.0925) 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 0 . 7 5 ( 0 . 0 2 9 5 ) 0 . 2 5 ( 0 . 0 0 9 8 ) 45 1.27 (0.0500) 0.40 (0.0157) c oplanarity 0.10 0.33 (0.0130) 0.20 (0.0079) 0.51 (0.0201) 0.31 (0.0122) seating plane 8 0 16 9 8 1 1.27 (0.0500) bsc 03-27-2007-b figure 18. 16-lead standard small outline package [soic_w] wide body (rw-16) dimensions shown in millimeters and (inches) 11-15-2011-a 16 9 8 1 seating plane coplanarity 0.1 1.27 bsc 12.85 12.75 12.65 7.60 7.50 7.40 2.64 2.54 2.44 1.01 0.76 0.51 0.30 0.20 0.10 10.51 10.31 10.11 0.46 0.36 2.44 2.24 pin 1 mark 1.93 ref 8 0 0.32 0.23 0.71 0.50 0.31 45 0.25 bsc gage plane compliant to jedec standards ms-013-ac figure 19. 16-lead standard small outline package, with increased creepage [soic_ic] wide body (ri-16-2) dimensions shown in millimeters ordering guide model 1 temperature range package description 2 package option adum6000arwz ?40c to +105c 16-lead soic_w rw-16 ADUM6000ARIZ ?40c to +105c 16-lead soic_ic ri-16-2 1 z = rohs compliant part. 2 tape and reel are available. the addi tional -rl suffix designat es a 13-inch (1,000 units) tape and reel option. ?2010C2013 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d08624-0-7/13(d)

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