International Rectifier IRDC38063-P1V2 User Manual Download Page 5

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IRDC38063-P1V2

3/21/2017

Schematic for Transient Load set up

Vout

S3 should be in position

1-2 to enable transient load

R50

20m

C75
N/S

C71
N/S

C70
N/S

C76
N/S

C68
10u

R42

0.2

R43

0.2

R44

0.2

R46

0.2

R47

1.5K

ExtLoadCtrl

IRF6721

MIC4452/SO8

GND

OUT1

OUT2

N/A

R45

N/S

R49
10K

S1
SW

C69
0.1uF

C78
0.1uF

R48
10K

Vout

C79
100p

C77
N/S

Vo_R_P

Vo_R_N

VCC

I-Monitor

C72
N/S

C73
N/S

C74
N/S

KC1

KC2

Vout

Summary of Contents for IRDC38063-P1V2

Page 1: ...rward external frequency synchronization with smooth clocking internal LDO true differential remote sensing and pre bias start up A temperature and bias compensated output over current protection func...

Page 2: ...mmunication is established through the 4 pin header which allows connection to the SCL SDA SALERT and GND lines from the host dongle For proper operation in digital communications mode R35 must always...

Page 3: ...IRDC38063 P1V2 3 21 2017 3 CONNECTION DIAGRAM Top View Bottom View Vout PVin PGood Enable I2C PMBus Communication...

Page 4: ...N S C40 N S C39 N S R22 0 ohm R29 and R30 are unpopulated because our USB I2C converter dongle has on board pullups R26 0 ohm PGND 1 C32 22uF C29 22uF C31 22uF C30 22uF C37 N S C10 0 1uF C1 330uF PVi...

Page 5: ...50 20m C75 N S C71 N S C70 N S C76 N S C68 10u R42 0 2 R43 0 2 R44 0 2 R46 0 2 R47 1 5K ExtLoadCtrl 1 M1 IRF6721 U2 MIC4452 SO8 VS 1 IN 2 GND 4 GND 5 OUT1 6 OUT2 7 VS 8 N A 3 R45 N S R49 10K S1 SW 2 1...

Page 6: ...1 C41 2 2uF 0603 10V X5R TDK C1608X5R1A225M080AC 14 1 C68 10uF 0805 10V X5R TDK C2012X5R1A106M125AB 15 1 C80 10uF 0603 10V X5R 20 Murata GRM188R61A106ME69D 16 1 R19 7 5k 0603 1 10W 1 Rohm MCR03EZPFX7...

Page 7: ...d Ch1 PVin Ch2 Vout Ch3 PGood Ch4 Enable Fig 6 Inductor node at 25A load Ch3 SW node Fig 3 PVin Start up at 25A Load Ch1 PVin Ch2 Vout Ch3 PGood Ch4 Vcc Fig 2 PVin Start up at 25A Load Ch1 PVin Ch2 Vo...

Page 8: ...g 9 Short circuit recovery Hiccup at 25A load Ch2 Vout Ch3 PGood Fig 8 0 35V Prebias voltage startup at 0A load Ch2 Vout Ch3 PGood TYPICAL OPERATING WAVEFORMS PVin 12 0V Vout 1 2V Iout 0A 25A Fs 600kH...

Page 9: ...0 Transient Response 2 5A to 10A step 2 5A us Ch1 Vout Ch4 Iout Fig 11 Transient Response 17 5A to 25A step 2 5A us Ch1 Vout Ch4 Iout TYPICAL OPERATING WAVEFORMS PVin 12 0V Vout 1 2V Iout 0A 25A Fs 60...

Page 10: ...n 50 8o Gain Margin 11 3dB TYPICAL OPERATING WAVEFORMS PVin 12 0V Vout 1 2V Iout 0A 25A Fs 600kHz Room Temperature no airflow 1 2 60 40 20 0 20 40 60 200 150 100 50 0 50 100 150 200 103 104 105 TR1 dB...

Page 11: ...RDC38063 P1V2 3 21 2017 11 Fig15 Power loss versus load current Fig 14 Efficiency versus load current TYPICAL OPERATING WAVEFORMS PVin 12 0V Vout 1 2V Iout 0A 25A Fs 600kHz Room Temperature no airflow...

Page 12: ...DC38063 P1V2 3 21 2017 12 Fig 16 Thermal Image of the board at 25A load IR38063 72 9oC inductor 58 4oC Ambient 26 5oC THERMAL IMAGE PVin 12 0V Vout 1 2V Iout 0A 25A Fs 600kHz Room Temperature no airfl...

Page 13: ...IRDC38063 P1V2 3 21 2017 13 Fig 17 PMBus Command Summary PMBus Command Summary PVin 12 0V Vout 1 2V Iout 0A 25A Fs 600kHz...

Page 14: ...Center GUI Connecting devices 14 Start PowIRCenter Connect USB Dongle Step 1 Step 2 Detect attached demoboards USB Dongle connected USB Dongle NOT detected Press Auto Populate Devices button to detect...

Page 15: ...ess save load configuration files menu Access Board View Click Total Pout to return to the Board View Access PMBus commands Click channel to access PMBus commands for selected channel Access Config Fi...

Page 16: ...command 1 Ensure the channel enable is set high on board 2 Click On or Immediate Off to turn on or off the channel 3 Click Write button to send the command PMBus Command Screen Select command from pul...

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