ISL62882EVAL2Z 데이터 시트보기 (PDF) - Intersil

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ISL62882EVAL2Z

ISL62882EVAL2Z User Guide

Intersil 

Application Note 1461

DIP-Switch Descriptions

• S1: Set the control signals

- S1.1: Set the DPRSLPVR signal

- S1.2: Set the PSI# signal

• U2: Set the VID

Jumper Descriptions

• J1: Set the ISEN2 pin configuration. ISEN2 can be

connected to the power stage, tied to +5V, GND or left

floating. Connect ISEN2 to the power stage when the

ISL62882 is configured for 3- or 2-phase application. Tie

ISEN2 to 5V when the ISL62882 is configured for 1-phase

application.

• J2: Set the ISEN1 pin configuration. ISEN1 can be

connected to the power stage, tied to +5V, GND or left

floating. Connect ISEN1 to the power stage when the

ISL62882 is configured for 3-, 2-phase application. Leave

ISEN1 floating when the ISL62882 is configured for

1-phase application

• J16: If installed, the +5V rail supplies the +3.3V rail to the

auxiliary circuit on the board. DO NOT APPLY +3.3V TO

TP37/TP30 WHILE J16 IS INSTALLED! IT’LL SHORT

THE +5V AND THE +3.3V POWER SUPPLIES. When

measuring board efficiency, uninstall J16 and apply +3.3V

to TP/37/TP30.

Test-point Descriptions

• J7: Scope-probe socket for measuring PHASE1

• J8: Scope-probe socket for measuring PHASE2

• J9: Scope-probe socket for measuring PHASE3

• J10: Scope-probe socket for measuring VO

• J15: Scope-probe socket for measuring the current of the

on-board transient-load emulator

• TP1: Monitor the on-board 1.2V power supply

• TP2: +12V power supply return input.

• TP3: +12V power supply positive input.

• TP4: Monitor the COMP pin

• TP5: Monitor the VW pin.

• TP6: Monitor the FB pin.

• TP7: Monitor the DPRSLPVR pin.

• TP8: Monitor the VR_TT# pin.

• TP9: Monitor the PSI# pin.

• TP10: Monitor the ISEN3/FB2 pin.

• TP11: Monitor the ISEN2 pin.

• TP12: Input side of the compensator.

• TP13: Monitor the PGOOD pin.

• TP14: Monitor the VSEN pin.

• TP15: Monitor the ISEN1pin.

• TP16: Monitor the CLK_EN# pin.

• TP17: Monitor the VR_ON pin

• TP18: Monitor the RTN pin.

• TP19: Monitor the positive side of C82.

• TP20: Monitor the negative side of C82.

• TP21: Monitor the VID6 pin.

• TP22: Monitor the VID5 pin.

• TP23: Monitor the VID4 pin.

• TP24: Monitor the VID3 pin.

• TP25: Monitor the VID2 pin.

• TP26: Monitor the VID1 pin.

• TP27: Monitor the VID0 pin.

• TP28: Monitor the IMON pin.

• TP29: +5V power supply positive input.

• TP30: +5V power supply return input.

• TP31: VIN positive voltage sense

• TP32: VIN return voltage sense

• TP33: Monitor MOSFET Q3 gate signal

• TP34: Monitor MOSFET Q9 gate signal.

• TP35: Monitor the VCCSENSE pin of the CPU socket U4.

• TP36: Monitor the VSSSENSE pin of the CPU socket U4.

• TP37: +3.3V power supply positive input.

• TP38: Monitor the VTT1 rail of the CPU socket U4.

• TP39: Monitor the VTT2 rail of the CPU socket U4.

2

AN1461.1

July 13, 2009

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