ISL8270MEVAL1Z datasheet(14/56 Pages) RENESAS

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ISL8270M

FN8635 Rev.4.00

Page 14 of 56

Aug 17, 2017

Typical Application Circuit

FIGURE 26. TYPICAL SINGLE-PHASE APPLICATION CIRCUIT FOR 1.2V/25A OUTPUT

NOTES:

13. R4 and R5 are not required if the PMBus host already has I2C pull-up resistors.

14. Only one R3 per DDC bus is required when DDC bus is shared with other modules.

15. R7 is optional but recommended to sink possible ~100µA back-flow current from the VSEN+ pin. Back-flow current is present only when the

module is in a disabled state with power still available at the VDD pin.

16. Unused pins (SYNC, XTEMP, MGN, UVLO) can be no connect.

17. Internal reference supply pins (V25, VDDC, VR5, VR6) do not need external capacitors and can be no connect. Refer to “PCB Layout Guidelines”

on page 20 for more information.

ISL8270M

VIN

VDD

VOUT

VSET

SALRT

SDA

SCL

DDC

VDRVIN

VDRVOUT

C2 +

2x22µ

220µ

10µ

2.2

10µ

1µ

4x100µ

2x470µ

(POSCAP)

VR6

VR5

V25

VDDC

VSWH

PHASE

PMBus ADDRESS = 0x28

R3,R4,R5,R6 = 4.7k

200

VAUX

3.3V TO 5V

VIN

4.5V TO 13.2V

VOUT

1.2V 25A

VOUT_COMMAND = 1.2V

(Notes 13, 14)

(Note 15)

(Note 16)

(Note 17)

ISL8270MEVAL1Z Datasheet(PDF) 14 Page - Renesas Technology Corp

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