MP2932 - 6-PHASE PWM CONTROLLER WITH 8-BIT ADC CODE

MP2932 Rev.1.02

www.MonolithicPower.com

5

4/30/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

PIN FUNCTIONS

Pin #

Name

Description

1

ID7

ID inputs from microprocessor. These codes determine output regulation voltage.

2

ID6

3

ID5

4

ID4

5

ID3

6

ID2

7

ID1

8

ID0

9

VRSEL

Select internal ID code. When it is tied to GND, the extended VR10 is selected. When

it’s floated or tied to high, VR11 code is selected.

10

OFS

Offset between REF and DAC program pin. The OFS pin can be used to program a

DC offset current which will generate a DC offset voltage between the REF and DAC

pins. The polarity of the offset is selected by connecting the resistor to GND or VCC.

For no offset, the OFS pin should be left unconnected.

11

IOUT

A resistor needs to be placed between IOUT and GND to ensure the proper operation.

The voltage at IOUT pin will be proportional to the load current.

12

DAC

Internal DAC reference output determined by ID codes

13

REF

Error amplifier input. A capacitor 0.1uF is used between REF and GND to smooth the

voltage transition during Dynamic ID operations.

14

COMP

Error amplifier output pin. Tie to compensation network

15

FB

Output voltage feedback pin.

16

IDROOP

Current proportional to load current is flowed out through this pin

17

VDIFF

Remote sense amplifier output. VDIFF-GND=VSEN-RGND

18

RGND

Remote sense amplifier input. Remote output GND

19

VSEN

Remote sense amplifier input. Remote output.

20

SD

Shutdown Intelli-phase @ Hiz state. MP2932 cooperates with MPS Intelli-phase and

SD pin is connected to the EN of Intelli-phase.

21

VCC

Power supply. Connect this pin directly to a +5V supply.

22

ISEN5-

Phase 5 current sense amplifier differential inputs.

23

ISEN5+

24

PWM5

Phase 5 PWM output.

25

PWM2

Phase 2 PWM output.

26

ISEN2+

Phase 2 current sense amplifier differential input.

27

ISEN2-

28

ISEN4-

Phase 4 current sense amplifier differential input.

29

ISEN4+

30

PWM4

Phase 4 PWM output.

31

PWM1

Phase 1 PWM output.

32

ISEN1+

Phase 1 current sense amplifier differential input.

33

ISEN1-