P9235A-R Datasheet

© 2016 Integrated Device Technology, Inc

8

May 17, 2016

Table 7. Pin Descriptions (continued)

Pin(s) Name

Type

Description

20

LED_RED

O

Open drain output. Connect a red LED to this pin. This pin can sink a maximum current of

25 mA (typical)

21

LED_GRN

O

Open drain output. Connect a green LED to this pin. This pin can sink a maximum current

of 25 mA (typical)

22

GPIO_B2

I/O

General purpose input/output. The GPIO’s power is supplied from the VDDIO pin. This pin

is configured as an output. If it is not used then it may be left floating.

23

GPIO_B3

I/O

General purpose input/output. The GPIO’s power is supplied from the VDDIO pin. This pin

is configured as an output. If it is not used then it may be left floating.

24

GH_BRG2

O

Gate driver output for the high-side half bridge 2.

25

BST_BRG2

I

Bootstrap pin for the half bridge 2. Tie an external capacitor from this pin to the SW_BRG2

to generate a drive voltage, which is higher than the input voltage.

26

SW_BRG2

O

Switch node for half bridge 2.

27

GL_BRG2

O

Gate driver output for the low-side half bridge 2.

28

GND_BRG

-

Ground return connection for half bridge 1 and half bridge 2 external FETs and associated

components.

29

GL_BRG1

O

Gate driver output for the low-side half bridge 1.

30

SW_BRG1

O

Switch node for half bridge 1.

31

BST_BRG1

I

Bootstrap pin for half bridge 1. Tie an external capacitor from this pin to the SW_BRG1 to

generate a drive voltage higher than the input voltage.

32

GH_BRG1

O

Gate driver output for the high-side half bridge 1.

33

VIN_DRV

I

Input power supply for the internal gate drivers. Connect a 10 µF capacitor from this pin to

ground.

34

VBRG_IN

I

Bridge voltage input voltage sense.

35

VSNS_GND -

Ground connection for voltage sense signals.

36

VSNS_IN

I

Voltage modulation signal input.

37

ISNS_IN

I

Current modulation signal input.

ISNS_OUT is fed into this pin after external conditioning

38

ISNS_OUT

O

Differential (ISNS_H - ISNS_L) current sense buffered output.

39

ISNS_L

I

Input current sense negative input

40

ISNS_H

I

Input current sense positive input

EPGND

-

Expose pad. Thermal pad for heat sinking purposes. Connect EPGND to GND plane.