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3

PIN DESCRIPTIONS

Pin # Pin name

Description

10,21 Vs

High voltage supply (12V-60V)

17

Vdd

Logic supply (5V)

22

OutA

Half bridge output

13

OutB

Half bridge output

2

OutC

Half bridge output

1,23

PGND

Power ground, high current ground return path of the bridge outputs

11

SGND

Analog and logic circuits ground

19

DISABLE

Disable logic Input, CMOS. When high disables all six output MOSFETs and makes the FAULT output high.

Do not leave floating at any time.

18

Warning

Output pin goes high if Tj rises above 135°C and goes low again if T

8

FAULT

The output pin is high under the following conditions:

a) Short-Circuit and Over Current condition.

b) When T

c) When V

d) Disable pin is activated (pulled high)

This can be used as an interrupt to the microcontroller.

16

PWM_HA

CMOS logic input: When HIGH, indicates the Pchannel of output A is to be turned on.

15

PWM_LA

CMOS logic input: When HIGH, indicates the Nchannel of output A is to be turned on.

12

PWM_HB

CMOS logic input: When HIGH, indicates the Pchannel of output B is to be turned on.

14

PWM_LB

CMOS logic input: When HIGH, indicates the Nchannel of output B is to be turned on.

7

PWM_HC

CMOS logic input: When HIGH, indicates the Pchannel of output C is to be turned on.

5

PWM_LC

CMOS logic input: When HIGH, indicates the Nchannel of output C is to be turned on.

20

IMON_A

Current monitor output, approximate current 1/4100 of Phase A current

3

IMON_B

Current monitor output, approximate current 1/3500 of Phase B current

4

IMON_C

Current monitor output, approximate current 1/3800 of Phase C current

9

OFF

I/O Pin. Disables all Fault Mechanisms (except under voltage lockout) when pulled LOW. Can be used as a

latched fault output but does not indicate undervoltage lockout. Leave this pin floating for normal operation.

Do not pull HIGH.

All inputs are CMOS levels. Inputs can accept CMOS levels as low as 3.3 volts.

CMOS logic inputs cannot be left floating

at any time.

PIN

DESCRIPTIONS

SA305