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PIN DESCRIPTIONS

Pin # Pin name

Description

10,21 Vs/VPWR

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 independent of the Control regis-

ters.

18

Warning

Output pin goes high at Tj > 135°C.

8

FAULT

The Fault output is raised under the following conditions:

a) Short-Circuit and Over Current condition.

b) High Temperature condition.

c) High Voltage Supply Vs < 12V.

This can be used as an interrupt to the microcontroller. It will be reset after status data has been read by

the microcontroller. A FAULT will also disable the outputs of the device.

16

PWM_HA

goes high in order to indicate the Pchannel of output A is to be turned on.

15

PWM_LA

goes high in order to indicate the Nchannel of output A is to be turned on.

12

PWM_HB

goes high in order to indicate the Pchannel of output B is to be turned on.

14

PWM_LB

goes high in order to indicate the Nchannel of output B is to be turned on.

7

PWM_HC

goes high in order to indicate the Pchannel of output C is to be turned on.

5

PWM_LC

goes high in order to indicate the Nchannel of output C is to be turned on.

20

IMON_A

Current monitor output, approximate current 1/4000 of Phase A current

3

IMON_B

Current monitor output, approximate current 1/3600 of Phase B current

4

IMON_C

Current monitor output, approximate current 1/3700 of Phase C current

9

OFF

Disables all Fault Mechanisms when pulled HIGH

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

PIN

DESCRIPTIONS

SA305