Data Sheet rev 0.2

IRCS2277S

www.irf.com

page

6/20

May 5

Connecting the current sensors

P1, P2 and P3 are connected with the optional shunt resistors placed on the driver board between the

phase output nodes and the motor.

CONNECTOR P4

SHU+

(motor side)

1

SHU-

(power module side)

2

U

3

1

2

3

CONNECTOR P8

SHV+

(motor side)

1

SHV-

(power module side)

2

V

3

1

2

3

CONNECTOR P12

SHW+

(motor side)

1

SHW-

(power module side)

2

W

3

1

2

3

Table 2: P4, P8 and P12 connectors for Kelvin contacts to shunt signals

SHU, SHV and SHW are sense pins connected to the shunt resistors terminals.

Test Points

Test points on board provide signals that are not available at the connectors. See the following table:

ONE FOR EACH CHANNEL

(CH1

U, CH2

V, CH3

W)

High side floating supply voltage

High side floating supply offset voltage (jumper)

Current sensor positive input

Current sensor negative input

Analog output

PWM output

Overcurrent output

Table 3: Test points