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Picor Corporation • picorpower.com

PI2061

Rev 1.4

Pin Description

Pin Name

Pin

Number

Description

PGND

1

Gate Driver Switch Return: This pin is the high current return path for the gate driver turn off switch.

Connect this pin to the low side of VC bypass capacitor and SGND.

GATE

2

Gate Drive Output: This pin drives the gate of the external N-channel MOSFET. Under normal

operating conditions, the GATE pin pulls high to approximately 2*VC with respect to SGND pin. The

controller turns the GATE off during an over-current fault that is above the overcurrent voltage

threshold (166mV during power up and 70mV in steady state).

VC

3

Controller Input Supply: This pin is the supply pin for the control circuitry and gate driver. Connect

a 0.1μF capacitor between the VC pin and the SGND pin. Voltage on this pin is regulated to 11.7V

pin and the supply input as shown in Figure 1.

SGND

4

VC Return: This pin is the return (ground) for the control circuitry. Connect this pin to the low side of

EN

5

Enable: Pull this pin low with 8µA or more to disable the gate driver and reset the latch. Tie this pin

to VC if the Enable/disable feature is not used.

SP

6

Positive Sense Input & Clamp: Connect SP pin to the positive side of the sense resistor. The

magnitude of the voltage difference between SP and SN provides an indication of the current

through the sense resistor.

SN

7

Negative Sense Input & Clamp: Connect SN pin to the negative side of the sense resistor. The

magnitude of the voltage difference between SP and SN provides an indication of the load current

through the sense resistor.

NC

8, 10

No Connect: Leave pins unconnected

FT

9

Fault Status Output: This open collector pin transitions to high resistance to indicate a fault. When

the controller input voltage is in under voltage, VC - SGND < 7V this pin is high resistance as well.

When the part is in a normal operating condition and gate driver is enabled this pin is low resistance.

Package Pin-Outs

10 Lead DFN (3mm x 3mm)

Top view

1

2

3

4

5

10

9

8

7

6

GATE

VC

NC

PGND

EN

SGND

SN

NC

FT

SP

Not Recommended for New Designs