IRF3546

60A Dual Integrated Power Block 

May 29, 2013 | Final

4

PIN DESCRIPTIONS

PIN #

PIN NAME

PIN DESCRIPTION

1, 40, 41

VIN1

High current input supply pads. Connected to Drains of Q1. Recommended operating

range is 4.5V to 21V. Connect at least two 10uF 1206 ceramic capacitors and a 0.1uF

0402 ceramic capacitor. Place the capacitors as close as possible to VIN1 pins (40 and 41)

and PGND pins (38 and 39). The 0.1uF 0402 capacitor should be on the same side of the

PCB as the IRF3546.

2-6, 10-14

No Connect

No connects. These pins can be connected to the VIN planes to reduce PCB trace

resistances.

7

GATEH1

Gate connection of the Channel 1 control MOSFET Q1.

8, 19, 20,

38, 39, 42

PGND

High current Power Ground. Connected to Sources of Q2 and Q4. Note all pads are

internally connected in the package. Provide low resistance connections to the ground

plane and respective output capacitors.

9

GATEH2

Gate connection of the Channel 2 control MOSFET Q3.

15-17

VIN2

High current input supply pads. Connected to Drains of Q3. Recommended operating

range is 4.5V to 21V. Connect at least two 10uF 1206 ceramic capacitors and a 0.1uF

0402 ceramic capacitor. Place the capacitors as close as possible to VIN2 pins (16 and 17)

and PGND pins (19 and 20). The 0.1uF 0402 capacitor should be on the same side of the

PCB as the IRF3546.

18

GATEL2

Gate connection of the Channel 2 synchronous MOSFET Q4.

21-28

SW2

High Current Switch Node output for Channel 2. Connected to Source of Q3 and Drain of

Q4.

29-36

SW1

High Current Switch Node output for Channel 1. Connected to Source of Q1 and Drain of

Q2.

37

GATEL1

Gate connection of the Channel 1 synchronous MOSFET Q2.