MP8048 - 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE

M8048 Rev. 1.1

www.MonolithicPower.com

5

9/10/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2009 MPS. All Rights Reserved.

Pin #

Name

Description

33

VDR2A

Gate Drive Supply Bypass. The voltage at VDR2A is supplied from an internal

regulator from its respective VSP. VDR2A powers the internal circuitry and internal

MOSFET gate drive for its respective SW2A stage. Bypass VDR2A to PGND with a

0.1μF to 10μF capacitor.

34

VDR2B

Gate Drive Supply Bypass. The voltage at VDR2B is supplied from an internal

regulator from its respective VSP. VDR2B powers the internal circuitry and internal

MOSFET gate drive for its respective SW2A stage. Bypass VDR2B to PGND with a

0.1μF to 10μF capacitor.

36

VDR1A

Gate Drive Supply Bypass. The voltage at VDR1A is supplied from an internal

regulator from its respective VSP. VDR1A powers the internal circuitry and internal

MOSFET gate drive for its respective SW1 stage. Bypass VDR1A to PGND with a

0.1μF to 10μF capacitor.

37

VDR1B

Gate Drive Supply Bypass. The voltage at VDR1A is supplied from an internal

regulator from its respective VSP. VDR1B powers the internal circuitry and internal

MOSFET gate drive for its respective SW1 stage. Bypass VDR1A to PGND with a

0.1μF to 10μF capacitor.

38

BST1B

Bootstrap Supply. BST1B powers the high-side gate of the SW1B stage. Connect a

0.1μF or greater capacitor between BST1B and SW1B.

39,40

PGND1B

Power Ground of Channel 1B. Connect the exposed pad on bottom side to the ground

plane.