MP8049S - 24V, 5.5A QUAD CHANNEL POWER HALF-BRIDGE

MP8049S Rev. 1.01

www.MonolithicPower.com

6

10/24/2018

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PIN FUNCTIONS (continued)

Pin #

Name

Description

31, 32

PGND2A

Power Ground of channel 2A. Connect the exposed pad on bottom side to the ground

plane.

33

BST2A

Bootstrap Supply. BST2A powers the high-side gate of the SW2A stage. Connect a 0.1μF

or greater capacitor between BST2A and SW2A.

34

VDR2

Gate Drive Supply Bypass. The voltage at VDR2 is supplied from an internal regulator from

its respective VSP. VDR2 powers the internal circuitry and internal MOSFET gate drive for

its respective SW2 stage. Bypass VDR2 to PGND with a 0.1μF to 10μF capacitor.

35, 36

AGND

Analog Ground.

37

VDR1

Gate Drive Supply Bypass. The voltage at VDR1 is supplied from an internal regulator from

its respective VSP. VDR1 powers the internal circuitry and internal MOSFET gate drive for

its respective SW1 stage. Bypass VDR1 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.