16V, 3.5A QUAD CHANNEL POWER HALF-BRIDGE

M8060 Rev. 0.9

www.MonolithicPower.com

4

5/5/2010

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© 2010 MPS. All Rights Reserved.

PIN FUNCTIONS

Pin #

Name

Description

1,2

SW1B

Switched Output 1B. Connect the output LC filter to SW1B. SW1B is valid approximately

100µs after VSP goes high.

3, 4

VSP1

Power Supply Input. Connect VSP1 to the positive side of the input power supply. Bypass

VSP1 to PGND as close to the IC as possible.

5,6

SW1A

Switched Output 1A. Connect the output LC filter to SW1A. SW1A is valid approximately

100µs after VSP goes high.

7

PGND1A

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

plane.

8

BST1A

Bootstrap Supply. BST1A powers the high-side gate of the SW1A stage. Connect a 0.1μF

or greater capacitor between BST1A and SW1A.

9

PWM1A

Driver Logic Input 1A. Drive PWM1A with the signal that controls the MP8060 SW1A.

Drive PWM1A high to turn on the high side switch; drive PWM1A low to turn on the

low-side switch.

10

PWM1B

Driver Logic Input 1B. Drive PWM1B with the signal that controls the MP8060 SW1B.

Drive PWM1B high to turn on the high side switch; drive PWM1B low to turn on the

low-side switch.

11

FAULTB

Fault Output. A low output at FAULTB indicates that the MP8060 has detected an over

temperature or over current condition. This output is open drain.

12

SHDNB Shutdown Input. When low, the IC will be shut off.

13,29

AGND

Analog Ground.

14

PWM2A

Driver Logic Input 2A. Drive PWM2A with the signal that controls the MP8060 SW2A.

Drive PWM2A high to turn on the high side switch; drive PWM2A low to turn on the

low-side switch

15

STBYB

Standby Input. Default low (internal pull-down). If driven high, the output of the drivers is

determined by the PWM1A/1B/2A/2B. If driven low, the output of both drivers is high

impedance.

16

PWM2B

Driver Logic Input 2B. Drive PWM2B with the signal that controls the MP8060 SW2B.

Drive PWM2B high to turn on the high side switch; drive PWM2B low to turn on the

low-side switch

17

BST2B

Bootstrap Supply. BST2B powers the high-side gate of the SW2B stage. Connect a 0.1μF

or greater capacitor between BST2B and SW2B.

18

PGND2B

Power Ground of Channel 2B. Connect the exposed pad on the bottom side to the ground

plane.

19,20

SW2B

Switched Output 2B. Connect the output LC filter to SW2B. SW2B is valid approximately

100µs after VSP goes high.

21, 22

VSP2

Power Supply Input. Connect VSP2 to the positive side of the input power supply. Bypass

VSP2 to PGND as close to the IC as possible.

23, 24

SW2A

Switched Output 2A. Connect the output LC filter to SW1A. SW1A is valid approximately

100µs after VSP goes high.

25

NC

No connect.

26

PGND2A

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

plane.

27

BST2A

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

or greater capacitor between BST2A and SW2A.