MIC4607 datasheet(15/42 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005610A-page 15

MIC4607

AHS

Phase A High-Side Driver Return. Connect to the bootstrap capacitor

and to a resistor that connect to the source of the external MOSFET.

See the Applications section for additional information on the resistor.

AHO

Phase A High Side Drive Output. Connect to the gate of the external

high-side power MOSFET.

AHB

Phase A High-Side Bootstrap Supply. An external bootstrap capacitor

is required. Connect the bootstrap capacitor across this pin and AHS.

An on-board bootstrap diode is connected from VDD to AHB.

VDD

Input Supply for Gate Drivers and Internal Logic/Control Circuitry.

Decouple this pin to VSS with a minimum 2.2 μF ceramic capacitor.

DLY

Fault Delay. Connect an external capacitor from this pin to ground to

increase the current-limit reset delay. Leave open for minimum delay.

Do not externally drive this pin.

VSS

Phase C Power and Control Circuitry Ground.

CLO

Phase C Low-Side Drive Output. Connect to the gate of the low-side

power MOSFET gate.

CHS

Phase C High-Side Driver Return. Connect to the bootstrap capacitor

and to a resistor that connect to the source of the external MOSFET.

See the Applications section for additional information on the resistor.

CHO

Phase C High-Side Drive Output. Connect to the gate of the external

high-side power MOSFET.

CHB

Phase C High-Side Bootstrap Supply. An external bootstrap capacitor

is required. Connect the bootstrap capacitor across this pin and CHS.

An on-board bootstrap diode is connected from VDD to CHB.

No Connect.

TABLE 3-2:

TSSOP PIN FUNCTION TABLE

Pin Number

TSSOP

Pin Name

Description

MIC4607-1

MIC4607-2

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