MIC4606 datasheet(16/40 Pages) MICROCHIP

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MIC4606

DS20005604D-page 16

 2017-2019 Microchip Technology Inc.

TABLE 4-4:

MIC4606-2 TSSOP PIN FUNCTION TABLE

Number

MIC4606-2

TSSOP

Description

BHB

Phase B high-side bootstrap supply. An external bootstrap capacitor is required. Connect

the bootstrap capacitor between this pin and BHS. An on-chip bootstrap diode is

connected from VDD to BHB.

Enable input. A logic high on the enable pin results in normal operation. A logic low dis-

ables all outputs and places the driver into a Low-Current Shutdown mode. Do not leave

this pin floating.

BPWM

Phase B PWM input for single input signal drive.

No connect.

APWM

Phase A PWM input for single input signal drive.

No connect.

AHB

Phase A high-side bootstrap supply. An external bootstrap capacitor is required. Connect

the bootstrap capacitor between this pin and AHS. An on-chip bootstrap diode is

connected from VDD to AHB.

AHO

Phase A high-side drive output. Connect to the external high-side power MOSFET gate.

AHS

Phase A high-side drive reference connection. Connect to the external high-side power

MOSFET source terminal. Connect a bootstrap capacitor between this pin and AHB.

ALO

Phase A low-side drive output. Connect to the external low-side power MOSFET gate.

VDD

Input supply for gate drivers. Decouple this pin to VSS with a >1.0 µF capacitor.

VSS

Driver reference supply input. Connect to the power ground of the external circuitry.

BLO

Phase B low-side drive output. Connect to the external low-side power MOSFET gate.

BHS

Phase B high-side drive reference connection. Connect to the external high-side power

MOSFET source terminal. Connect a bootstrap capacitor between this pin and BHB.

BHO

Phase B high-side drive output. Connect to the external high-side power MOSFET gate.

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