Microchip MIC4606 Bedienungsanleitung

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2017-2022

Microchip Technology Inc. and its subsidiariesDS20005604G-page 1

MIC4606

Features

•5.5V to 16V Gate Drive Supply Voltage Range

•Advanced Adaptive Dead Time

•Intelligent Shoot-Through Protection

•MIC4606-1: Four Independent TTL Inputs

•MIC4606-2: Two PWM Inputs

•Enable Input for On/Off Control

•On-Chip Bootstrap Diodes

•Fast 35ns Propagation Times

•Drives 1000pF Load with 20ns Rise and

Fall Times

•Low Power Consumption: 235µA Total Quiescent

Current

•Separate High-Side and Low-Side Undervoltage

Protection

•-40°C to +125°C Junction Temperature Range

Applications

•Full-Bridge Motor Drives

•Power Inverters

•High-Voltage Step-Down Regulators

•Distributed Power Systems

•Stepper Motors

General Description

The MIC4606 is an 85V full-bridge MOSFET driver that

features adaptive dead time and shoot-through protec-

tion. The adaptive dead-time circuitry actively monitors

both sides of the full bridge to minimize the time

between high-side and low-side MOSFET transitions,

thus maximizing power efficiency. Anti-shoot-through

circuitry prevents erroneous inputs and noise from

turning both MOSFETs of each side of the bridge on at

the same time.

The MIC4606 also offers a wide 5.5V to 16V operating

supply range to maximize system efficiency. The low

5.5V operating voltage allows longer run times in

battery-powered applications. Additionally, the MIC4606

device’s adjustable gate drive sets the gate drive voltage

to V

DD

for optimal MOSFET R

DS(ON)

, which minimizes

power loss due to the MOSFET’s R

DS(ON)

.

The MIC4606-1 features four independent inputs while

the MIC4606-2 utilizes two PWM inputs, one for each

side of the H-bridge. The MIC4606-1 and MIC4606-2

are available in a 16-pin 4 mm x 4 mm QFN package,

and a 16-pin 4 mm x 5 mm TSSOP package with an

operating temperature range of -40°C to +125°C.

Typical Application Circuit

μC

MIC4606

M

V

DD

5.5V-85V

MIC28511

V

OUT

V

IN

12V

MCP1826

V

OUT

V

IN

3.3V

BHI

BLI

AHI

ALI

BHB

BHO

BHS

BLO

AHB

AHO

AHS

ALO

MIC4606

(DC Motor Drive Application)

85V Full-Bridge MOSFET Drivers with Adaptive Dead Time and

Shoot-Through Protection

Produktspezifikationen