MIC4102

100V Half Bridge MOSFET Driver

with Anti-Shoot Through Protection

PRELIMINARY SPECIFICATIONS

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

November 2006

M9999-112806

General Description

The MIC4102 is a high frequency, 100V Half Bridge

MOSFET driver IC featuring internal anti-shoot-through

protection. The low-side and high-side gate drivers are

controlled by a single input signal to the PWM pin. The

MIC4102 implements adaptive anti-shoot-through circuitry

to optimize the switching transitions for maximum

efficiency. The single input control also reduces system

complexity and greatly simplifies the overall design.

The MIC4102 also features a low-side drive disable pin.

This gives the MIC4102 the capability to operate in a non-

synchronous buck mode. This feature allows the MIC4102

to start up into applications where a bias voltage may

already be present without pulling the output voltage down.

Under-voltage protection on both the low-side and high-

side supplies forces the outputs low. An on-chip boot-strap

diode eliminates the discrete diode required with other

driver ICs.

The MIC4102 is available in the SOIC-8L package with a

junction operating range from –40

°C to +125°C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

Features

• Drives high- and low-side N-Channel MOSFETs with

single input

• Adaptive anti-shoot-through protection

• Low side drive disable pin

• Bootstrap supply voltage to 118V DC

• Supply voltage up to 16V

• TTL input thresholds

• On-chip bootstrap diode

• Fast 30ns propagation times

• Drives 1000pF load with 10ns rise and 6ns fall times

• Low power consumption

• Supply under-voltage protection

• 2.5Ω pull up , 1.5Ω pull down output resistance

• Space saving SOIC-8L package

• –40°C to +125°C junction temperature range

Applications

• High voltage buck converters

• Networking / Telecom power supplies

• Automotive power supplies

• Current Fed Push-Pull Topologies

• Ultrasonic drivers

• Avionic power supplies

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Typical Application

100V Buck Regulator Solution