Microchip MIC4104 Bedienungsanleitung

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MIC4103/4104

100V Half-Bridge MOSFET Drivers with

3A/2A Sinking/Sourcing Current

General Description

The MIC4103 and MIC4104 are high-frequency, 100V half-

bridge MOSFET drivers with faster turn-off characteristics

than the MIC4100 and MIC4101 drivers. They feature fast

24ns propagation delay times and 6ns driver fall times.

The low-side and high-side gate drivers are independently

controlled and matched to within 3ns (typical). The

MIC4103 has CMOS input thresholds and the MIC4104

has TTL input thresholds. The MIC4103/4 include a high-

voltage internal diode that charges the high-side gate drive

bootstrap capacitor.

A robust, high-speed, and low-power level shifter provides

clean level transitions to the high-side output. The robust

operation of the MIC4103/4 ensuresthe outputs are not

affected by supply glitches, HS ringing below ground,or

HS slewing with high-speed voltage transitions.

Undervoltage protection is provided on both the low-side

and high-side drivers.

The MIC4103 and MIC4104 are available in an 8-pin SOIC

package with an operating junction temperature range of

–40°C to +125°C.

Datasheets and support documentation are availableon

Micrel’s web site at: www.micrel.com

.

Features

•Asymmetrical, low impedance outputs drive 1000pF

load with 10ns rise times and 6ns fall times

•Bootstrap supply maximum voltage to 118V DC

•Supply voltage up to 16V

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

independent inputs

•CMOS input thresholds (MIC4103)

•TTL input thresholds (MIC4104)

•On-chip bootstrap diode

•Fast 24ns propagation times

•Low power consumption

•Supply undervoltage protection

•Typical 2.5Ωpull-up and 1.25Ωpull-down output driver

resistance

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

Applications

•High-voltage buck converters

•Full- and half-bridge power topologies

•Active clamp forward converter

•Two switch forward topologies

•Interface to digital controllers

Typical Application

100V Buck Regulator Solution

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

November 12, 2014

Revision 3.0

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