Microchip MIC4103 Manual

Microchip Ikke kategoriseret MIC4103

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MIC4103/4104

100V Half-Bridge MOSFET Drivers with

3A/2A Sinking/Sourcing Current

General Description

T - -he 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 ensures the 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 available on

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

• Ω Ω Typical 2.5 -pull up and 1.25 -pull 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 • Jose, CA 95131 • USA • tel +1 (408) 944 0800 • fax + 1 (408) 474 1000 • San - - http://www.micrel.com

November 12, 2014 Revision 3.0

Micrel, Inc.

MIC4103/4104

Ordering Information

Part Number Input Junction Temperature Range Package

MIC4103YM 40 –CMOS ° 8- to +125°C Pin SOIC

MIC4104YM –TTL 40° to +125°C 8- Pin SOIC

Pin Conguration

8- ( Pin SOIC M)

(Top View)

Pin Description

Pin Number

Pin Name

Pin Function

1 VDD Positive Supply to lower gate drivers. Decouple this pin to VSS (Pin 7). Bootstrap diode connected

to HB (pin 2).

2 HB High-Side Bootstrap supply. External bootstrap capacitor is required. Connect positive side of

bootstrap capacitor to this pin. Bootstrap diode is on- chip.

3 -HO High Side Output. Connect to gate of High Side power MOSFET.-

4 HS High-Side Source connection. Connect to source of High Side power MOSFET. Connect negative -

side of bootstrap capacitor to this pin.

5 -HI High Side input.

6 -LI Low Side input.

7 VSS Chip negative supply, generally will be ground.

8 -LO Low Side Output. Connect to gate of Low-Side power MOSFET.

November 12, 2014 2 Revision 3.0

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	MIC4103

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