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MIC4100/1
100V Half Bridge MOSFET Drivers
General Description
The MIC4100/1 are high frequency, 100V Half Bridge
MOSFET driver ICs featuring fast 30ns propagation delay
times. The low-side and high-side gate drivers are
independently controlled and matched to within 3ns
typical. The MIC4100 has CMOS input thresholds, and the
MIC4101 has TTL input thresholds. The MIC4100/1
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 MIC4100/1 ensures the outputs are not
affected by supply glitches, HS ringing below ground, or
HS slewing with high speed voltage transitions. Under-
voltage protection is provided on both the low-side and
high-side drivers.
The MIC4100 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
Features
? Bootstrap supply max voltage to 118V DC
? Supply voltage up to 16V
? Drives high- and low-side N-Channel MOSFETs with
independent inputs
? CMOS input thresholds (MIC4100)
? TTL input thresholds (MIC4101)
? On-chip bootstrap diode
? Fast 30ns propagation times
? Drives 1000pF load with 10ns rise and fall times
? Low power consumption
? Supply under-voltage protection
? 3 ? pull up , 3 ? pull down output resistance
? Space saving SOIC-8L package
? –40 ° C to +125 ° C junction temperature range
Applications
Micrel’s web site at www.micrel.com.
?
?
?
?
High voltage buck converters
Push-pull converters
Full- and half-bridge converters
Active clamp forward converters
___________________________________________________________________________________________________________
Typical Application
9V to 16V Bias
VDD
HB
100V Supply
PWM
Controller
HI
LI
MIC4100
SO-8
HO
HS
V OUT
GND
LO
100V Buck Regulator Solution
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
March 2006
M9999-031506
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