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