MIC4103_10 Datasheet, PDF (1/18 Pages) Micrel Semiconductor – 100V Half Bridge MOSFET Drivers 3/2A Sinking/Sourcing Current

MIC4103/4104
100V Half Bridge MOSFET Drivers
3/2A Sinking/Sourcing Current
General Description
Features
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 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 MIC4103 and MIC4104 are available in an 8-pin SOIC
package with a operating junction temperature range of –
40°C to +125°C.
• Asymmetrical, low impedance outputs drive 1000pF
load with 10ns rise times and 6ns fall times
• 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 (MIC4103)
• TTL input thresholds (MIC4104)
• On-chip bootstrap diode
• Fast 24ns propagation times
• Low power consumption
• Supply undervoltage protection
• Typical 2.5Ω pull up and 1.25Ω pull down output driver
resistance
• –40°C to +125°C junction temperature range
Applications
Data sheets and support documentation can be found on • High-voltage buck converters
Micrel’s web site at: www.micrel.com.
• Full- and half-bridge power topologies
• Active clamp forward converter
• Two switch forward topologies
• Interface to digital controllers
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Typical Application
100V Buck Regulator Solution
MLF and MicroLead Frame is a registered trademark of Amkor Technologies, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
November 2010
M9999-110910-B