Microchip | MIC4103YM

The MIC4103YM and MIC4104 are high frequency, 100 V Half Bridge MOSFET drivers with faster turn-off characteristics than the MIC4100 and MIC4101 drivers. They feature fast 24 ns propagation delay times and 6 ns 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-lead SOIC package with a operating junction temperature range of –40 °C to +125 °C.

Key Features:

• Asymmetrical, low impedance outputs drive 1000 pF load with 10 ns rise times and 6ns fall times.
• Bootstrap supply max voltage to 118 V DC.
• Supply voltage up to 16 V.
• Drives high- and low-side N-Channel MOSFETs with independent input.
• CMOS input thresholds (MIC4103).
• TTL input thresholds (MIC4104).
• On-chip bootstrap diode.
• Fast 24 ns propagation times.
• Low power consumption.
• Supply under-voltage protection.
• Typical 2.5 W pull up and 1.25 W 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.