Microchip Technology MIC4103/MIC4104 Gate Drivers
Microchip Technology MIC4103/MIC4104 Gate Drivers are high-frequency, 100V half-bridge MOSFET drivers with independently controlled high-side and low-side outputs. The devices supply fast turn-off characteristics, an integrated high-voltage bootstrap diode, a robust level shifter, and undervoltage protection for both drivers. The MIC4103 employs CMOS input thresholds, while the MIC4104 utilizes TTL input thresholds.
The Microchip MIC4103/MIC4104 drivers support clean high-side output transitions during supply glitches, high-speed voltage changes, and HS ringing below ground. The devices have asymmetrical, low-impedance outputs and support high-voltage buck converters, full- and half-bridge power topologies, active clamp forward converters, two-switch forward topologies, and digital controller interfaces.
Features
- High-frequency half-bridge MOSFET drivers
- Independent high-side and low-side inputs
- High-side and low-side N-channel MOSFET drive
- Robust high-speed, low-power level shifter
- Clean high-side output transitions
- Immunity to supply glitches
- Immunity to HS ringing below ground
- Support for high-speed HS voltage transitions
- Asymmetrical low-impedance outputs
- MIC4103 CMOS input thresholds
- MIC4104 TTL input thresholds
- Integrated high-voltage bootstrap diode
- Low power consumption
- Supply undervoltage protection
- Low-side driver protection
- High-side driver protection
Applications
- High-voltage buck converters
- Full- and half-bridge power topologies
- Active clamp forward converter
- Two-switch forward topologies
- Interface to digital controllers
Specifications
- Half-bridge operating voltage of 100V
- Maximum bootstrap supply voltage of 118VDC
- Supply voltage range of 9V to 16V
- Peak sink current of 3A
- Peak source current of 2A
- Typical pull-up output resistance of 2.5Ω
- Typical pull-down output resistance of 1.25Ω
- Typical propagation delay of 24ns
- Typical delay matching of 3ns
- Output rise time of 10ns with a 1000pF load
- Output fall time of 6ns with a 1000pF load
- HS continuous voltage range of -1V to 100V
- HS repetitive transient voltage range of -5V to 105V
- HS slew rate of 50V/ns
- Operating junction temperature range of -40°C to +125°C
- 8-pin SOIC package
MIC4103 Typical Application
Functional Block Diagram
