栅极驱动器 | NCP81085
概览
The NCP81085 is a high performance dual MOSFET gate driver optimized to drive the gates of both high and low side power MOSFETs in a synchronous buck converter. The NCP81085 uses an on−chip bootstrap diode to eliminate the external discrete diode. A high floating top driver design can accommodate HB voltage as high as 180 V. The low−side and high−side are independently controlled and match to 4 ns between the turn−on and turn−off of each other. Independent Under−Voltage lockout is provided for the high side and low side driver forcing the output low when the drive voltage is below a specific threshold.
- Class D Audio Amplifiers
- Two Switch and Active Clamp Forward Converters
- Telecom and Datacom
- Isolated Non−Isolated Power Supply Architectures
- Class D Audio Amplifiers
- WDFN9 (MT) Package
- Floating Top Driver Accommodates Boost Voltage up to 180 V
- Drives Two N-Channel MOSFETs in High-Side and Low-Side Configuration
- Switching Frequency up to 1 MHz
- 20 ns Propagation Delay Times
- 4 A Sink, 4 A Source Output Currents
- 8 ns Rise / 7 ns Fall Times with 1000 pF Load
- UVLO Protection
- Specified from −40°C to 140°C
- Pb−Free, Halogen Free/BFR Free and is RoHS Compliant
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