onsemi NCP81075 Dual MOSFET Gate Driver
onsemi NCP81075 Dual MOSFET Gate Driver is designed to drive the gates of both High Side and Low Side power MOSFETs in a synchronous buck converter. The NCP81075 integrates a driver IC and an on-chip bootstrap diode, eliminating the need for an external discrete diode. A high floating top driver design accommodates HB voltage as high as 180V. The Low Side and High Side are independently controlled and match to 4ns 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. The NCP81075 is offered in SOIC-8, DFN8, and WDFN10 packages for design flexibility and is Pb−Free, Halogen-Free/BFR-Free, and RoHS-Compliant.Features
- Drives two N-Channel MOSFETs in High Side and Low Side
- Integrated Bootstrap Diode for High Side Gate Drive
- Bootstrap supply voltage range up to 180V
- 4A source, 4A sink output current capability
- Drives 1nF load with typical rise/fall times of 8ns/7ns
- Wide 8.5V to 20V supply voltage range
- Fast 20ns propagation delay times (Typical)
- 2ns delay matching (Typical)
- 8ns rise / 7ns fall times with 1000pF load
- Switching frequency up to 1MHz
- Under-Voltage Lockout (UVLO) protection for drive voltage
- Operating junction temperature range of -40°C to 140°C
- Package options: SOIC-8, DFN8, WDFN10
- Pb−Free
- Halogen Free/BFR Free
- RoHS Compliant
Applications
- Buck converters
- Telecom and datacom
- Isolated power supplies
- Class D audio amplifier
- Two switch and Active Clamp Forward Converters
- Solar optimizer
Application Diagram
Opublikowano: 2018-01-25
| Zaktualizowano: 2024-05-10
