Catalog
5 V, 4 A Synchronous Buck Power MOSFET Driver
Key Features
• 4 A Peak Drive Current
• Rise and Fall Times < 15 ns typical into 6000 pF
• Propagation delay from Inputs to Outputs < 20 ns
• Adaptive NonOverlap Time Optimized for Large Power MOSFETs
• Floating Top Driver Accommodates Applications Up to 25 V
• Undervoltage Lockout to Prevent Switching when the Input Voltage is Low
• Thermal Shutdown Protection Against Overtemperature
• < 1.0 mA Quiescent Current - Enabled
• 25 µA Quiescent Current - Disabled
• Internal TG to DRN Pulldown Resistor Prevents HV Supply-Induced Turn On of High-Side MOSFET
Description
AI
The NCP5351 is a dual MOSFET gate driver optimized to drive the gates of both high-side and low-side Power MOSFETs in a Synchronous Buck converter. The NCP5351 is an excellent companion to multiphase controllers that do not have integrated gate drivers. This architecture provides a power supply designer the flexibility to locate the gate drivers close to the MOSFETs. The 4 A drive capability makes the NCP5351 ideal for minimizing switching losses in MOSFETs with large input capacitance. Optimized internal, adaptive non-overlap circuitry further reduces switching losses by preventing simultaneous conduction of both MOSFETs.
