RAA220001 Overview
Datasheet RAA220001 Synchronous Rectified Buck MOSFET Driver The RAA220001 is a high frequency MOSFET driver designed to drive upper and lower power N-channel MOSFETs in a synchronous rectified buck converter topology. In the RAA220001, the upper and lower gates are both driven to an externally applied voltage that provides the capability to optimize applications involving trade-offs between gate charge and conduction losses. An advanced adaptive shoot-through protection is integrated to prevent both the upper and lower MOSFETs from conducting simultaneously and to minimize dead time. The RAA220001 has a 10kΩ integrated high-side gate-to-source resistor to prevent self turn-on due to high input bus dV/dt. This driver also has an overvoltage protection feature that is operational while VCC is below the POR threshold. The PHASE node is connected to the gate of the low-side MOSFET (LGATE)...
RAA220001 Key Features
- Dual MOSFET drives for synchronous rectified bridge
- Advanced adaptive zero shoot-through protection ○ PHASE detection ○ LGATE detection ○ Auto-zero of rDS(ON) conduction of
- Low standby bias current
- 36V internal bootstrap switcher
- Bootstrap capacitor overcharging prevention
- Integrated high-side gate-to-source resistor to
- Pre-POR overvoltage protection for start-up and
- Power rails undervoltage protection
- Expandable bottom copper pad for enhanced heat
- Dual flat no-lead (DFN) package