RAA220001
RAA220001 is Synchronous Rectified Buck MOSFET Driver manufactured by Renesas.
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) through a 30kΩ resistor, limiting the output voltage of the converter close to the gate threshold of the low-side MOSFET. This design is dependent on the current being shunted, which provides some protection to the load should the upper MOSFET(s) bee shorted.
Applications
- High light-load efficiency voltage regulators
- Core regulators for advanced microprocessors
- High current DC/DC converters
Features
- Dual MOSFET drives for synchronous rectified bridge
- Advanced adaptive zero shoot-through protection ○ PHASE detection ○ LGATE detection ○ Auto-zero of r DS(ON) conduction offset effect
- Low standby bias current
- 36V internal bootstrap switcher
- Bootstrap capacitor overcharging prevention
- Integrated high-side gate-to-source resistor to prevent from self turn-on due to high input bus d V/dt
- Pre-POR overvoltage protection for start-up and shutdown
- Power rails undervoltage protection
- Expandable bottom copper pad for enhanced heat sinking
- Dual flat no-lead (DFN) package
- Near chip-scale package footprint; improves PCB efficiency and thinner in profile
- Pb-free (Ro HS pliant)
Related Literature
For a full list of related documents, visit our website:
- RAA220001 device page
Pin 6
+5V 40k
22.4k
POR/ Control Logic
Shoot Through Protection
R16DS0005EU0100 Rev.1.00 Jul.11.19
Figure 1. Block Diagram
BOOT UGATE 10k
PHASE
30k Pin 7
Pins 6 and 7 must be tied together
LGATE
Page 1 of 15
1. Overview
1.1 Typical...