Overview

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) 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) become shorted.

RAA220001 Functional Diagram
RAA220001 Functional Diagram
  • Dual MOSFET drives for synchronous rectified bridge
  • Advanced adaptive zero shoot-through protection
  • 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 dV/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 (RoHS compliant)

Documentation

= Featured Documentation
Type Title Date
Datasheet
RAA220001 Datasheet
PDF 262 KB
Product Change Notice
PCN21057 - Alternate assembly facility of the listed Renesas QFN / TQFN packaged products
PDF 179 KB
Product Change Notice
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products
PDF 326 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
Application Note
AN1116: CMOS Applications Information
PDF 576 KB
6 items

Design & Development

ECAD Models

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Product Options

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    Part Number
    RAA220001GNP#HA0
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    Samples Available
    		 DFN Reel 3 Get Samples,
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