Datasheet > RAA220001

RAA220001

更新时间： 2024-11-30 14:57:51

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
15页	262K
描述
Synchronous Rectified Buck MOSFET Driver

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中文翻译

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RAA220001 数据手册

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.

Features

• Dual MOSFET drives for synchronous rectified

bridge

• Advanced adaptive zero shoot-through protection

○ PHASE detection

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.

○ LGATE detection

○ Auto-zero of r

conduction offset effect

DS(ON)

• Low standby bias current

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.

• 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

This driver also has an overvoltage protection feature

that is operational while V 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.

• 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)

Applications

• High light-load efficiency voltage regulators

• Core regulators for advanced microprocessors

• High current DC/DC converters

Related Literature

For a full list of related documents, visit our website:

• RAA220001 device page

VCC

BOOT

Pin 6

UGATE

10k

POR/

Control

Logic

+5V

40k

PHASE

Shoot-

PWM

30k

Through

Protection

VCC

Pin 7

Pins 6 and 7 must be

tied together

22.4k

LGATE

GND

Figure 1. Block Diagram

R16DS0005EU0100 Rev.1.00

Jul.11.19

Page 1 of 15

12 3 4 5 6 7...15

中文翻译

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与RAA220001相关器件

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RAA223021	RENESAS	获取价格	700V AC/DC 稳压器，具有超低备用功率，输出功率高达 12W
RAA223181	RENESAS	获取价格	900V Off-Line Flyback Regulator
RAA223183	RENESAS	获取价格	1000V Off-Line Flyback Regulator
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