SC420AIMLTRT 查看數據表（PDF） - Semtech Corporation

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产品描述 (功能)

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SC420AIMLTRT

High Speed, Combi-Sense™, Synchronous Power MOSFET Driver for Mobile Applications

Semtech Corporation 

SC420A

POWER MANAGEMENT

Applications Information (Cont.)

Timing Waveforms measured in a system

The following waveforms were noted using a 3-phase SC2647 Combi-Sense™ PWM controller system. Typical operating

conditions for this system are

Input Voltage, Vin = 10 – 25V

Output Current, Iout = 0 – 52A

Output Voltage, Vout = 0.8 – 1.85V

Timing Diagram, Vin = 10V, Iout = 0, Vout = 1.45V

Timing Diagram, Vin = 10V, Iout = 10A, Vout = 1.45V

Timing Diagram, Vin = 10V, Iout = 20A, Vout = 1.45V

Timing Diagram, Vin = 10V, Iout = 30A, Vout = 1.45V

Component

Manufacturer

Series or Part Number

High Side MOSFET (each

phase)

International Rectifier

2 IRF7811AV's, total gate capacitance = 3.602 nF

Low Side MOSFET (each phase) Fairchild Semiconductor 2 FDS7066's, total gate capacitance = 9.946 nF

Output inductor (each phase)

Panasonic

Series 2334Q, L= 700nH, RL~ 1mohm

Controller

Semtech

SC2647

List of components used for above application

© 2004 Semtech Corp.

14

United States Patent No. 6,441,597

www.semtech.com

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