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STR3W424MXD

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Package : TO220F-6L

RoHS : YES

Data Sheet(478KB)
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The STR3W424MXD is power IC for switching power supplies, incorporating a power MOSFET and a current mode PWM controll IC. The operation mode is automatically changed, in response to load, to the fixed switching frequency, to the switching frequency control, and to the burst oscillation mode. Thus, the power efficiency is improved. The product achieves high cost-performance power supply systems with few external components.

Data Download

Design Support

  • Technical Documents

Technical Documents

Features

    • Bare Lead Frame: Pb-free (RoHS Compliant)
    • Current Mode Type PWM Control
    • Improving circuit efficiency (Since the step drive control can keep VRM of secondary rectification diodes low, the circuit efficiency can be improved by low VF)
    • Automatically changed operation mode in response to load conditions
      Fixed switching frequency mode, 65 kHz (typ.)
      Green mode, 30 kHz (typ.) to 65 kHz (typ.)
      Burst oscillation mode
    • No Load Power Consumption, PIN < 30 mW
    • Soft Start Function
    • Random Switching Function
    • Slope Compensation Function
      (Subharmonic Oscillation Prevention)
    • Leading Edge Blanking Function
    • Bias Assist Function
    • Protections
      – Two Types of Overcurrent Protection (OCP): Pulse-by-Pulse, built-in compensation circuit to minimize OCP point variation on AC input voltage
      – Overload Protection (OLP): Auto-restart
      – AC Input Voltage Detection Function
      Overvoltage Protection (HVP): Auto-restart
      Brown-In and Brown-Out Function: Auto-restart
      – Overvoltage Protection (OVP): Auto-restart
      – Thermal Shutdown (TSD): Auto-restart with hysteresis

Application

  • White Goods
  • Office Automation Equipment
  • Industrial Equipment
  • Other Switched-Mode Power Supply

Specifications

Control Method PWM
Type Power IC
Output Current 70 W
RDS(ON) (max.) 1.400 Ω
VDSS (min.) 700 V
VCC (max.) 32 V
Oscillating Frequency(typ.) 65 kHz
OCP YES
OLP Auto Restart
OVP Auto Restart
Brown-in / out YES
TSD Auto Restart
Power Consumption at No Load <30mW
Package Weight (Typ.) 2.3 g
Automotive Qualified NO

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Physical Dimensions

Physical Dimensions

Selection Guide

STR3W400MXD Series
ProductsRonPout*
STR3W422MXD2.8 Ω40 W
STR3W424MXD1.4 Ω70 W
STR3W426MXD1.0 Ω80 W
* Open frame, 85 VAC～265 VAC

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