STR3W422MXD
STR3W422MXD is Off-Line PWM Controllers manufactured by Sanken.
Off-Line PWM Controllers with Integrated Power MOSFET
STR3W400MXD Series
Data Sheet
Description
The STR3W400MXD series is power IC for switching power supplies, incorporating a power MOSFET and a current mode PWM controller IC.
The operating mode of the IC automatically changes to green-mode or burst oscillation mode according to load in order to improve the all load efficiency. The product achieves high cost-performance power supply systems with few external ponents.
Features
- Bare Lead Frame: Pb-free (Ro HS pliant)
- 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 k Hz (typ.) Green mode, 30 k Hz (typ.) to 65 k Hz (typ.) Burst oscillation mode
- No Load Power Consumption, PIN < 30 m W
- Soft Start Function
- Random Switching Function
- Slope pensation Function (Subharmonic Oscillation Prevention)
- Leading Edge Blanking Function
- Bias Assist Function
- Protections
- Two Types of Overcurrent Protection (OCP): Pulseby-Pulse, built-in pensation 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
Typical Application
BR1 C1
STR3W424MXD U1
D51 T1
L51...
