AC-DC Converter ICs with Adjustable Standby Operating Point

The STR6A100MV/HVD series from Sanken are power ICs for switching power supplies, incorporating a 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 components.

Applications are expected to include:

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

(click on image to enlarge)

Features include:

• 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)
• Current Mode Type pwm Control
• Soft Start Function
• Adjustable Standby Operating Point
  • No Load Power Consumption < 15 mW
• Operation Mode
  • Fixed Frequency, 100 kHz
  • Green-Mode, 25 kHz to 100 kHz
  • Burst Oscillation Mode
• Random Switching Function
• Slope Compensation Function
• Leading Edge Blanking Function
• Bias Assist Function
• Protections
  • Overcurrent Protection (OCP): Pulse-by-Pulse
  • Overload Protection with Timer (OLP): Auto-restart
  • Overvoltage Protection (OVP): Auto-restart
  • Thermal Shutdown (TSD): Auto-restart