STR G5653 - STR G6454 Circuit diagram - Description
SCHEMATIC DIAGRAM
Switch-mode Power Supply STR- G5653/F6654
The Series
STR-G5653/F6654 is specifically designed to satisfy the requirements for
increased integration and reliability in off-line quasi-resonant fly back
converters. The series incorporates a high-precise error amplifying control and
drive circuit with discrete avalanche-rated power MOSFET, featuring fewer
external components, small-size and standard power supply. Covering the power
range from below 25 watts up to 300 watts for 100/115/230 VAC inputs, and up to
150 watts for 85 to 265 VAC universal input, these devices can be used in a
range of applications, from battery chargers and set top boxes, to televisions,
monitors, and industrial power supply units. Cycle-by-cycle current limiting,
under-voltage lockout with hysteresis, over-voltage protection, and thermal
shutdown protects the power supply during the normal overload and fault
conditions. Low-current startup and a low-power standby mode selected from the
secondary circuit completes a
comprehensive suite of features. The series is provided in a five-pin over
molded SIP style package, affording dielectric isolation without compromising
thermal characteristics.- Flyback Operation with Quasi-Resonant Soft Switching for Low Power Dissipation and EMI
- Rugged Avalanche-Rated MOSFET
- Soft drive circuit MOSFET
- Adjustable MOSFET switching speed
- Choice of MOSFET Voltage and rDS(on)
- Full Over-Current Protection (no blanking)
- Under-Voltage Lockout with Hysteresis
- Over-Voltage Protection
- Direct Voltage Feedback
- Low Start-up Current (100μAmax)
- Low-Frequency, Low-Power Standby Operation
- Over molded 5-Pin Package
INTERNAL CIRCUIT OF IC
PCB PART - PRINT SIDE
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