Key Product Benefits
Offline PWM controller for low standby adapters
The STCH03 is a quasi-resonant flyback controller with HV start-up cell and a high performance low voltage PWM controller chip in the same package that minimizes power consumption. This PWM controller turns on the primary MOSFET to allow energy to be stored inside the primary winding of the flyback transformer during the ON time. After the primary MOSFET turn-off, the energy is electromagnetically transferred to the secondary winding of the flyback transformer and hence to the secondary side capacitors and load.
Adaptive synchronous rectification controller for flyback converter
The SRK1001 controller is designed for secondary side synchronous rectification (SR) in flyback converters, suitable for operation in QR and mixed CCM/DCM fixed frequency circuits.
Standalone USB PD controller with integrated CC/CV for AC/DC applications
The STUSB4761 addresses USB type-C and Power Delivery provider devices. Thanks to default parameters stored in an internal non-volatile-memory, the STUSB4761 implements up to 5 PDOs in order to negotiate autonomously a Power Delivery contract with a sink without any internal or external software (auto run mode). A CC/CV regulation loop allows a fully regulated power management unit (AC/DC) to be implemented with a minimum BOM cost. Automatic overheating protection mechanism allows to renegotiate power down with the SINK in order to contain and decrease abnormal temperature elevation, protecting the application, the charging device and the environment.
- USB-IF certified
- USB Type-C PD 3.0 references:
- Power Brick EVLSTCH03-45WPD TID: 2071
- PD Controller STUSB4761 TID: 2070
- Energy efficiency meeting all DOE and UE CoC requirements
- Isolated quasi-resonant flyback topology with adaptive synchronous rectification
- Programmable output voltage and current protections
- Safety according to EN60065
- EMI according to EN55022 - Class B
- RoHS compliant