DIODES Incorporated PMIC - PMIC - AC DC Converters, Offline Switchers - AP3127KTR-G1 AP3127KTR-G1

The AP3127KTR-G1 is a current mode PWM controller designed for high-performance, low standby power offline flyback converters. It operates with a fixed PWM switching frequency of approximately 65kHz, which can reduce to about 20kHz in no-load or light-load conditions to minimize audible noise. The device features green mode operation to enhance efficiency during middle load conditions and includes frequency dithering to mitigate EMI emissions. This controller incorporates comprehensive protection mechanisms such as cycle-by-cycle current limiting, VCC over-voltage protection, internal over-temperature protection, and overload protection. It also supports secondary side over-voltage protection and under-voltage protection. The AP3127KTR-G1 is packaged in a compact SOT26 format and is fully RoHS compliant, making it suitable for environmentally conscious designs. Applications for this product include quick chargers, switching AC-DC adapters, ATX/BTX auxiliary power supplies, set-top box power supplies, and open frame switching power supplies. Its features and protections make it a reliable choice for engineers looking for efficient and safe power management solutions in their designs.