Diodes, Inc. carries primary side regulation switchers such as the AP3968, which consists of a primary side regulation controller and a high voltage transistor, is specially designed for off-line power supplies within 12W output power. Typical applications include adapter for ADSL and auxiliary supplies. The AP3968MTR-G1 operates at pulse frequency modulation (PFM), and provides accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and secondary control circuitry. It has internal cable compensation function for tight constant voltage regulation. The AP3968MTR-G1 solution has fewer component numbers, smaller size, and lower total cost.
Feature
- Primary Side Control for Eliminating Opto-coupler and Secondary CV/CC Control Circuitry
- Built-in NPN Transistor with 700VCBO
- Low Start-up Current: 0.2μA (Typ.)
- Internal Output Cable Voltage Drop Compensation
- Random Frequency Modulation for Low EMI
- Short Circuit Protection
- Low Total Cost Solution
- Output Power Range (Note 1): AP3968 for 5W Adapter
Applications
- Chargers
- Adapters
- Set Top Boxes
- Auxiliary Supplies
- DVD
- LED Driver
