NCP12400 Overview
Fixed Frequency Current Mode Controller for Flyback Converters NCP12400 The NCP12400 is a new fixed-frequency current-mode controller featuring the Dynamic Self-Supply. This function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during start-up, transients, latch, stand-by etc. This device contains a special HV...
NCP12400 Key Features
- Fixed-Frequency Current-Mode Operation 65 kHz or 100 kHz
- Frequency Foldback then Skip Mode for Maximized Performance
- Timer-Based Overload Protection with Latched (Option A) or
- High-Voltage Current Source with Brown-Out Detection and
- Frequency Modulation for Softened EMI Signature
- Adjustable Overpower Protection Dependant on the Mains Voltage
- Fault Input for Overvoltage and Over Temperature Protection
- VCC Operation up to 28 V, with Overvoltage Detection
- 300/500 mA Source/Sink Drive Peak Current Capability
- 4/10 ms Soft-Start
NCP12400 Applications
- Offline Adapters for Notebooks, LCD, and Printers