NCP1236 Overview
Fixed Frequency Current Mode Controller for Flyback Converters NCP1236 The NCP1236 is a new fixed−frequency current−mode controller featuring Dynamic Self−Supply (DSS). This device is pin−to−pin patible with the previous NCP12xx families. The DSS 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...
NCP1236 Key Features
- 65 kHz or 100 kHz Oscillator Frequency
- Frequency Foldback then Skip Mode for Maximized
- Timer-Based Overload Protection with Latched
- High-voltage Current Source with Brown-Out
- Frequency Modulation for Softened EMI Signature
- Adjustable Overpower pensation
- Latch-off Input for Severe Fault Conditions, Allowing
- VCC Operation up to 28 V, with Overvoltage Detection
- $500 mA Peak Source / Sink Current Drive Capability
- 4.0 ms Soft-Start