HCG61234 - High Efficiency Fixed Frequency Current Mode Controller for Flyback Converters, 65/100 kHz, DSS, Timer-Based Fault Detection

HCG61234

HCG61234 is a high-efficiency fixed-frequency current-mode controller designed for flyback converters, featuring Dynamic Self-Supply and timer-based fault detection for reliable operation. This controller delivers excellent efficiency and low standby power, making it ideal for consumer electronics, notebooks, and auxiliary power supplies. Its frequency foldback and skip mode optimize light load and standby performance, while internal frequency jittering and ramp compensation enhance stability and reduce component cost. The device includes a 4.0 ms soft-start, adjustable overpower compensation, and latched/autorecovery timer-based overload protection.

• Fixed frequency operation: 65/100 kHz
• Dynamic Self-Supply (DSS) for simplified auxiliary supply design
• Frequency foldback and skip mode for light load efficiency
• Internal frequency jittering for EMI reduction
• 4.0 ms soft-start
• Adjustable overpower compensation
• Latched/autorecovery timer-based overload protection
• High voltage current source with brown-out detection
• Pin-to-pin compatible with NCP12xx families
• Excellent efficiency and low standby power consumption
• Internal ramp compensation for stability
• Versatile latch input for fault detection

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Specifications

• Part Number: HCG61234

Product Data

• Weight : 5.19