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KP421
KP421 Adaptive Current Ripple Cancellation Controller KP421 is a current ripple cancellation chip. Coupled with an external MOSFET, it can eliminate the 100/120Hz frequency current ripple generated by the preceding LED driver and achieve flicker-free operation. KP421 integrates an adaptive current adjustment function, minimizing power loss while achieving ripple cancellation. Its control algorithm ensures good steady-state and dynamic performance and is compatible with TRIAC dimming. KP421 integrates comprehensive protection functions to ensure safe and reliable system operation, such as: LED short-circuit protection, overcurrent protection, open-circuit protection, and overtemperature protection.
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- Product Description
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- Commodity name: KP421
- 封装: SOT23-6
- 品牌: Biyi Microelectronics
KP421 Adaptive Current Ripple Cancellation Controller KP421 is a current ripple cancellation chip. Coupled with an external MOSFET, it can eliminate the 100/120Hz frequency current ripple generated by the preceding LED driver and achieve flicker-free operation. KP421 integrates an adaptive current adjustment function, minimizing power loss while achieving ripple cancellation. Its control algorithm ensures good steady-state and dynamic performance and is compatible with TRIAC dimming. KP421 integrates comprehensive protection functions to ensure safe and reliable system operation, such as: LED short-circuit protection, overcurrent protection, open-circuit protection, and overtemperature protection.
Main Features
• Suitable for high current ripple constant current applications
• Built-in 650V high-voltage self-powered circuit
• Built-in loop compensation, fast response
• Compatible with thyristor dimming
• Fast on/off without overshoot
• Surge current limiting
• LED short circuit protection
• OTP over temperature protection
• SOT23-6 package
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