PL3378C Accurate CC/CV Primary Side PWM Power Switch Datasheet

PublishTime： 2024-02-26 Manufacturer： PMICRO Type： Datasheet Language： English

●Product Description
■PL3378C is a high efficiency Primary Side Regulator and highly integrated PWM Power Switch for AC/DC power supply applications. It simplifies conventional CC/CV charger/adaptor designs by eliminating the opto-coupler and secondary control circuitry. Constant output voltage and current regulation is realized.
■Multi-mode operations are utilized to achieve low standby power, high efficiency and audio & noise free. PL3378C operates in PFM mode at large load condition, with the load becomes medium or light, the chip operates in Green mode to achieve high efficiency.
■PL3378C also offers rich protection features including Cycle-by-Cycle peak current limiting, UVLO, OTP, load OVP, and VDD over voltage.
●Key Features
■Built-in Integrated Power BJT
■Accurate Constant Current Regulation at Universal AC input
■Eliminates Opto-coupler and all Secondary CC/CV Control Circuitry
■Built-in Line Compensation for Tighter CC/CV Regulation
■Built-in Compensation for Transformer Inductance Tolerances
■Adjustable Output Cable Compensation
■Adaptive Multi-mode PFM Control for Improving Efficiency
■Low Start-up Current
■Built-in Leading Edge Blanking (LEB)
■Cycle-by-Cycle Current Limiting
■VDD Under Voltage Lockout and VDD over voltage protection
■Built-in Short Circuit Protection and Output Overvoltage Protection
■Over temperature protection

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