AP3306, APR340, and AP43771V Ultra-High-Power Density Charger Solution

AP3306, APR340, and AP43771V Ultra-High-Power Density Charger Solution


Diodes Incorporated provides a high-efficiency, small footprint solution for USB PD3.0 chargers

The AP3306, APR340, and AP43771V combination from Diodes Incorporated provide a high-efficiency, small footprint solution for USB PD3.0 chargers. The AP3306 active clamp flyback (ACF) controller uses a non-complimentary high- and low-side control mechanism to achieve leakage energy recycling and zero voltage switching (ZVS) for supreme-efficiency performance and can meet <30 mW standby loss. The APR340 is a secondary-side synchronous-rectification MOSFET driver optimized to work with the AP3306. The AP43771V is a USB Type-C® Power Delivery (PD) 3.0 PPS decoder. It is compliant with both USB PD specification Rev 3.0 V1.1 (TID – 4305) and QC4/4+/QC5 (certification by GRL). The AP43771V (QFN-24) maximizes power usage by using its I²C interface and GPIO pins to facilitate operation in multi-port independent-output voltages where built-in smart-power-sharing firmware is implemented. Based on quick-charger designs to shorten design-to-production cycle time, the AP43771V has 45 W and 65 W single-C and dual-C reference designs for USB PD3.0 PPS.


  • AP3306 ACF controller
    • Supports high-side switcher driver without level-shift circuitry, and non-complimentary high- and low-side control mechanisms to reduce BOM cost and simplify system design
  • AP43771V decoder
    • Supports a cost-effective and flexible program mode:
      • One-time programmable ROM is provided for main firmware
      • Multi-time-programmable ROM is provided for user-configuration data
    • Uses an I²C interface and a built-in smart-power sharing scheme:
      • Supports multiple USB Type-C port-independent voltage-output charging applications (QFN-24) for power-usage optimization
  • APR340 secondary-side synchronous-rectification driver
    • Optimized for operation with AP3306 and supports system output voltage, which can go as low as 2 V — a significant benefit in PPS applications

more information: https://www.diodes.com/part/view/AP3306/

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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