The new 18W type-c PD 3.0 multi-protocol fast charger can provide more accurate voltage

On April 18, 2019, umc holdings, a leading distributor of semiconductor components for the asia-pacific region, announced the launch of its youshang 18 w type-c PD 3.0 charger solution based on DIODES.

The 18W type-c PD 3.0 multi-protocol fast charger from DIODES, the agency of dailian dayu shang, conforms to PPS specification and is compatible with QC4 and QC4+ protocols to provide more accurate voltage for output.Support iPad Pro PD 60min charge 50%, 150min charge 100%, xiaomi 8 95min charge 100%, full huawei Mate20 Pro 128min.

Picture 1- the charger demonstration board of DIODES based 18W type-c PD3.0

Core technology advantages

This scheme is a complete DIODES scheme: power management + output synchronous rectification + output PD3.0 protocol;

Power management chip: AP39303 USES SOP16 encapsulation and built-in high-voltage switch MOSFET and high voltage 100 v, 700 v "to implement the power primary circuit, high integration of VCC, greatly reduce PCB size and simple layout, its efficiency and EMI countermeasures adopted QR working mode and frequency control to achieve between 22 k to 120 k, the internal use of high pressure to start the pin to make it compatible with X capacitor discharge function low standby power consumption < 35 mw, and have more accurate OCP, OVP, OTP protection function;

Synchronous rectifier chip: APR34709 is packaged with op-8 and has 60V MOSFET with both DCM and QR working modes. The working voltage of ultra-wide VCC is 3.3-16v. Its peripheral circuit only needs 6 components to meet its working needs.

Output PD3.0 protocol: ap43770/1 this protocol chip is certified by USB association, and can be compatible with QC4.0, QC4.0+ and PPS specifications, and can meet the output VBUS control of two MOSFET (n-mosfet or p-mosfet), more accurate OCP, OVP, OTP function, its packaging is only dfn3x3-14.

Picture 2- the block diagram of the charger solution of DIODES based 18W type-c PD3.0

Project specifications

1. Input voltage: 90-264v AC;

2. Output voltage: 5V 3A 9V 2A;

3. Frequency: 47hz-64hz;

4. Standby power consumption < 35mW;

5. Average efficiency: 89%.