Mediatek PumpExpress (PE)

MediaTek is the manufacturer of the Helio and Dimensity chips in many smartphones. They developed a unique fast charging protocol exclusive to MediaTek's own chips - PumpExpress Plus. Among smartphone manufacturers, Sony and Meizu were the early adopters of this charging protocol.

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Charging protocols:

• PE+1.1 provides output power up to 24W. Fixed voltage: 5V, 7V, 9V, 12V at 1.5-2A. No special cable is required. It is backwards compatible with USB BC1.2, PD2.0. Later up to 3A support was provided.

• PE+2.0 uses variable voltage in a range from 5V to 20V (0.5V increment). Up to 3A current. Compatible with MicroUSB cables as well as UsbC. Run cable impedance measurement to prevent cable overheating if the cable is not capable of tolerating high current.

• PE 3.0. Direct battery charge technology. It is based on USB PD. It uses variable voltage 3V-6V (10-20mV per step) and supports 5A+ current (25W max). The protocol is capable of outputting CC (Constant Current) & CV (Constant Voltage. UsbC-UsbC cable.

• PE 4.0. It is based on PD PPS. Supports 5A of current. No proprietary cables are required (UsbC-UsbC). Mediatek also adds under the umbrella of PE 4.0 the possibility to charge a smartphone wirelessly through regular Qi wireless charging as well as proprietary wireless charging standard "Pump Express Wireless".