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+. 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, PD 2.0. 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 USB-C. Run a 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). USB-C - USB-C cable.

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