HV MCUs streamline USB-C transition

In response to demand for high voltage (HV) microcontrollers for use with fast-charging protocols, Infineon has introduced the PMG1-B1 PD microcontroller to complement its EZ-PD PMG1 family of HV microcontrollers with USB-C power delivery (PD).

The PMG1-B1 PD is a single-chip which integrates a USB-C PD controller, a buck-boost battery charge controller, high voltage protection circuitry, and a microcontroller. It targets battery-powered applications for a range of portable devices including smart home appliances, power tools and personal care products.

The PMG1-B1 PD MCU, which simplifies USB-C PD integration in battery-powered systems for OEMs, explained Ganesh Subramaniam, senior vice president and general manager of wired connectivity solutions at Infineon. The level of integration enables USB-C PD connectivity, battery charging, high voltage protection and MCU functions in a single chip.

The device is USB PD 3.1-certified and based on Infineon’s EZ-PD stack, ensuring compliance and interoperability with the latest USB-C and PD specifications. It combines a USB-C PD controller, a buck-boost battery charge controller, a 32-bit Arm Cortex-M0 processor with a 128kbyte flash memory MCU and a range of analogue and digital peripherals, such as timers, UART, SPI, I²C interfaces and PWMs. The PMG1-B1 integrates other HV circuitry, such as V Bus-powered regulators, FET gate drivers and advanced fault protection circuitry, including over-voltage, over-current protection and V Bus to CC short-circuit protection.

The PMG1-B1 PD MCU supports a wide input voltage range of 4.0 to 24V with 40V tolerance and programmable switching frequency (150 to 600kHz) to deliver up to 100W (20V, 5A) power to the USB-C port. This enables the charging of two- to five-cell batteries. The integration means that the MCU saves space and also reduces the bill of materials.

Infineon also offers the Modus Toolbox firmware development environment to support development of applications implementing the MCU. A board support package and EZ-PD PMG1 software development kit are also available.

The EZ-PD PMG1-B1 high voltage MCU with USB-C PD is offered in tape and reel or tray packaging options. Both variants are available in a VQFN-48 package and can be ordered immediately. 

Infineon will exhibit the EZ-PD PMG1-B1 MCU at Embedded World (14 to 16 March) in Nuremberg, Hall 41-138.


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