Reference designs address USB PD / USB-C battery charging development
Two reference designs from Renesas Electronics are designed to simplify and speed the development of USB Power Delivery (PD3.0) and USB-C battery charging applications such as USB-C computing hubs, power banks, car chargers, SSD enclosures, point of sale (PoS) printers and desktop displays.
The RTK-251-1PowerBank3 and RTK-251-BuckBoostConverter2 are USB-IF PD3.0 certified design kits. The RTK-251-1PowerBank3 board is a three-cell (series connected) Li-ion battery power bank reference design that employs the R9A02G011 USB PD3.0 controller and ISL95538B buck-boost narrow voltage direct charging (NVDC) battery charger. It is for USB-C multi-battery-cell power banks, and includes one USB Type-C port that supports the dual role power (DRP) feature, delivering power in both directions via power source and power sink modes. When the power bank is in sink mode, it requests 5.0, 9.0, 15, or 20V from a USB PD3.0 provider such as an AC adapter. When the power bank is in source mode, the Li-ion battery supplies 5.0 to 20V requested from a PC, tablet, or smartphone. In addition, the RTK-251-1PowerBank3 changes its DRP role based on the remaining battery capacity displayed on the board’s LEDs.
The RTK-251-BuckBoostConverter2 is a DC/DC module that employs the R9A02G011 USB PD3.0 controller and the ISL95338 bidirectional buck-boost voltage regulator. The RTK-251-BuckBoostConverter2 reference design board is for USB-C hubs as part of the USB-PD AC adapter connection. It accepts 19V with 4.73A DC input power and produces USB-PD3.0-compatible VBUS output power. The reference design board supports programmable power supply (PPS) and has two USB Type-C receptacles for VBUS power output.
The RTK-251-1PowerBank3 Reference Design Kit and the RTK-251-BuckBoostConverter2 Reference Design Kit are available now from Renesas Electronics’ distributors.