The RTK-251-1PowerBank3 and RTK-251-BuckBoostConverter2 are USB-IF PD3.0 certified design kits and represent the first in a new series of reference designs for applications implementing the USB Type-C™ data and power connection standard.
The RTK-251-1PowerBank3 board is a reference design for a 3-cell (serial-connected) lithium-ion battery power bank that utilizes the R9A02G011 USB PD3.0 controller and the ISL95538B NVDC direct-charge battery charger. Ideal for USB-C multi-cell battery power banks, the reference design board includes a USB Type-C port that supports Dual Role Power (DRP), supplying power in both directions via power source and power sink modes. When the power bank is in sink mode, it draws 5V, 9V, 15V, or 20V from a USB PD3.0 source, such as an AC adapter. When the power bank is in source mode, the lithium-ion battery supplies 5V to 20V as requested from a PC, tablet, or smartphone. Additionally, the RTK-251-1PowerBank3 switches its Discharge Protection (DRP) function based on the remaining battery capacity, which is displayed on the board's LEDs.
The RTK-251-BuckBoostConverter2 is a DC/DC module that uses the R9A02G011 USB PD3.0 controller and the ISL95338 bidirectional boost voltage regulator. The RTK-251-BuckBoostConverter2 reference design board is ideal for USB-C hubs as part of the USB-PD AC adapter connection. It accepts 19V with an input power of 4.73A DC and produces a USB-PD3.0 compatible VBUS power output. The reference design board is compatible with the programmable power supply (PPS) and has two USB Type-C receptacles for VBUS power output.
Key Features of the RTK-251-1PowerBank3 Reference Design Kit:
The 1-port USB-PD power bank reference design board includes:
R9A02G011 power supply controller supporting dual-role operation;
ISL95538B buck-boost battery charger for up to 4 cells (default setting is 3 cells);
Type-C port supporting PD3.0 with PPS x1 and DRP with bypass mode;
Supports OVP, OCP, OTP, and UVLO protections
; Supports USB-C authentication;
SDK sample code and parameter settings configured via the Renesas USB Power Delivery Controller Flash ROM Image Generator software tool.
Key Features of the RTK-251-BuckBoostConverter2 Reference Design Kit:
The 2-port DC/DC module reference design board includes:
Two R9A02G011 power supply controllers;
DC/DC . DC: For 3V, 5V, and PD output = ISL95338 x2
buck-boost voltage regulators
Type-C port supporting PD3.0 x2
12V~19V for DC IN
Supports PD output voltage
Corrected = 5V, 9V, 15V, 20V and additional user configuration 3 PDOs
PPS = 20V Programmable (3.3V to 21V)
Supports USB-C authentication
The SDK sample code and parameter settings were configured via the Renesas USB Power Delivery Controller Flash ROM Image Generator software tool
