PWM Controller for Programmable Power Converter (USBPD)

The RT7786GxV series is specifically designed to work with controllers, such as RT7207, so as to provide a total solution for the USB PD or the programmable power adapter. The RT7786GxV is able to achieve the high efficiency performance, meet safety standards, and consume low standby power, which is normally less than 30mW in a 5V standby condition.

The RT7786GxV offers several innovative features in order to provide a solution having the wide-range output voltages. By using the DMAG pin, the RT7786GxV senses output voltages to adjust the loop gain for system stability, to adjust the output over-voltage protection threshold voltage for external device protection, and to adjust the current limit to meet Limited Power Source (LPS) safety requirements.

The RT7786GxV is also equipped with comprehensive protection features, including brown-in/brown-out protection, VDD over-voltage protection (VDD OVP), output over-voltage/under-voltage protection (Output OVP/UVP), secondary rectifier short-circuit protection (SRSP), and external over-temperature protection (External OTP). For an application with constant output power regulation, a resistor connected to CS pin can be used to achieve the accurate line compensation across the universal input voltage range. The RT7786GxV also provides various features to protect against failures occurring at the secondary-side component, such as the RT7207 or a shunt regulator.

The RT7786GxV and the RT7207 can be used together to realize a robust and safe design preventing all potential fault scenarios, due to versatile and unknown connections of various devices, cables, plugs and receptacles.