Digitally Programmable Synchronous Buck Converter Brings Ease and Flexibility to USB Power Delivery

Published  January 20, 2022   0
L Lakshita
STPD01 Programmable Buck Converter USB PD

STMicroelectronics has introduced a new STPD01 DC/DC buck converter that is digitally programmable for USB Power Delivery (PD) applications up to 60W and features a synchronous topology for optimum efficiency. This new device with a wide input-voltage range of 6V to 26.4V, offers flexibility to address applications such as AC multiport adapters, USB hubs, PC monitors, and smart televisions. 

This converter incorporates cable-drop compensation with an internal voltage-feedback resistor divider to ensure that the load receives the correct voltage unaffected by losses in copper tracks and the attached output cable. Moreover, the output voltage, set via I2C, can be adjusted from 3V to 20V in 20mV minimum steps to meet PD specifications.

In addition, the built-in features of the STPD01 converter include embedded discharge circuitry, soft-start, under-voltage lockout, and a programmable watchdog timer that help ensure a robust and safe system. The company has launched the STEVAL-2STPD01 USB Type-C Power Delivery dual-port adapter kit, to accelerate the development of solutions based on the STPD01.

The STPD01 DC/DC buck converter is now in production, packaged in QFN24L measuring 3mm x 4mm, and priced at $1.58 for orders of 500 pieces.