New Digitally Programmable Synchronous Buck Converter for USB Power

The STPD01 offers high efficiency charging with a wide input and output voltage range, together with a number of protection features

Featuring a synchronous topology for optimum efficiency, the STMicroelectronics STPD01 DC/DC buck converter is a digitally programmable converter for USB Power Delivery (PD) applications up to 60W.

New Digitally Programmable Synchronous Buck Converter

With a wide input-voltage range of 6V to 26.4V, the STPD01 offers flexibility to address a large range of applications such as AC multiport adapters, USB hubs, PC monitors, and smart televisions. The output voltage, set via I2C, can be adjusted from 3V to 20V in 20mV minimum steps to meet PD specifications. The device incorporates an advanced cable-drop compensation solution with an internal voltage-feedback resistor divider, to ensure the load receives the correct voltage unaffected by losses in copper tracks and the attached output cable.

The STPD01 includes extensive protection against over-voltage, over-current, and over-temperature. Also a number of additional built-in features are available, including embedded discharge circuitry, soft-start, under-voltage lockout, and a programmable watchdog timer that help ensure a robust and safe system.

Features of the STPD01 Programmable Buck Converter include:

Input voltage range 6.0 V to 26.4 V
Internal power MOS synch rectification
Internal compensation
I²C bus controlled
High power management capability
V_out settings: 3 V to 20 V with 20 mV (min.) steps
I_out settings: 0.1 A to 3 A with 50 mA steps
Slew rate control (max. 30 mV/µs)
Cable drop compensation
Two programmable switching frequencies
Watchdog timer set by I²C
Configurable interrupt pin and power-on pin
Soft-start
OVP, IPEAK and overtemperature protections
Short-circuit protection and undervoltage lockout

For more information on the STPD01 Programmable Buck Converter for USB, visit the ST website at STMicroelectronics STPD01 product page.

The STMicroelectronics website address is www.st.com
[Reprinted with kind permission from STMicroelectronics - Release Date 19th January, 2022]

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