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The STM32F334 boosts digital power conversion

The STM32F334 product line specifically addresses digital power conversion applications, such as D‑SMPS, lighting, welding, inverters for

solar systems and wireless chargers, thanks to its agile high‑resolution timer (HRTIM) providing 217 ps resolution on all operating modes with

embedded powerful waveform generator and event handler. A complete ecosystem has been designed to ease digital power conversion based

on STM32F334 devices.

STM32F334 PORTFOLIO

Flash memory size / RAM size (bytes)

32-pin QFN/LQFP

64-pin LQFP

48-pin LQFP

49-pin CSP

64 K / 16 K

STM32F334K8

STM32F334R8

STM32F334C8

16 K / 16 K

STM32F334K4

STM32F334C4

32 K / 16 K

STM32F334K6

STM32F334R6

STM32F334C6

Pin count

Developing with the STM32F334 lets you manage complex PWM waveforms and handle numerous external events thanks to:

A high‑resolution timer cookbook

(AN4539), a dedicated Discovery

kit (32F3348DISCOVERY) plus and

several dedicated D‑SMPS evaluation

board (ex: STEVAL‑ISA147V3 and

STEVAL‑ISA172V2) help accelerate

application development.

High-resolution timer with waveform builder and event handler (HRTIM)

•

217 ps high resolution (4.6 GHz equivalent) guaranteed on all channels vs voltage,

temperature or manufacturing deviations

•

High resolution on all channels and any timing

•

10‑channel timer made of 6 timings units that can be cross‑coupled or work

independently

•

Advanced PWM waveform generation with minimized software

•

Smart functions, such as a hardware burst mode controller

•

One DMA channel per timer

•

One parameter modification can change multiple events (timer chaining)

•

Complex event management

•

10 external events inputs and 5 fault inputs

•

Numerous interconnects

High-speed ADCs for precise and accurate control

•

12‑bit SAR – 5 MSPS (Million Samples Per Second), single‑ended and differential inputs

•

Sampling time down to 21 ns

•

Multiple triggers for PWM

Built-in analog peripherals for signal conditioning and protection

•

Ultra‑fast comparators (25 ns)

•

12‑bit digital‑to‑analog converter (DAC)