The STM32F334 makes digital power conversion applications more efficient, thanks to new temperature and voltage compensated hi-res timers with 217ps PWM resolution, 12-bit ADCs with 5 MSPS and ultrafast comparators with 26ns reaction time for increased safety.

This new type of MCU addresses data servers, telecom infrastructure, wireless chargers as well as welding, solar, and lighting applications. In addition to the standard STM32 ecosystem, a hi-res timer cook book,  optimized code snippets and a dedicated DSMPS evaluation board help accelerate the development of highly efficient digital power applications.

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The STM32F3x4 product line is specifically designed to address digital power conversion applications, such as D-SMPS, lighting, welding, inverters for solar systems and wireless chargers.

The main peripherals of the STM32F3x4 are:

• High-resolution timer: 217ps, self-compensated versus power supply and temperature drift.
• Ultra-fast comparator: 26ns from analog input to PWM shut-down
• Ultra-fast 12-bit ADC 5Msps (0.2µs)
• Operational amplifier with 5 built-in gain settings and 1% accuracy

The high resolution timer consists of a bank of 6 timers totalling:

• 10 PWM outputs (can be coupled by pairs)
• 10 external events inputs (Current limitation, Zero Voltage / Zero Current Detection) and 5 fault inputs

The main features of the high resolution timers are:

• 217ps resolution available for all operating modes
  • Variable duty cycle, variable frequency, Transition mode

A number of features allows to unload the CPU

• One DMA channel per timer
• Built-in burst mode controller, topology specific modes: push-pull, resonant.

• Numerous interconnects between timers to
  • Reset/Start adjacent timers
  • Set / Reset / Toggle other outputs
• Transparent high-resolution implementation (equivalent to 4.6GHz timer) for easy programming

Anglia are offering customers a FREE Evaluation board for the STM32F3x4 Microcontrollers from STMicroelectronics, please fill in the form below to request yours now.

Click here for more information or buy from Anglia Live.