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The STM32G4x4 Hi-resolution line specifically addresses digital power conversion applications, such as D-SMPS, lighting, welding, inverters for solar systems and wireless chargers.

The main peripherals of the STM32G4x4 are:

  • High-resolution timer: 184 ps, self-compensated versus power supply and temperature drift
  • 5x ultra-fast 12-bit ADCs (4 Msamples/s)
  • 7x 12-bit DACs (15 Msamples/s)
  • 7x ultra-fast comparators (17 nanoseconds)
  • 6x op amps with programmable gain
  • ART, CCM SRAM, and mathematical accelerators
  • Dual-bank Flash memory

The high-resolution timer consists of a bank of 7 timers totaling:

  • 12 PWM outputs (can be coupled by pairs)
  • 10 external events inputs (current limitation, zero voltage / zero current detection, etc.) and 6 fault inputs

The main features of the high-resolution timers are:

  • 184 ps resolution available for all operating modes
    • Variable duty cycle, variable frequency, and transition mode
  • A number of features enable unloading the CPU
    • Valley skipping and slope compensation
    • One DMA channel per timer
    • Built-in burst mode controller and topology specific modes: push-pull and resonant.
  • Numerous interconnects between timers to:
    • Reset/Start adjacent timers
    • Set / Reset / Toggle other outputs
  • Transparent high-resolution implementation (equivalent to 4.6 GHz timer) for easy programming 

 


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