STM32G4x4

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
• Up to 3x CAN FD
• USB 2.0 full-speed data interface (device)
• USB Type-C™ and power delivery controller (UCPD) 

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