♧ STM32F3 > F334 Digital Power

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BASIC4MCU | ♧ STM32F3 | ◆F3x4 Digital Power | F334 Digital Power

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작성자 master 작성일2018-02-19 17:44 조회1,500회 댓글0건

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STM32F3 Series  


STM32 F3 series of mixed-signal MCUs with DSP and FPU instructions

The STM32 F3 series combines a 32-bit ARM® Cortex®-M4  core (with FPU and DSP instructions) running at 72 MHz with a high number of integrated analog peripherals leading to cost reduction at application level and simplifying application design, including:

  • Ultra-fast comparators (25 ns)
  • Op-amp with programmable gain
  • 12-bit DACs
  • Ultra-fast 12-bit ADCs with 5 MSPS (Million Samples Per Second) per channel (up to 18 MSPS in Interleaved mode)
  • Precise 16-bit sigma-delta ADCs (21 channels)
  • Core Coupled Memory SRAM (Routine Booster), a specific memory architecture boosting time-critical routines, accelerating the performance by 43%
  • 144 MHz Advanced 16-bit pulse-width modulation timer (resolution < 7 ns) for control applications
  • High resolution timer (217 picoseconds), self-compensated vs power supply and temperature drift

A flexible interconnect matrix allows autonomous communication between peripherals and saves CPU resources and power consumption.

A high degree of compatibility with STM32 F0 series guarantees outstanding efficiency when designing derivatives of applications at different performance levels.

The STM32 F3 series consists of:

  • The STM32F301, STM32F302, STM32F303 general-purpose product lines ranging from a basic, cost-efficient peripheral set, up to more performance and analog functions able to manage up to triple FOC motor control,
  • The STM32F334 with high-resolution timer (217 picoseconds) and complex waveform builder plus event handler (HRTIM) for digital power conversion, such as digital switched-mode power supplies, lighting, welding, solar and wireless charging,
  • The STM32F373, with 16-bit sigma-delta ADC and
    7 built-in gains for high-precision measurements in applications such as biometric sensors or smart metering,
  • The STM32F3x8 line, supporting 1.8 volt operation

Package options are LQPF48/64/100, UFBGA100, WLCSP100/66/49, UQFN32 for the devices ranging now from
16 up to 512 Kbytes of Flash memory.
Temperature range from -40 to 85 ° C or from -40 to 105 ° C (with a junction temperature of 125 ° C).

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STM32F334 Digital Power 


The STM32F3x4 product line is specifically addressing 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 totaling:

  • 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 

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