Datasheet

DS12556 Rev 2 37/201
STM32H750VB STM32H750IB STM32H750XB Functional overview
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3.29.1 High-resolution timer (HRTIM1)
The high-resolution timer (HRTIM1) allows generating digital signals with high-accuracy
timings, such as PWM or phase-shifted pulses.
It consists of 6 timers, 1 master and 5 slaves, totaling 10 high-resolution outputs, which can
be coupled by pairs for deadtime insertion. It also features 5 fault inputs for protection
purposes and 10 inputs to handle external events such as current limitation, zero voltage or
zero current switching.
The HRTIM1 timer is made of a digital kernel clocked at 400 MHz The high-resolution is
available on the 10 outputs in all operating modes: variable duty cycle, variable frequency,
and constant ON time.
The slave timers can be combined to control multiswitch complex converters or operate
independently to manage multiple independent converters.
The waveforms are defined by a combination of user-defined timings and external events
such as analog or digital feedbacks signals.
HRTIM1 timer includes options for blanking and filtering out spurious events or faults. It also
offers specific modes and features to offload the CPU: DMA requests, Burst mode
controller, Push-pull and Resonant mode.
It supports many topologies including LLC, Full bridge phase shifted, buck or boost
converters, either in voltage or current mode, as well as lighting application (fluorescent or
LED). It can also be used as a general purpose timer, for instance to achieve high-resolution
PWM-emulated DAC.
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