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STM32H745II Datasheet(PDF) 28 Page - STMicroelectronics |
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STM32H745II Datasheet(HTML) 28 Page - STMicroelectronics |
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28 / 252 page  Functional overview STM32H745xI/G 28/252 DS12923 Rev 1 3.5.3 Voltage regulator (SMPS step-down converter and LDO) The same voltage regulator supplies the 3 power domains (D1, D2 and D3). D1 and D2 can be independently switched off. Voltage regulator output can be adjusted according to application needs through 6 power supply levels: • Run mode (VOS0 to VOS3) – Scale 0: boosted performance (available only with LDO regulator) – Scale 1: high performance – Scale 2: medium performance and consumption – Scale 3: optimized performance and low-power consumption Note: For STM32H745xxx3 sales types (industrial temperature range) the voltage regulator output can be set only to VOS2 or VOS3 in Run mode (VOS0 and VOS1 are not available for industrial temperature range). • Stop mode (SVOS3 to SVOS5) – Scale 3: peripheral with wakeup from Stop mode capabilities (UART, SPI, I2C, LPTIM) are operational – Scale 4 and 5 where the peripheral with wakeup from Stop mode is disabled The peripheral functionality is disabled but wakeup from Stop mode is possible through GPIO or asynchronous interrupt. 3.5.4 SMPS step-down converter The built-in SMPS step-down converter is a highly power-efficient DC/DC non-linear switching regulator that provides lower power consumption than a conventional voltage regulator (LDO). |
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