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STM32H757AI 数据表(PDF) 27 Page - STMicroelectronics |
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STM32H757AI 数据表(HTML) 27 Page - STMicroelectronics |
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27 / 251 page  DS12931 Rev 1 27/251 STM32H757xI Functional overview 55 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 STM32H7x7xIT3 sales types (industrial temperature range) the voltage regulator output can be set only to VOS2 or VOS3 in Run mode (VOS1 is 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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