データシートサーチシステム |
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ACT88320QI-T データシート(PDF) 19 Page - Active-Semi, Inc |
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ACT88320QI-T データシート(HTML) 19 Page - Active-Semi, Inc |
19 / 50 page ACT88320QI-T Rev 2.0, 20-Dec-2017 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi. Copyright © 2017 Active-Semi, Inc 19 RESET Power Sequence Start POWER ON (Active) OVUV Fault Thermal Fault Thermal Shutdown Fault & DIS_OTS = 0 Thermal Fault Cleared SLEEP Clears all registers and defaults to original NVM settings in RESET state VIN_OV or VIN_UV in any state puts the IC in RESET state Example for a typical configuration. Other transitions are possible with factory programmed configurations. DPSLP (Deep Sleep) (DPSLP_EN = 1 & PWREN = 0 & DPSLP MODE = 1) OR (DPSLP_EN = 1 & PWREN = 0 & DPSLP MODE = 0 & DPSLP Bit = 1) PWREN = 1 VIN_NOT_OK UV> VIN > OV SLEEP Bit = 1 & SLEEP_EN = 1 OVUV Fault Retry Timer (100ms) DIS OVUV = 0 & Mask = 0 Clear DPSLP_EN & SLEEP_EN if set to 1 upon entering OVUV Fault State Clear DPSLP_EN & SLEEP_EN if set to 1 upon entering Thermal Fault State VIN_OK UV < VIN < OV SLEEP Bit = 1 & SLEEP_EN = 1 SLEEP Bit = 0 OR SLEEP_EN = 0 Figure 1 PWREN State Machine Special consideration is needed for DPSLP state in with a non-I2C system. When PWREN is first toggled high after power up, the ACT88320 detects the first rising transition of PWREN from 0 to 1 and sets the DPSLP_EN register bit to 1. On the falling transition of PWREN from 1 to 0, DPSLP state is entered. In a con- dition when the system is powered up when PWREN = 1, PWREN must be toggled to 0 and back to 1 to set the DPSLP_EN bit. The next falling PWREN transition puts the IC into the DPSLP state. While in DPSLP mode, if there is a fault condition such as system UV or OV or a thermal fault, the IC resets the DPSLP_EN bit back to 0 when it exits DPSLP mode. This requires PWREN to be toggled high to set the DPSLP_EN to 1 again and then toggled back low to enter DPSLP state again. The IC does not automatically go back into DPSLP state after exiting the DPSLP state due to fault conditions. |
同様の部品番号 - ACT88320QI-T |
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同様の説明 - ACT88320QI-T |
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