參數(shù)資料
型號(hào)： L99PM62XP
廠商： STMICROELECTRONICS
元件分類： 電源管理
英文描述： 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： ROHS COMPLIANT, POWERSSO-36
文件頁(yè)數(shù)： 32/98頁(yè)
文件大?。?/td> 1117K
代理商： L99PM62XP
Protection and diagnosis
L99PM62XP
Doc ID 16363 Rev 2
The low-side drivers switch off in case of:
●
Vs over and undervoltage
●
Over current
●
Overtemperature with pre warning
In case of overload or overtemperature (TSD1) condition, the drivers switches off. The
according status bit is latched and can be read and optionally cleared by SPI. The drivers
remain off until the status is cleared.
In case Vs over/undervoltage condition, the drivers is switched off. The according status bit
is latched and can be read and optionally cleared by SPI. If the Vlockout bit (Control
Register 4) is set to ‘1’ the drivers remain off until the status is cleared. If the Vlockout bit is
set to ‘0’ the drivers is switched on automatically if the error condition disappears.
With the LSOVUV_shutdown_en bit (Control Register 4) the drivers can be excluded from a
switch off in case of Vs over/undervoltage. If the bit is set to ‘1’ the driver switchs off,
otherwise the drivers remain on.
3.5
SPI diagnosis
Digital diagnosis features are provided by SPI (for details please refer to Section 6.2: SPI
●
V1 reset threshold programmable
●
Overtemperature including. pre warning
●
Open-load separately for each output stage except REL1/REL2
●
Overload status separately for each output stage
●
Vs-supply over/under voltage
●
V1 and V2 fail bit
●
V2 output short to GND
●
Status of the WU1 to 3
●
Wake-up sources (CAN, LIN, SPI, Timer, WU1…3)
●
chip reset bit (start from power-on reset)
●
Number of unsuccessful V1 restarts after thermal shutdown
●
Number of sequential watchdog failures
●
LIN diagnosis (permanent recessive/dominant, dominant TxD)
●
CAN diagnosis (permanent recessive/dominant, dominant TxD, recessive RXD)
●
Device State (wake-up from V1 standby or VBAT standby)
●
Forced VBAT standby after WD-fail, forced VBAT standby after overtemperature
●
Watchdog timer state (diagnosis of watchdog)
●
Fail-safe status
●
SPI communication error
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