l99pm62gxp STMicroelectronics, l99pm62gxp Datasheet - Page 35

• Manufacturer Part Number: l99pm62gxp
• Description: Power Management Ic With Lin And High Speed Can
• Manufacturer: STMicroelectronics

L99PM62GXP
3
3.1
3.1.1
3.1.2
Protection and diagnosis
Power supply fail
Over and under-voltage detection on Vs
V
If the supply voltage Vs reaches the over voltage threshold (V
●
●
●
Vs undervoltage
If the supply voltage Vs drops below the under voltage threshold voltage (V
●
●
●
S
overvoltage
Outputs OUTx, RELx and LIN are switched to high impedance state (load protection).
CAN is not disabled. Recovery of outputs when the overvoltage condition disappears is
depending on the setting of VLOCKOUT_EN bit in Control Register 4.
–
–
The over voltage bit is set and can be cleared with a ‘Read and Clear’ command. The
overvoltage bit is removed automatically if VLOCKOUT_EN = 0 and the overvoltage
condition disappears.
Outputs REL1,2 can be excluded from a shutdown in case of overvoltage by SPI
(LSOVUV_ Shutdown_en in CR4)
Outputs OUTx, RELx and LIN are switched to high impedance state (load protection).
CAN is not disabled. Recovery of outputs when the undervoltage condition disappears
is depending on the setting of VLOCKOUT_EN bit.
VLOCKOUT_EN = 1: Outputs are off until read and clear SR3.
VLOCKOUT_EN = 0: Outputs switch on automatically when undervoltage condition
disappears.
The undervoltage bit is set and can be cleared with a ‘Read and Clear’ command. The
undervoltage bit is removed automatically if VLOCKOUT_EN = 0 and the undervoltage
condition disappears
Outputs REL1,2 can be excluded from a shutdown in case of undervoltage by SPI
(LSOVUV_shutdown_en in CR4)
VLOCKOUT_EN = 1: Outputs are off until read and clear SR3.
VLOCKOUT_EN = 0: Outputs switch automatically on when overvoltage condition
disappears.
Doc ID 17639 Rev 3
SOV
Protection and diagnosis
):
SUV
)
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