DRV3201-Q1_16 Datasheet, PDF (28/60 Pages) Texas Instruments – DRV3201-Q1 3 Phase Motor Driver-IC for Automotive Safety Applications

DRV3201-Q1
SLVSBD6D – MAY 2012 – REVISED AUGUST 2015
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Device Functional Modes (continued)
7.4.2 Configurable Safety Mode
The DRV3201-Q1 can work in two different safety modes controlled by the external pin CSM, as described in
Table 5. This pin can be read back through SPI register RB0.
CSM
LOW
HIGH
Table 5. Safety Modes
Description
Full safety mode:
All internal protection features are activated.
Configurable safety mode:
Protective actions as selected in configuration register CFG_REG_1 are enabled and they set diagnostic flags, deselected
actions only set diagnostic flags without protective action.
With this mode the device can be used outside the normal operation range but below Absolute Maximum Range (see
Absolute Maximum Ratings) under responsibility of user.
Table 6 defines the protective actions taken on certain error conditions. When the device is in full safety mode,
all internal protection features are activated, and all protective actions listed below are taken if the respective
error condition is detected. When the device is in configurable safety mode (CSM), the error conditions for which
CSM is available, the protective action and ERR pin indication (see Error Indication on ERR Pin) can be
configured with the corresponding bit in CFG1. The diagnostic flags are always set if the respective error
condition is present, regardless of the CSM setting.
Error Condition
VS undervoltage
VS overvoltage
Boost converter
undervoltage
HS VDS error
LS VDS-error
Programmable dead time
window failure
Shoot through protection
violated
SPI error
Configuration data CRC
error
EEPROM data CRC error
Overtemperature first
threshold
Overtemperature second
threshold
LOC error
Table 6. Error Conditions and Protective Actions
Protective Action
Recovery
Selectable Through
CFG_REG_1 in CSM
Switch all gate-driver outputs Flags are cleared with MCU reading
No
to low (active pulldown)
the status register or through
RESET. If the failure remains after
Yes
read out of the register, it is
Yes
immediately be reported again.
Yes
Yes
Enforce programmable dead
Yes
time
Switch high-side and low-
No
side gate-driver outputs of
affected power-stage to low
(active pulldown). If enabled,
enforce dead time to high-
side and low-side.
SPI command is ignored
No
Reported through SPI
No
No
No
Shutdown of device
After thermal recovery device
No
performs power on reset
ERR pin low
No
Error
Indication
ERR Pin
Always
Selectable by
CFG_REG_1
Always
None
None
None
Always
Always
Always
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