1EDI2001AS_15 Datasheet, PDF (61/135 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

3.3
Protection Functions: Category B
EiceDRIVER™ SIL
1EDI2001AS
Protection and Diagnostics
3.3.1 Power Supply Voltage Monitoring
The Power Supply Voltage Monitoring functionality is summarized in Table 3-6:
Table 3-6 Power Supply Voltage Monitoring Overview
Parameter
Short Description
Function
Periodicity
Monitoring of V_CC1, V_CC2, V_EE2.
Continuous.
Action in case of failure event
1. Emergency (Regular) Turn-off Sequence.
2. Error Flag PER.RST1 (UVLO1) or SER.UVLO2ER or OVLO2ER or
UVLO3ER or OVLO3ER) is set.
3. Assertion of signal NRST/RDY (UVLO1 only) or NFLTB.
Programmability
No.
In-System Testability
Yes (see Chapter 3.5.8).
In order to ensure a correct switching of the IGBT, the device supports an undervoltage lockout (UVLO) function
for V_CC1, V_CC2, V_EE2, and an overvoltage lockout (OVLO) function for V_CC2 and V_EE2 (Figure 3-5).
VOVLO 2H
VOVLO 2 L
VUVLO 2H
VUVLO 2 L
OVLO2
Valid VCC2 range to
enable the device
UVLO2
VUVLO 1H
VUVLO 1 L
Valid VCC1 range to
enable the device
UVLO1
0V
VOVLO 3H
VOVLO 3 L
VUVLO 3H
VUVLO 3 L
OVLO3
Valid VEE2 range to
enable the device
UVLO3
Figure 3-5 Power Supply Supervision Function
Datasheet
61
Hardware Description
Valid VCC2
operating range
Valid VCC1
operating range
Valid VEE2
operating range
Rev. 3.1, 2015-07-30