1EDI2002AS_15 Datasheet, PDF (34/147 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

2.4.5 Operating Modes
EiceDRIVER™ SIL
1EDI2002AS
Functional Description
2.4.5.1 General Operation
At any time, the driver can be in one out of seven possible operating modes:
• OPM0: Default Mode (default after reset, device is disabled).
• OPM1: Error Mode (reached after Event Class B, device is disabled).
• OPM2: Configuration Mode (device is disabled, configuration of the device can be modified).
• OPM3: Configured Mode (device is configured and disabled).
• OPM4: Active Mode (normal operation).
• OPM5: Verification mode (intrusive diagnostic functions can be triggered).
• OPM6: Weak active mode (the device can be turned on but with restrictions)
The current active mode of the device is given by bit field SSTAT.OPM.
The concept of the device is based on the following general ideas:
• The driver can only switch the IGBT on when OPM4 mode is active (exception: weak-turn on in OPM6).
• Starting from Mode OPM0 or OPM1, the Active Mode OPM4 can only be activated through a dedicated SPI
command sequence and the activation of the hardware signal EN/FEN. As a result, the probability that the
device goes to OPM4 mode due to random signals is negligible.
• Differentiations of errors: different classes of errors are defined, leading to different behavior of the device.
The state diagram for the operating modes is given in Figure 2-11:
Event Class B
All Reset Events
OPM0
Default
Event Class B
CLRS set
OPM1
Default
Reset Event
OPM2
Configuration
Reset Event
All Event Class B
Event Class B
Reset Event
Event Class B
Reset Event
OPM5
Verification
Event Class A
EN Valid Transition
OPM6
Weak Active
OPM3
Configured
Event Class A
EN Valid Transition
OPM4
Active
Event Class B
Reset Event
Event Class B
Reset Event
Figure 2-11 Operating Modes State Diagram
Datasheet
34
Hardware Description
Rev. 3.1, 2015-07-30