1EDI2001AS_15 Datasheet, PDF (35/135 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

EiceDRIVER™ SIL
1EDI2001AS
Functional Description
Events Class C
Generally speaking, Events Class C are error events that do not lead to a change of the operating mode of the
device. The following (non-exhaustive) list of events is comprised within the Event Class C:
• Over Temperature Warning.
• SPI Error.
• Shoot Through Protection error.
• Etc.
SPI Commands
The following SPI commands have an impact on the device’s operating mode. The SPI commands are described
in Chapter 2.4.4.5.
• ENTER_CMODE.
• ENTER_VMODE.
• EXIT_CMODE.
• Setting of bit SCTRL.CLRS (by writing register PCTRL)
Reset Events
A reset sets the device (or part of the device) in its default state. Reset events are described in Chapter 2.4.9.
2.4.5.2.2
Emergency Turn-Off Sequence
The denomination “Emergency Turn-Off Sequence” (ETO) is used to describe the sequence of actions executed
by the output stage of the device when an Event Class A (exception: tristate event), Class B or a Reset Event is
detected.
An ETO sequence is described by the following set of actions:
• A Turn-Off sequence is initiated. In case of DESAT or OCP event, a safe turn-off sequence is initiated. For the
other events, a regular turn-off sequence is initiated.
• The device enters the corresponding OPM mode. As a consequence, the device is disabled.
Once an ETO has been initiated, the device can not be reenabled for a maximum duration consisting of 256 OSC2
clock cycles. Consequently, the user shall wait for this duration before reenabling the device and sending PWM
turn-on command.
2.4.5.2.3 Ready, Disabled, Enabled and Active State
The device is said to be in Ready state in case no reset event is active on the primary chip. When the device is
Ready, signal NRST/RDY is at High level.
When the device is in Disabled State, the PWM turn-on commands are ignored. This means that whatever the
input signal INP is, the output stage (if not tristated) delivers a constant turn-off signal to the IGBT. Unless
otherwise stated, all other functions of the device work normally.
When the device is not in Disabled State, it is said to be in Enabled State. In this case, the PWM signal command
is processed normally (if the output stage is not tristated). Practically, the device is in Enabled State when either
Mode OPM4 or Mode OPM6 is active.
Active State corresponds to the normal operating state of the device. Practically, the device is in Active State when
Mode OPM4 is active.
Datasheet
35
Hardware Description
Rev. 3.1, 2015-07-30