1EDI2002AS_15 Datasheet, PDF (78/147 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

EiceDRIVER™ SIL
1EDI2002AS
Protection and Diagnostics
3.5.7 OCP Supervision Level 3
The OCP Supervision functionality is summarized in Table 3-18:
Table 3-18 OCP Supervision Level 3 Overview
Parameter
Short Description
Function
Supervision of the OCP functionality.
Periodicity
On Request.
Action in case of failure event N.a.
Programmability
No
In-System Testability
No
The purpose of the OCP Supervision Level 3 function is to verify that the OCP feature is operational over the whole
life time of the application. Since the OCP supervision is intrusive, it is intended to be executed when the device
is in Mode OPM5 and OPM6 (e.g. after power-up during the initialization phase). The main goal of this mechanism
is to generate artificially an OCP error, to verify that it is recognized by the driver and that an error notification is
correctly issued to the primary logic.
When this function is triggered, the driver enters a special mode where here the signal input of both comparators
is internally pulled up above their respective threshold voltages (see Figure 3-4). When the device enters OPM6,
independently from the PWM command, an OCP error is generated, with the corresponding actions being
triggered by the device.
The INP signal is not issued at the output stage.
Note: When using OCP supervision Level 3, bit field SSTTOF.STVAL must be programmed to 0_H
3.5.8
Power Supply Monitoring Supervision
The Power Supply Monitoring Supervision monitoring functionality is summarized in Table 3-19:
Table 3-19 Power Supply Monitoring Supervision Overview
Parameter
Short Description
Function
Supervision of the Power Supply Monitoring Mechanisms.
Periodicity
On Request.
Action in case of event
N.a.
Programmability
No
In-System Testability
No
The purpose of this supervision function is to verify that the Power Supply Monitoring functions (UVLO2, OVLO2,
UVLO3, OVLO3) are operational over the whole life time of the application. Since this supervision is intrusive, it is
intended to be executed when the device is in Mode OPM5 (e.g. after power-up during the initialization phase).
The main goal of this mechanism is to generate artificially a power supply monitoring error, in order to verify that
it is recognized by the driver and that an error notification is correctly issued to the primary logic.
When this function is triggered, the supervision mechanism of the power supply addressed by the command is
activated. The internal threshold of the comparator delivers a “dummy” error, with the corresponding actions being
triggered by the driver.
The supervision of UVLO1 is not supported by the device.
Datasheet
78
Hardware Description
Rev. 3.1, 2015-07-30