ETAS ES5340.2, Руководство пользователя

Страница: 44 / 120

ES5340.2 Electric Drive Simulation Board -User’s Guide 44
Hardware Description ETAS
3.6.3 Configuration with ES5436.1 to Measure ECU Digital Output Signals
Digital outputs of ECUs are often configured as open emitter or open collector.
In a vehicle, such outputs are connected to small loads.
To measure such digital output signals of an ECU in an HiL setup, the ES5436.1
can be used as load simulation and the ES5340 for measurement.
A schematic diagram for the ECU, the ES5340 and the ES5436.1 is shown in
Fig. 3-9 on page 45.
The ES5436.1 has 48 current channels for currents in the range of 5 mA to 150
mA. These current channels can be combined with the 20 digital inputs of the
ES5340.
Technical Data of the ES5436.1 Power Sources
Tab. 3-1 Technical data of the power sources
When connecting the ES5436.1, observe the following note:
CAUTION!
Before connecting the ES5436.1, read the ES5436.1 User’s Guide.
Output Data
Output current 5 mA to 150 mA
Output voltage Passive circuit
Accuracy +/- 3 mA at 150 mA
Galvanic isolation max. 60 V to ground potential (functional separa-
tion)
Overvoltage protection 60 V abs. max.
Note
In the idle state (non activated load channel, operation mode "disabled") the
power source’s idle state current is ~70
μ
A.
Note
If the external vVBAT < 6 V the power source doesn’t carry any current.
Note
The ES5436.1 use cases "Pull-Up“, "Pull-Down“ and "Bipolar“ ( "Bipolar" for H-
bridge configuration, see "Configuration as H-Bridge" on page 46) can be con-
figured by software.
For this reason, make sure that +VBAT and -VBAT are always connected.