ETAS Half-bridges ("PS" Connection)
ES930.1 - User Guide 63
10.4 Control of the Channel Group and its Half-bridges
The Half-bridges are controlled with the "Control PS n" signals. The two Half-
bridges of the channel group are jointly enabled or disabled with the "Enable PS
n/n+1" signal..
10.4.1 Control PS
The "Control PS n" signal of a digital output channel is used to control a Half-
bridge (see chapter
9.1.7 on page 54). The output signal of each one of the dig-
ital output channels is firmly assigned to a Half-bridge (power stage). This
assignment cannot be changed:
10.4.2 Enable PS
The "Enable PS n/n+1" signal allows releasing or blocking one channel group
each, i.e. the two corresponding Half-bridges. The release or blocking of a sin
-
gle Half-bridge (power stage) is not possible. These control signals are
assigned to the Half-bridges, i.e. one channel group each, as pairs:
• a common power stage enable signal for the Half-bridges 1 and 2
• a common power stage enable signal for the Half-bridges 3 and 4
• a common power stage enable signal for the Half-bridges 5 and 6
Start and default values of these control signals can be defined in the configu-
ration software.
Digital Output Channel Assigned Half-bridge (Power Stage)
DO 1 PS 1
DO 2 PS 2
DO 3 PS 3
DO 4 PS 4
DO 5 PS 5
DO 6 PS 6
NOTE
For rapid prototyping applications, the release or blocking of the two Half-
bridges of a channel group with the "Enable PS n/n+1" signals enables a safe
starting and shutting down of the system during the Init and Exit tasks by the
RP model according to the user definition.
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