BL4S200 User’s Manual
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3.2.2 High-Current Digital Outputs
The BL4S200 has eight high-current digital outputs, HOUT0–HOUT7, which can each
sink or source up to 2 A. Figure 10 shows a wiring diagram for using the digital outputs in
either a sinking or a sourcing configuration.
Figure 10. BL4S200 High-Current Outputs
All the digital outputs sink and source actively. They can be used as high-side drivers, low-
side drivers, or as an H-bridge driver. When the BL4S200 is first powered up or reset, all
the outputs are disabled, that is, at a high-impedance tristate.
Each bank of four high-current output has its own +K supply, as shown in Table 6. When
wiring the high-current outputs, keep the distance to the power supply as short as possible.
Table 6. BL4S200 High-Current Outputs
High-Current Outputs
+K
x
Connector
HOUT0–HOUT3
K1
J3
HOUT4–HOUT7
K2
J4
For the H bridge, which is shown in Figure 11,
Ka and Kb
should be the same
. This is most
easily accomplished by using outputs from the
same bank on one connector.
Figure 11. H Bridge
+Ka
+Kb
LOAD
A
A
B
B