7.2.8 Bridge ISNS routing
Bridge ISNS_P and ISNS_N tracks routed closely together for an accurate measurement.
Figure 56. Bridge ISNS routing
7.2.9 Gate drivers routing
Bridge gate drivers routed by pair from STWBC2 to bridge MOSFETs.
7.2.10 DC-DC short circuit
The firmware can bypass the DC-DC boost circuit when the input voltage is high enough, which improves the
efficiency of the device. Q404 shorts the Vin directly to Vbridge, the bypass route can be seen below.
Figure 57. DC-DC short path through Q404
7.2.11 Q factor driver
Q201 must be placed close to STWBC2. C415 and Q406 shall also be close to STWBC2.
UM3286
Designing a wireless power transmitter based on STEVAL-WBC2TX70 evaluation board
UM3286 - Rev 1
page 71/84
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