User guide

Figure 44 Test environment
6.3.4 Measurements
WCT_MP is compatible with low power RX and medium power RX. With low power RX, WCT_MP
runs normally under half bridge. When medium power RX is put on WCT_MP, full bridge mode of TX is
enabled. The operational mode of TX can be controlled by controlling PWM1 and PWM2. These are the
examples for measuring signals on the board.
1. Measure the signals when the TX board works under analog ping and digital ping.
Ch1: PWM1 Ch2: PWM2
Ch4: Coil current
Figure 45 Analog ping Figure 46 Digital ping
2. MP TX can work under different control mode with different load and RX.
Ch1: PWM1 Ch2: PWM2
Ch3: RX bus voltage Ch4: Coil current
WCT1012 15W Single Coil TX V3.0 Reference Design System User’s Guide, Rev. 0, 09/2015
Freescale Semiconductor 31