Texas Instruments bq50002 User Manual page 5

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4.2.15 TP15 – BP3
Output of 3-V LDO.
4.2.16 TP16 – TANK
Coil signal at junction between transmitter coil and resonant capacitors.
4.2.17 TP17 – PGND
Return for SW2.
4.2.18 TP18 – PWM1/CLK
Input to control half-bridge MOSFETs connected to SW1 when PWM_CTRL is high. The operating
frequency/pulse width changes up or down depending on every rising edge of this periodic signal when
PWM_CTRL is low.
4.2.19 TP19 – PWM2/UPDN
Input to control half-bridge MOSFETs connected to SW2 when PWM_CTRL is high. Increase or decrease
power transfer when PWM_CTRL is low.
4.2.20 TP20 – CSO
Output of the current sense amplifier.
4.2.21 TP21 – DMOUT1
Demodulated 2-kHz bit stream from demodulation channel 1.
4.2.22 TP22 – DMOUT2
Demodulated 2-kHz bit stream from demodulation channel 2.
4.2.23 TP23 – BUZZ
DC output when power transfer is started. Can be used to drive a DC style buzzer or LED. See data sheet
for more information.
4.2.24 TP24 – LED_B
Status indication, typically RED.
4.2.25 TP25 – LED_A
Status indication, typically GREEN.
4.2.26 TP26 – LED_C
Status indication, typically ORANGE.
4.2.27 TP27 – LED_MODE
LED mode selection.
4.2.28 TP28 – T_SENSE
Temperature sensing for safety shutdown.
SLVUAJ7 – October 2015
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Connector and Test Point Descriptions
bq50002 Wireless Power TX EVM
5