Wireless charging IC (WLC) 15-W transmitter for automotive
applications
Pin information
Table 1
Pin#
WLC1515 pinouts (continued)
WLC1515
Example pin assignment
Description
Pin name
for 15W 3-Coil
MP-A13 transmitter
ASK voltage/current sensing path. IC output for ASK signal
processing.
18
19
20
21
22
ASK_OUT
ASK_DEMOD
PWM_IN1
PWM_IN2
PWM_OUT
Input for ASK signal decoding. Connect external ASK comparator
output to this pin. Short this pin to pin-36 (ASK_SEL).
Inverter gate driver input signal for inverter bank 1. Short this pin to
pin-22. PWM_OUT.
Inverter gate driver input signal for inverter bank 2. Short this pin to
pin-22 PWM_OUT.
Inverter PWM signal output used for the inverter gate drive inputs.
Short this pin to pin 20 (PWM_IN1) and pin 21 (PWN_IN2).
GD_OVR_HB_1
GD_OVR_HB_2
23
24
GPIO1
GPIO2
COIL1_EN
COIL2_EN
Default Coil1_EN / configurable GPIO.
Default Coil2_EN / configurable GPIO.
VDDD 5V LDO output from VIN. Connect a ceramic bypass capacitor
(recommended value 1µF) from this pin to GND close to the IC.
Connect all VDDD pins together.
25
VDDD
26
27
GPIO3
GPIO4
COIL3_EN
LIN_EN
Default Coil3_EN / configurable GPIO.
Configurable GPIO / LIN transceiver enable. Float this pin if it is not
used.
External reset – active low, internally pulled-up (~6kΩ). Float this pin
28
29
30
31
XRES
if it is not used.
2
Used for I C/SWD register access or programming/LIN transceiver
GPIO5
GPIO6
GPIO7
SWD_DAT/LIN_TX
SWD_CLK/LIN_RX
UART_TX
Tx / configurable GPIO.
2
Used for I C/SCL register access or programming/LIN transceiver
Rx / configurable GPIO.
Default UART Tx for debug/configurable GPIO. Float this pin if it is not
used.
Q-factor based foreign object detection (FOD) pre-charge
measurement input for frequency counting. Short this pin to pin 37
(QCOMP1).
Tx coil 1 temperature measurement via thermistor monitoring for
15W MP-A13 application/configurable GPIO. Float this pin if it is not
used.
32
33
Q_COMP_2
GPIO8
TEMP_FB_1
34
35
36
GND
Ground. Connect directly to the EPAD and to ground plane
NFET gate driver output. Float this pin if it is not used.
Input for ASK signal decoding. Short this pin to pin-19 (ASK_DEMOD).
NFET_CTRL_1
NC
ASK_SEL
Q-factor based FOD pre-charge measurement input for peak voltage
detect. Short this pin to pin 32 (QCOMP2).
37
QCOMP_1
Input voltage to buckboost (DC-DC) controller. Connect to
connector’s positive pin. If EMI filter/choke is used after connector
then connect it to output of the EMI filter/choke.
38
BB_IN
Input of feedback voltage of error amplifier of DC-DC bank 1
Connect to the connector positive node between the output current
sense resistor and the VBUS provider NFET.
Negative input of ASK voltage sensing signal input to internal
amplifier.
39
40
VBUS_IN
ASK_N
Positive input of ASK voltage sensing signal input to internal
amplifier.
ASK voltage sensing comparator output. Float this pin if it is not used.
41
42
ASK_P
ASK_TST
Datasheet
7
002-37268 Rev. *B
2023-07-21
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