Table of Contents
Advertisement
WLC1150 MP-A2 50-W wireless power transmitter
(REF_WLC_TX50W_N1) user guide
WLC1150 wireless power transmitter system design
3.1
REF_WLC_TX50W_N1 MP-A2 50W power transmitter board
The
REF_WLC_TX50W_N1
power transfer system. The transmitter board architecture is shown in
OPTIGA
Trust
Figure 4
REF_WLC_TX50W_N1
The key features of the reference board are as follows:
Qi 1.3.2 compatible
1.
Robust ASK and FSK in-band communication between transmitter and receiver
2.
Integrated foreign object detection based on system parameters such as Q-factor and power loss
3.
Type-C PD Input with PD compliance
4.
Wide input voltage ranges from 4.5 V to 24 V
5.
Integrated buck converter gate drive and control, operating at a switching frequency of 400 kHz
6.
Integrated gate drive for full-bridge inverter operating range of 110 kHz -145 kHz switching frequency
7.
MP-A2 coil with variable inverter frequency and duty control
8.
Peak efficiency of greater than 83% at full load of 15 W with WRM483265-10F5-12V-G
9.
Peak efficiency of greater than 89% at full load of 50 W with REF_WLC_RX50W board
10.
The reference board contains the following key sections:
1. Input connector – The Tx board supports two sources of input power (USB PD and DC input) to support
different use cases. The board can be powered using a USB-C power adapter over the USB Type-C connector
User guide
MP-A2 50-W transmitter board implements the power stage and control of wireless
Fan Regulator
FAN
Gate Signals
WLC1150
Status LED
PWM
LED1
Logic
power transmitter reference board architecture
Figure
INVERTER STAGE
Voltage, current
feedback
NTC
Feedback
10
4.
COIL-SNS
Cr
Lr
PTx Coil
(MP-A2)
ASK
Demodulator
Circuit
Q-Estimate
Circuit
002-36393 Rev. *B
2023-02-06
Advertisement
Table of Contents
