Type-C
phone
+
±
13.5 V,
3 A
General Configuration and Description
5
SLVUBE2A – April 2018 – Revised May 2019
Copyright © 2018–2019, Texas Instruments Incorporated
TPS25830-Q1 Evaluation Module
3.2
Adjusting the Switching Frequency
If other frequencies are desired, within the frequency range of 400 kHz to 2.2 MHz, the R
t
resistor (R11)
value can be changed. Consult the datasheet for proper selection of the R
t
resistor (R11). Change the
inductor (L1) and the total output capacitance for proper control loop operation.
The RT/SYNC pin can also be used to synchronize the internal oscillator to an external clock. The
TPS25830EVMQ1-040 allows users to synchronize the internal oscillator to both Lo-Z clock source and
Hi-Z clock source by configuring R11, R13, and C13. Refer to the datasheet for detailed information.
3.3
Adjusting the Current Limit Value
If other current limit values are desired, the R
l
resistor (R14) value can be changed. Consult the datasheet
for proper selection of the R
l
resistor (R14).
3.4
Adjusting the Cable Compensation Value
If other cable compensation values are desired, the R
m
resistor (R15) value can be changed. Consult the
datasheet for proper selection of the R
m
resistor (R15).
3.5
Test Setup
shows a typical test setup for charging the USB Type-C device. Connect J1 to the 13.5-V power
supply. Connect USB Type-C device to J2 connector. Shunts do not need to be installed on J4 or J5.
Figure 2. EVM Setup for Charging USB Type-C™ Device