5.2 Jumper Configuration
This section describes the configuration of main jumpers. You can configure the jumpers according to your
application.
J1 NTC Header
The J1 header is used to verify the thermal foldback function. The NTC pin actually detects the voltage of
external NTC circuit, it can be connected to thermistor(NTC or PTC) divider or NTC_VAR. NTC_VAR is the
output of TPL0102, which is a I
2
C digital potentiometer. If you are sure what type of thermistor to be used on
your system, you can put the thermistor and resistor divider on our EVM board to test the thermal foldback
function. If you can use I
2
C to control the output of TPL0102, you can connect to NTC_VAR.Or you can directly
apply an external voltage to NTC contact pin without any jumper. The thermistor assembled on the EVM is
positive temperature coefficient(PTC).
Figure 5-1. J1 NTC Header
J6 I
2
C MUX
This header expands the I
2
C1 connections of TPS25762/72-Q1: it can connect to GPIO expander, I
2
C
temperature sensor and EEPROM. Since I
2
C bus can support multiple slaves, it is recommended to connect
all pins.
Figure 5-2. J6 I2C MUX
Setup
SLVUC03 – NOVEMBER 2022
TPS25762/72-Q1 EVM User's Guide
5
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