Texas Instruments LP8556TM-Evaluation module LP8556TM-EVM/NOPB LP8556TM-EVM/NOPB 数据表
产品代码
LP8556TM-EVM/NOPB
Setup
4
LP8556TM-
EVM User’s Guide
August 2012
2.
Setup
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set up
and use the LP8556TM-EVM. For a quicker way to enabling the LEDs refer to the LP8556TM-EVM Quick
Start document.
and use the LP8556TM-EVM. For a quicker way to enabling the LEDs refer to the LP8556TM-EVM Quick
Start document.
2.1. Input / Output Connector Description
VIN_B
– Input is the power input terminal for the boost converter. The terminal provides a power (Vbat)
connection to allow the user to attach the EVM to a power supply via a cable assembly with banana plugs.
VIN
VIN
– Input is the alternative power input terminal for the boost converter. The terminal provides a power
(Vbat) connection to allow the user to attach the EVM to a power supply via a cable assembly with SMA
connectors.
EN/VDDIO
connectors.
EN/VDDIO
– Input is the power input terminal for the LED driver I/O circuitry. The terminal provides a power
(VDDIO) connection to allow the user to attach the EVM to a power supply via a cable assembly with banana
plugs.
GND
plugs.
GND
– Input is the power input terminal for the boost converter. The terminal provides a common ground
(GND) connection to allow the user to attach the EVM to a power supply via a cable assembly with banana
plugs.
P1
plugs.
P1
– VIN Input is another alternative power input terminal or a test point for the boost converter input.
P2
– Jumper is a place for connecting the VDD pin directly to the boost input (VIN).
P3
– VDD Input is a power input terminal for the internal LDO of the LED driver.
P4
– EN/VDDIO Input is another alternative power input terminal or a test point for the LED driver I/O
circuitry.
P5
P5
– PWM Input is a signal input terminal for the external PWM signal.
P6
– I2C Pullup Selection Jumper is a place for selecting a pull-up reference for the I2C bus. V-USB is a
3.3V reference provided by the USB-I2C Interface Board
F1, F2
F1, F2
– Connectors for interfacing to the USB-I2C Interface Board.
FP1
– Connector for interfacing to the LED Board.
Dx Jumpers
– Jumpers for bypassing LED current sense resistors.
TP1
– VBOOST Output test point.
TP2
– VLDO Output test point.
TP3
– Current sinks’ headroom voltages test points.
TP4
– VIN Input test point.
TP5
– Switch node test point.
TP6
– EN / VDDIO test point.
TP7
– VIN input test point.