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Set-Up
J9 - GND
: This header connects to AGND to provide grounds for signal probing.
J10 - Connector
: This connector is for interfacing LED load board(WLEDEVM-260) via 2 row ribbon
cable.
J17 - Connector
: This connector is to use PWM signal from USB2ANY instead of V
IN
or external one
chosen by JP9.
J18 - Connector
: This connector is to use EN signal from USB2ANY instead of V
IN
or external one
chosen by JP1.
JP1 - Jumper
: This jumper is for selecting EN input state between high and low.
JP2 - Jumper
: This jumper is for connecting VOUT to J4 and J10 for LED load connection.
JP3 to JP8 - Jumpers
: These jumpers are for enabling or disabling LED channels.
JP9 - Jumper
: This jumper is used to set PWM control. Connecting pin 1 and pin 2 will send high signal
to device and set full on. Connecting pin2 and pin3 will send low signal to device and set off.
JP10 - Jumper
: This jumper is a small pad to place jumper resistor or current sensing resistor on VIN.
JP11 to JP16 - Jumpers
: TThese jumpers are used to bypass 10-
Ω
series resistors to measure LED
string current.
JP17 - Jumper
: This jumper is used to bypass series resistor on boost feedback (VLED) input.
JP18 - Jumper
: This jumper is used to connect VIN to boost circuit or to bypass JP10.
TP1 - Test Point
: This header is test point for VIN.
TP2 - Test Point
: This header is test point for VINB.
TP3 - Test Point
: This header is test point for VCC out.
TP4 - Test Point
: This header is test point for boost switch node voltage.
TP5 - Test Point
: This header is test point for REF.
TP6 - Test Point
: This header is test point for VLED (boost feedback).
TP7 - Test Point
: This header is test point for boost output voltage.
TP8 - Test Point
: This header is test point for EN.
TP9 - Test Point
: This header is test point for PWM input.
TP10 - Test Point
: This header is test point for SCL (I2C clock).
TP11 - Test Point
: This header is test point for SDA(I2C data).
TP12 - Test Point
: This header is test point for CS1(LED driver out for channel 1).
TP13 - Test Point
: This header is test point for CS6(LED driver out for channel 6).
5
SNVU490 – OCTOBER 2015
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