Jumper and Connector Setup
2.2
Setup
This EVM requires an external power supply capable of providing 10 V to 30 V at 5 A. To change the
default current value (that is, implement dimming), the user can apply either a PWM signal to JP8-pin2
and connect PWM1–PWM6 together, or apply six independent PWM signals to PWM1–PWM6.
The hardware connections of TPS61196EVM-600:
•
The DC power supply is connected between J1-pin1 and J1-pin2.
•
The LED array is connected to the J3.
•
The one single PWM dimming signal can be connected to JP8-pin2, six independent PWM dimming
signals can be connected to J5-pin 2, 4, 6, 8, 10, 12.
The range of dimming frequency is 90 Hz to 22 kHz. The output overvoltage protection is set to 60 V,
which can be adjusted by R7 in SCH, then can drive different series number of LEDs. To ensure the
TPS61196EVM-600 operates properly, the minimum output voltage of the board should be more than
input power voltage. This requires selection of the LED array carefully to make sure the total forward
voltage of the series LEDs is more than the input voltage.
shows the default configuration of the jumpers.
Figure 1. Default Jumper Configuration
3
SLVUA25 – January 2014 – Revised February 2014
TPS61196EVM-600 User's Guide
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