Texas Instruments Evaluation Module for TPS61185 2A WLED Driver IC TPS61185EVM-335 TPS61185EVM-335 Datenbogen
Produktcode
TPS61185EVM-335
TPS61185EVM-335 Assembly Drawings and Layout
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JP1 must be connected directly or through an ammeter to the high side of external LED strings.
WLEDEVM-260 connected to J4 can be used as external LED strings.
WLEDEVM-260 connected to J4 can be used as external LED strings.
•
Properly configure JP5-JP12 so that each IFB line either connects directly to an LED string, to the J4
connector, or to GND. Unused IFBx lines must have the appropriate JP5-JP12 jumpers shunted to
ground.
connector, or to GND. Unused IFBx lines must have the appropriate JP5-JP12 jumpers shunted to
ground.
•
To turn on the LEDs at full LED current and brightness, install JP3's shunt to VDD.
•
To dim the LEDs by PWM dimming, connect the function generator to the PWM pin of JP3.
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TPS61185EVM-335 Assembly Drawings and Layout
The following figures (
through
) show the design of the TPS61185EVM-335
printed-circuit board (PCB). The EVM has been designed using a two-layer, 2-oz copper-clad circuit
board, 4.83 cm × 7.62 cm, with all components on the top side and all active traces to the top and bottom
layers to allow the user to easily view, probe, and evaluate the TPS61185 control IC in a practical,
double-sided application. Moving components to both sides of the PCB or using additional internal layers
can offer additional size reduction for space-constrained systems.
board, 4.83 cm × 7.62 cm, with all components on the top side and all active traces to the top and bottom
layers to allow the user to easily view, probe, and evaluate the TPS61185 control IC in a practical,
double-sided application. Moving components to both sides of the PCB or using additional internal layers
can offer additional size reduction for space-constrained systems.
Figure 2. TPS61185EVM-335 Component Placement, Viewed From Top
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TPS61185EVM-335
SLVU308 – May 2010
Copyright © 2010, Texas Instruments Incorporated