Texas Instruments Evaluation Module for TPS61183 IC TPS61183EVM-528 TPS61183EVM-528 Datenbogen
Produktcode
TPS61183EVM-528
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Connector and Test Point Descriptions
4.1.4
J4 – 14-Pin Connector
This header facilitates connecting the TPS61183EVM-528 to the WLEDEVM-260 or WLEDEVM-461, LED
EVM boards. These boards must be ordered separately from the TPS61183EVM.
EVM boards. These boards must be ordered separately from the TPS61183EVM.
4.1.5
J5 – FPO
This header is the connection for the fault protection output that will indicate fault conditions including
OVP, OC, and OT.
OVP, OC, and OT.
4.1.6
J6 – GND
This header connects to the board's ground plane.
4.1.7
J7 & J8 – GND
This header connects to the board's ground plane.
4.1.8
JP1 – LEDs ON
The user can remove the shunt on this jumper and connect the high side of external LED strings. When
using the WLEDEVM-260 or WLEDEVM-461 LED EVMs, installing the shunt on this jumper connects the
output of the boost converter to J4. Removing the jumper removes the WLEDs from the boost converter
feedback path and causes the IC’s over-voltage protection circuitry to activate. Instead of the shunt, the
user can place an ammeter across the jumper to measure the total output current (i.e., 6×IFBx).
using the WLEDEVM-260 or WLEDEVM-461 LED EVMs, installing the shunt on this jumper connects the
output of the boost converter to J4. Removing the jumper removes the WLEDs from the boost converter
feedback path and causes the IC’s over-voltage protection circuitry to activate. Instead of the shunt, the
user can place an ammeter across the jumper to measure the total output current (i.e., 6×IFBx).
4.1.9
JP2 – EN-VDDIO
Installing the shunt on this jumper sets the ENABLE pin voltage to VDDIO, thereby enabling the IC's boost
converter. Removing the logic high signal allows the internal pulldown resistor to pull EN to ground, which
disables the IC's boost converter.
converter. Removing the logic high signal allows the internal pulldown resistor to pull EN to ground, which
disables the IC's boost converter.
Note: With Vin applied, VDDIO/VDD does not reach full regulation until EN is pulled high. While it is
possible to enable the IC by tying the EN pin to the unregulated VDDIO/VDD output for evaluation, it is not
recommended in a real application.
possible to enable the IC by tying the EN pin to the unregulated VDDIO/VDD output for evaluation, it is not
recommended in a real application.
4.1.10
JP3 – PWM-VDDIO
Installing the shunt on this jumper sets the PWM pin voltage to VDDIO, which sets the current sinks to
100% current and therefore any attached LEDs to full brightness. The user must connect an external
PWM signal or use JP4 to take PWM to a logic high (above 2.1 V but no higher than 20 V) in order to
enable the current sinks.
100% current and therefore any attached LEDs to full brightness. The user must connect an external
PWM signal or use JP4 to take PWM to a logic high (above 2.1 V but no higher than 20 V) in order to
enable the current sinks.
3
SLVU363 – July 2010
TPS61183EVM-528
Copyright © 2010, Texas Instruments Incorporated