Texas Instruments TPS62113EVM-465 Evaluation Module TPS62113EVM-465 TPS62113EVM-465 데이터 시트
제품 코드
TPS62113EVM-465
1.3.1
Additional WLED Section Options
1.3.2
Modifications to 3.3-V Regulator Section, U2
2
Setup
2.1
Input/Output Connector Descriptions
2.2
Configuration Selection
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Setup
External control of the WLED section is possible using the EZ430-RF2500 EVM. This module plugs into
connector J6. See the TPS62113 product folder on the TI Web site for additional information on this
option.
connector J6. See the TPS62113 product folder on the TI Web site for additional information on this
option.
Optional LED Lens: To focus the LED in a tighter beam, lens are available that mount on the board, such
as the Titanum-SS from Ledil or OPGD-1-002 from Dialight.
as the Titanum-SS from Ledil or OPGD-1-002 from Dialight.
The U2 is configured for evaluation of the adjustable output version. This unit is set to 3.3 V by R17
and R4. Resistors R17 and R4 can be changed to reset the output voltage between 1.2 V and 16 V;
see the TPS62113 data sheet (
and R4. Resistors R17 and R4 can be changed to reset the output voltage between 1.2 V and 16 V;
see the TPS62113 data sheet (
) for recommended values. If the output voltage is increased,
verify that the output capacitors C7 and C6 voltage rating is appropriate. Also, two extra output
capacitor positions are available if needed, C12 and C13.
U2 can be replaced with the fixed output version, TPS62111 or TPS62112. For this configuration,
replace R17 with a 0-
capacitor positions are available if needed, C12 and C13.
U2 can be replaced with the fixed output version, TPS62111 or TPS62112. For this configuration,
replace R17 with a 0-
Ω
resistor, and remove R4 and C9.
The LBI circuit is configured to shut the 3.3-V section down at a 10.5-V input voltage. This is adjustable
using resistors R14 and R13; see the data sheet for additional information.
using resistors R14 and R13; see the data sheet for additional information.
This section describes how to properly use the TPS62113EVM-465.
U1 – WLED Section:
J1 – LED VIN and
WLED input voltage source connection.
LED GND
J2 – LED+ and LED–
WLED output voltage connection
JP1 – LED – RTN
WLED header for monitoring LED current or disconnecting onboard LED
U2 – 3.3-V Regulator Section:
J3 – VIN and GND
3.3-V regulator input voltage source connection. Positive connects to bottom
three Vin pins, and negative connects to upper three GND pins.
three Vin pins, and negative connects to upper three GND pins.
J4 – VOUT and GND
3.3-V regulator output voltage connection. Positive connects to bottom three
VOUT pins, and negative connects to upper three GND pins.
VOUT pins, and negative connects to upper three GND pins.
JP3 – SYNC
3.3-V regulator high forces low-noise PWM mode, low enables power save
PFM/PWM
PFM/PWM mode. Also input for synchronization, if used.
JP2 – EN
3.3-V regulator Enable pin, low = off and high = on. Also open = on.
J5 – LBO/PG
Low-battery output (LBO) pulled up to Vout; low indicates LBI is below its
threshold.
Power good (PG), low indicates output voltage is less than 98.4% of the normal
value.
threshold.
Power good (PG), low indicates output voltage is less than 98.4% of the normal
value.
The WLED (U1) section of the EVM is configured to operate with an input voltage from 6 V to 17 V. EN is
hard wired to the ON position; it begins operating when power is applied. SYNC input is hard wired to the
nonpower save mode. Because the WLED is very bright, appropriate precautions must be taken.
hard wired to the ON position; it begins operating when power is applied. SYNC input is hard wired to the
nonpower save mode. Because the WLED is very bright, appropriate precautions must be taken.
SLVU321 – September 2009
TPS62113EVM-465
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