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1.3
Modifications
1.3.1
Adjustable Output IC U1 Operation
1.3.2
Fixed Output Operation
2
Setup and Results
2.1
Input / Output Connector and Header Descriptions
2.1.1
J1 – VIN
2.1.2
J2 – GND
2.1.3
J3 – VOUT
2.1.4
J4 – GND
2.1.5
JP1 – EN
Setup and Results
Table 1. Performance Specification Summary
Specification
Test Conditions
Min
Typ
Max
Unit
Input voltage
Iout = 500 mA
3.0
3.6
5.5
V
Output voltage
Iout = 0 mA to 500 mA
3.2
3.3
3.4
V
Output current
3.6 V in
0
500
1000
mA
Operating frequency
1000
kHz
Efficiency
3.6 V in at 500 mA load
90%
Output ripple
3.6 V in at 500 mA load
25
mV
The PWB for this EVM is designed to accommodate both the fixed and adjustable versions of this IC. If
the fixed version is installed, R1 is replaced with a 0-
Ω
resistor and R2 will be open.
U1 is configured for evaluation of the adjustable output version. This unit is configured for 3.3 V. Resistors
R1 and R2 are used to set the output voltage between 1.2 V and 5.5 V. See data sheet for recommended
values.
U1 can be replaced with the fixed version for evaluation. R1 would need to be replaced with a 0-
Ω
resistor; R2 position would be open.
This chapter describes how to properly use the TPS63000EVM-148.
Positive input connection from the input supply for U1.
Return connection from the input supply for U1, common with J4.
Output voltage connection.
Output return connection, common with J2.
Enable pin; 1=enabled and 0=disabled. Shorting jumper JP1 between the center pin and VIN turns on the
unit. Shorting the jumper between center pin and GND turns the unit off.
TPS63000EVM-148
2
SLVU156 – March 2006