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Test Setup (Optional)

4.3.4 Frequency Select Voltage Monitoring – TP6 and TP2

The TPS53114EVM-541 provides a test point for monitoring or driving the FSEL pin. This allows the user

to monitor the voltage on the FSEL pin. To use TP6, Install a shunt in JP1, and connect a voltmeter

positive terminal to TP6 and negative terminal to TP2.

4.3.5 Output Capacitor Select Pin Voltage Monitoring -TP7

The TPS53114EVM-541 provides a test point for the monitoring output capacitor selection pin of the

TPS53114 controller. It is connected to V5FILT for conductive polymer electrolyte type output capacitor on

the EVM.

4.3.6 Soft-Start – TP8 and TP2

The TPS53114EVM-541 provides a test point for monitoring the Soft-Start ramp voltage. This allows the

user to monitor the soft-start voltage during power on. To use TP8, connect an oscilloscope probe tip to

TP8, and use TP2 for the ground clip.

4.3.7 Enable– TP9

The TPS53114EVM-541 provides a test point for monitoring the Enable voltage. This allows the user to

monitor the enable voltage during power on and power off. To use TP9, install a shunt in JP2, and

connect an oscilloscope probe tip to TP9, and use TP2 for the ground clip.

5 Test Setup (Optional)

5.1 Equipment

5.1.1 Voltage Source

must be a voltage source capable of 0 Vdc to 22 Vdc at a minimum 1 A. Connect V

to J1 as shown in

Figure 2.

5.1.2 Meters

A1: Input Current Meter. 0-Adc to 1-Adc ammeter

V1: Input Voltage Meter. 0-V to 22-V voltmeter

V2: Output Voltage Meter. 0-V to 2-V voltmeter

5.1.3 Loads

LOAD1: Output Load. Electronic load set for Constant Current or Constant Resistance capable of 0 Adc

to 4 Adc at 1.20 Vdc. Connect LOAD1 to J2 as shown in Figure 2.

5.1.4 Oscilloscope

For Output Voltage Ripple: Oscilloscope must be an analog or digital oscilloscope set for ac-coupled

measurement with a 20-MHz bandwidth limiting. Use 20-mV/division vertical resolution, 1-µs/division

horizontal resolution.

For Switching Waveforms: Oscilloscope must be an analog or digital oscilloscope set for dc-coupled

measurement with 20-MHz bandwidth limiting. Use 2-V/division or 5-V/division vertical resolution and 1-

µs/division horizontal resolution.

5.1.5 Recommended Wire Gauge

VIN to J1: The connection between the source voltage (VIN) and J1 of TPS53114EVM-541 can carry as

much as 1 Adc of current. The minimum recommended wire size is AWG 18 with the total length of wire

less than 4 feet (2-foot input, 2-foot return).

SLVU373A–March 2010–Revised May 2012 TPS53114EVM-541

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