Added Resistor

Cut This Trace

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Setup

Figure 1. Loop Response Measurement Modification

2

Setup

This section describes how to properly use the TPS621x0EVM-627.

2.1

Input/Output Connector Descriptions

J1

– VIN

Positive input connection from the input supply for the EVM.

J2

– S+/S-

Input voltage sense connections. Measure the input voltage at this point.

J3

– GND

Return connection from the input supply for the EVM.

J4

– VOUT

Output voltage connection.

J5

– S+/S-

Output voltage sense connections. Measure the output voltage at this point.

J6

– GND

Output return connection.

J7

– PG/GND

The PG output appears on pin 1 of this header with a convenient ground on pin 2.

JP1

– EN

EN pin input jumper. Place the supplied jumper across ON and EN to turn on the IC.

Place the jumper across OFF and EN to turn off the IC.

JP2

– PG

PG pin pullup voltage jumper. Place the supplied jumper on JP2 to connect the PG pin

Pullup Voltage

pullup resistor to Vout. Alternatively, the jumper can be removed and a different

voltage can be supplied on pin 1 to pull up the PG pin to a different level. This

externally applied voltage must remain below 7 V.

2.2

Setup

To operate the EVM, set jumpers JP1 through JP2 to the desired positions per Section 2.1. Connect the

input supply to J1 and J3 and connect the load to J4 and J6.

3

TPS621x0EVM-627 Test Results

This section provides test results of the TPS621x0EVM-627.

3

SLVU483

– October 2011

TPS62160EVM-627 and TPS62170EVM-627

— Evaluation Modules

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© 2011, Texas Instruments Incorporated