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dc2161af

DEMO MANUAL DC2161A

DC2161A is easy to set up to evaluate the performance

of the LTC4231.

Connect a power supply capable of delivering greater than

withitsreturnleadconnectedtoGNDJ2.Monitortheinput

voltage at turrets E1 and E2. Place a voltmeter between

turretsE3andE4.ConnectanammeterbetweenJ3andthe

test loads. Connect the return lead of the test loads to jack

J4. The connections are shown schematically in Figure 1.

The active load should be set to provide a resistive load

since the LTC4231 may not start into a constant current

load. With the resistive load set at 5.4Ω, vary the input

voltage from 9V to 17V and from 17V to 9V to check the

UV and OV thresholds.

QUICK START PROCEDURE

Set the input voltage to 12V, vary the load resistance, and

observe output indicator D2. Determine from the ammeter

that the output remains on at 3A (4Ω). The output should

turn off at approximately 3.2A.

Reduce the load resistance to below 4Ω and observe an

auto reset in the DC2161A-B. In the DC2161A-A, power

will have to be removed and then applied to the input to

reset the LTC4231.

Remove the resistive load from the output and replace it

with a 500µF capacitor. Observe the polarity when con-

necting the capacitor. Upon application of input voltage,

indicates the Hot Swap Controller is capable of starting

into a 500µF capacitor.

Figure 1. Proper Equipment Measurement Set-Up

V

A

TEST

LOADS

V

POWER

SUPPLY