The following procedure is for a
single EVM demonstration of the track function. Please see Figure 5-4.
- Shunt pins 2 and 3 of J8
(tracking enable jumper).
- The tracking engage switch (S2)
should be in the closed position.
- Connect an oscilloscope probe to
the TRACKING IN pin (J3 pin 1) and VOUT (TP 17 and 18).
- Connect the load to the output of
the EVM and set from 1 Aā10 A (User selectable).
- Power on the EVM with an input
voltage of 10.8 Vā13.2 V (Allow for SS voltage to reach 3.5 V to ensure proper
tracking performance or wait one to two seconds).
- Open the Tracking Engage Switch
(S2) (Shorting pins 1 and 2 open) and observe how VOUT tracks the TRACKING IN
pins rising voltage. Waveforms should be simultaneous.
- Close the Tracking Engage (S2)
(Shorting pins 2 and 3 open) and observe how VOUT tracks the TRACKING IN pins
falling voltage. Waveforms should be simultaneous.