2
dc1084a-af
DEMO MANUAL DC1084A-A
QUICK START PROCEDURE
Figure 1. Test Setup of DC1084A-A (EXTV
CC
Bias Supply is Optional)
Demonstration circuit DC1084A-A is an easy way to
evaluate the performance of the LTM4602EV. Please refer
to Figure 1 for proper measurement equipment setup and
follow the procedure below:
1. Place jumpers in the following positions for a typical
1.5V
OUT
application:
FCB
RUN/SS
VOUT SEL
CCM
ON
1.5V
2. With power off, preset the load to 0A and V
IN
supply
to be less than 20V. Connect the input power supply,
load, optional 5V bias supply and meters as shown
in Figure 1. The optional 5V bias supply must be off
anytime the supply to VIN is turned off.
3. Turn on the power at the input. The output voltage
should be 1.5V ±2%.
4. Once the proper output voltage is established, adjust
the load within the operating range and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters. Output ripple should be measured at
J6 with a BNC cable.
5. For optional load transient test, apply adjustable pulse
signal between IOSTEP CLK and GND pins. Pulse am-
plitude sets the current step. The pulse signal should
have very small duty cycle (<15%) to limit the thermal
stress on the transient load circuit. The output tran-
sient current can be monitored at BNC connector J5
(10mV/A).
