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dc1041a-af
DEMO MANUAL DC1041A-A
QUICK START PROCEDURE
Figure 1. Test Setup of DC1041A-A (DRVCC Bias Supply is Optional)
Demonstration circuit DC1041A-A is an easy way to evalu-
ate the performance of the LTM4601EV. Please refer to
Figure 1 for proper measurement equipment setup and
follow the procedure below:
1. With the power supply off, connect the input power
supply, load and meters as shown in Figure 1. Preset
the load to 0A and power supply voltage within the
LTM4601’s operating input voltage range.
2. Place jumpers in the following positions for a typical
1.5V
OUT
application:
MARG0
MARG1
RUN
V
OUT
SELECT
LO
LO
ON
1.5V
3. Turn on the power at the input. The output voltage
should be 1.5V ± 1%.
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
J4 with a BNC cable.
5. For optional load transient test, apply an adjustable
pulse signal between IOSTEP (E3) and GND pins.
Pulse amplitude 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
transient current can be monitored at BNC connector
J3 (10mV/A).
6. For Margining function test, place jumper MARG0 and
MARG1 in the configurations shown in the following
table, measure the output voltage at J4.
MARG1
MARG0
ΔV
OUT
LO
LO
0
LO
HI
+5%
HI
LO
–5%
HI
HI
0
