Linear Technology LTM4600 Demo Board, 20V, 10A Step-Down Power µModule Regulator DC823B-A DC823B-A Data Sheet
Product codes
DC823B-A
2
dc823baf
DEMO MANUAL DC823B-A
QUICK START PROCEDURE
Figure 1. Test Set-Up of DC823B-A (EXTVCC V
BIAS
Supply is Optional)
Demonstration circuit DC823B-A is an easy way to evalu-
ate the performance of the LTM4600EV. Refer to Figure 1
for proper measurement equipment set-up and follow the
procedure below:
1. Place jumpers in the following positions for a typical
1. Place jumpers in the following positions for a typical
1.5V
OUT
application:
FCB
RUN/SS
V
OUT
Select
CCM
ON
1.5V
2. With power off, connect the input power supply,
load, optional 5V bias supply and meters as shown in
Figure 1. Preset the load to 0A and V
IN
supply to be less
than 20V. The optional 5V bias supply applied to the
EXTVCC pin must be off while the main V
IN
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 voltage ripple should be measured
at J6 with a BNC cable.
5. For optional load transient test, apply an adjustable
pulse signal between IOSTEP CLK and GND pins.
Pulse amplitude sets the current step. The pulse signal
should have very small duty cycle (<15%) to limit the
thermal stress of the transient load circuit. The output
transient current can be monitored at BNC connector
J5 (10mV/A).
+
–
+
–
V
+
–
LOAD
0A TO 10A
+
–
A
+
–
+
–
A
+
–
V
dc823ba FO1