OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

DC2131A

P1-P3P4-P6P7-P8
1
dc2131afb
DEMO MANUAL DC2131A
DESCRIPTION
LTC3623
15V, ±5A Monolithic Synchronous
Step-Down Regulator
Demonstration circuit 2131A is a current mode DC/DC
step-down Silent Switcher
®
buck regulator featuring the
LT C
®
3623. The board operates from an input range of 4V
to 15V, and provides ±5A of output current. The output
voltage of the demonstration board can be set from 0V to
V
IN
– 0.5V. It operates at 1MHz and may be synchronized
to an external clock. A soft-start feature controls output
voltage slew rate at start-up, reducing current surge and
voltage overshoot. A power good output and current
monitor signal are provided. Discontinuous conduction
mode can be selected with a jumper. The demonstration
board has options for cable drop compensation, negative
output voltage and input voltage regulation.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Silent Switcher are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
PERFORMANCE SUMMARY
This board is suitable for a wide range of battery-powered,
point-of-load, DDR memory, Thermo Electric Cooler (TEC)
systems and other applications. The LTC3623 is available
in a low profile, 24-pin QFN package. For other output
requirements, see the LTC3623 data sheet.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2131A
Specifications are at T
A
= 25°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Supply Range 4 15 V
V
OUT
Output Voltage Jumper Selectable 1 5 V
I
OUT
Output Current Range, Continuous 200LFM 0 5 A
f
SW
Switching (Clock) Frequency 1 MHz
V
OUT_P-P
Output Ripple V
IN
= 12V, V
OUT
= 5V, I
OUT
= 5A (20MHz BW) <25 mV
P–P
I
REG
Output Regulation V
IN
: 4V to 15V, A
OUT
: 0A to 5A, V
OUT
= 1V
V
IN
: 4V to 15V, A
OUT
: 0A to 5A, V
OUT
= 1.5V
V
IN
: 4V to 15V, A
OUT
: 0A to 5A, V
OUT
= 2.5V
V
IN
: 4.7V to 15V, A
OUT
: 0A to 5A, V
OUT
= 3.3V
V
IN
: 6.5V to 15V, A
OUT
: 0A to 5A, V
OUT
= 5V
±2
±2
±2
±2
±2
%
%
%
%
%
2
dc2131afb
DEMO MANUAL DC2131A
QUICK START PROCEDURE
Demonstration circuit 2131A is easy to set up to evalu-
ate the performance of the LTC3623. Refer to Figure 1
for proper measurement equipment setup and follow the
procedure below:
NOTE
: When measuring the output voltage ripple, care must
be taken to avoid a long ground lead on the oscilloscope
probe. Measure the output voltage ripple by touching the
probe tip and ground ring directly across the last output
capacitor as shown in Figure 1.
1. Using an input power supply that is capable of 4V to
15V, set the voltage to 12V. Then turn off the supply.
2. With power off, connect the supply to the input terminals
+V
IN
and –V
IN
.
a. If efficiency measurements are desired, an ammeter
capable of measuring 5A DC or a resistor shunt can be
put in series with the input supply in order to measure
the DC1722A’s input current.
b. A Voltmeter with a capability of measuring at least 15V
can be placed across the input terminals in order to get
an accurate input voltage measurement.
3. Turn on the power at the input.
NOTE: Make sure that the input voltage never
exceeds 15V.
4.
Check for the proper output voltage which is set using
a jumper. Setting the jumper to the OPT position will
set the output voltage to 5V.
5. Once the proper output voltage is established, connect
a variable load capable of sinking 5A at 5V to the output
terminals +V
OUT
and –V
OUT
. Set the current for 0A.
a. If efficiency measurements are desired, an ammeter
or a resistor shunt that is
capable of handling 5A DC
can
be put in series with the output load in order to
measure the DC3623A’s output current.
b. A Voltmeter with a capability of measuring at least 5V
can be placed across the output terminals in order to
get an accurate output voltage measurement.
NOTE: If there is no output, temporarily disconnect the
load to make sure that the load is not set too high.
6. Adjust the load and/or input within the operating range
and observe the output voltage regulation, ripple volt
-
age, efficiency and other desired parameters.
3
dc2131afb
DEMO MANUAL DC2131A
QUICK START PROCEDURE
Figure 1. Proper Measurement Equipment Setup
P1-P3P4-P6P7-P8

DC2131A

Mfr. #:
Buy DC2131A
Manufacturer:
Analog Devices Inc.
Description:
Power Management IC Development Tools LTC3623 Demo Board - 15V, 5A Monolithic
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet