1. Manuals
  2. Brands
  3. Linear Technology Manuals
  4. Motherboard
  5. DC2268A-E
  6. Demo manual

Linear Technology DC2268A-E Demo Manual

Ltm4630ey-1 dual 18a or single 36a mmodule regulator
Hide thumbs
1
2
3
4
5
6
7
8

Advertisement

Table of Contents

DESCRIPTION
Demonstration circuit 2268A-E is a high efficiency, high
density, dual 18A, switch mode step-down power supply
on a compact 1.5' × 1.2' PCB. It features the
μModule regulator. The input voltage is from 4.5V to 15V.
The output voltage is programmable from 0.6V to 1.8V.
DC2268A-E can deliver up to 18A maximum in each chan-
nel. With the help of external compensation, ±3% transient
accuracy can be achieved with 25% load step. As explained
in the data sheet, output current derating is necessary
for certain V
, V
IN
operates in continuous conduction mode in heavy load
conditions. For high efficiency at low load currents, the
resistor jumper (R1/R2) selects pulse-skipping mode for
noise sensitive applications or Burst Mode
sensitive applications. Two outputs can be connected in
parallel for a single 36A output solution with optional jumper
resistors. The board allows the user to program how its
BOARD PHOTO
Arrow.com.
Downloaded from
, and thermal conditions. The board
OUT
®
Figure 1. LTM4630-1/DC2268A-E Demo Board
DEMO MANUAL DC2268A-E
Dual 18A or Single 36A
output ramps up and down through the TRACK/SS pin.
Remote output voltage sensing is available for improved
LTM4630-1
output voltage regulation at the load point. An optional
input inductor L1 reduces the EMI noise for noise sensitive
applications. DC2268A can be easily inserted to an edge
connector for testing and debugging. These features and
the availability of the LTM4630-1EY in a compact 16mm
× 16mm × 5.01mm BGA package make it ideal for use in
many high-density point-of-load regulation applications.
The LTM4630-1 data sheet must be read in conjunction
with this demo manual for working on or modifying the
demo circuit DC2268A-E.
Design files for this circuit board are available at
in less noise
http://www.linear.com/demo/DC2268A-E
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
LTM4630EY-1
μModule Regulator
dc2268aef
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DC2268A-E and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Linear Technology DC2268A-E

Summary of Contents for Linear Technology DC2268A-E

  • Page 1 Two outputs can be connected in L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks parallel for a single 36A output solution with optional jumper of Linear Technology Corporation. All other trademarks are the property of their respective resistors.

  • Page 2: Performance Summary

    OUT1 STEP QUICK START PROCEDURE Demonstration circuit DC2268A-E is easy to set up to 4. Once the proper output voltage is established, adjust the evaluate the performance of the LTM4630EY-1. It can load within the operating range and observe the output...
  • Page 3 DC2268A-A LTM4620 13A,13A DC2268A-B LTM4620A 13A,13A DC2268A-C LTM4628 8A, 8A DC2268A-D LTM4630 18A,18A DC2268A-E LTM4630-1 18A,18A DC2268A-F LTM4630A 18A, 18A DC2268A-G LTM4631 10A, 10A Figure 2. Test Setup of DC2268A-E dc2268aef Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
  • Page 4 DEMO MANUAL DC2268A-E QUICK START PROCEDURE Efficiency, 1V Efficiency, 1.5V = 12V 88.4 88.1 = 500kHz 89 89.3 89.2 88.9 87.9 86.1 86.2 85.9 85.4 85.3 85.5 84.7 83.1 78.9 76.1 = 12V = 500kHz LOAD LOAD dc2268 F03 dc2268 F04 Figure 3.
  • Page 5 DEMO MANUAL DC2268A-E QUICK START PROCEDURE 1.5V OUTPUT (20MHz BW) [50mV/DIV] 0A TO 4.5A LOAD STEP dc2268 F06 Figure 6. Measured Channel 2 0A to 4.5A Load Transient (V = 12V, V = 1.5V) OUT2 Figure 7. Thermal Performance at V = 12V, V = 1.0V/14A,...

  • Page 6: Parts List

    DEMO MANUAL DC2268A-E PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1, CIN2, CIN3, CIN4, CIN5, CIN6 CAP, 1210 22µF 10% 25V X5R AVX 12103D226KAT2A CO1, CO5 CAP, 7343 470µF 20% 2.5V POSCAP PANASONIC ETPF470M5H CO2, CO3, CO4, CO6 CAP, 1210 100µF 10% 6.3V X5R...

  • Page 7: Schematic Diagram

    Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
  • Page 8 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.

Table of Contents