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Linear Technology DC1198B-A Demo Manual

Ltm4605 20v, 5a high efficiency buck-boost µmodule regulator
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Description
Demonstration circuit DC1198B-A features the
LTM
4605EV, the high efficiency, high density switch
®
mode buck-boost µModule
regulate its output voltage from an input voltage above,
below, or equal to the output. The input voltage range
of DC1198B-A is from 4.5V to 20V with a preset output
voltage of 12V. The rated load current is 5A, although
derating is necessary for certain V
conditions. The switching frequency may be synchronized
to an external clock from 200kHz to 400kHz. This PLL
perForMAnce sUMMArY
PARAMETER
Input Voltage Range V
IN
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
Efficiency
Load Transient
BoArD photo
regulator. The LTM4605EV can
®
, V
, and thermal
IN
OUT
(T
= 25°C)
A
CONDITIONS
V
= 12V, I
= 5A.
IN
OUT
Derating Is Necessary for Certain V
Thermal Conditions
V
= 12V, V
IN
OUT
V
= 5V, V
= 12V
IN
OUT
DEMO MANUAL DC1198B-A
20V, 5A High Efficiency
Buck-Boost µModule Regulator
can be used not only to reduce undesirable frequency
harmonics but also to parallel LTM4605 to provide high
output current. The LTM4605 data sheet must be read in
conjunction with this demo manual prior to working on
or modifying DC1198B-A.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
, V
, and
IN
OUT
= 12V, I
= 5A
OUT
LTM4605
VALUE
4.5V to 20V
12V ± 2%
5A
at 5V
DC
IN
12A
at V
> V
DC
IN
OUT
300kHz
97.6%, See Figure 3 for More Information
See Figure 4 for Details
dc1198bafa
1

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Summary of Contents for Linear Technology DC1198B-A

  • Page 1 V , and thermal L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of conditions. The switching frequency may be synchronized Linear Technology Corporation. All other trademarks are the property of their respective owners.

  • Page 2: Quick Start Procedure

    DEMO MANUAL DC1198B-A qUick stArt proceDUre Demonstration circuit DC1198B-A is an easy way to evaluate 4. Once the proper output voltage is established, adjust the performance of the LTM4605EV. Please refer to Figure the load within the operating range and observe the...
  • Page 3 DEMO MANUAL DC1198B-A qUick stArt proceDUre INPUT OR OUTPUT CAPACITOR DC1198B F02 Figure 2. Proper Scope Probe Placement for Measuring Input or Output Ripple = 5V = 12V = 20V LOAD CURRENT (A) DC1198B F03 Figure 3. Measured Supply Efficiency with Different V .

  • Page 4: Parts List

    DEMO MANUAL DC1198B-A pArts list ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1 CAP, ALUM, 150µF, 20%, 35V SANYO, 35ME150WXV+TS (NOW SUNCON 35ME150WXV) CIN2, CIN3 CAP, X7R, 10µF, 20%, 35V, 1206 TAIYO YUDEN, GMK316BJ106ML-T CAP, X7R, 0.01µF, 25V, 10%, 0603...

  • Page 5: 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 6 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.
  • Page 7 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC1198B-A...