Linear Technology LTM 4601AHVEV Manual
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Linear Technology LTM 4601AHVEV Manual

5vin to 28vin, 12a step-down µmodule regulator
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DESCRIPTION

Demonstration circuit 1414B-B features the
LTM
4601AHVEV, the high efficiency, high density switch
®
mode step-down power module. The input voltage range
is 5V to 28V with a jumper selectable output voltage
from 0.6V to 5V. The rated load current is 12A, although
derating is necessary for certain V
conditions. The PLLIN pin supports synchronizing the
μModule
®
regulator to an external clock. The TRACK/SS
pin allows the user to program output ramp-up and ramp-
down rates which may coincidentally or ratiometrically

PERFORMANCE SUMMARY

PARAMETER
Input Voltage Range
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
External Synchronous Clock Frequency Range
Efficiency
BOARD PHOTO
This datasheet has been downloaded from
DEMO MANUAL DC1414B-B
5V
IN
track with another voltage rail. Output voltage margining
of ±5% from the nominal value is available via the margin
control pins MARG0 and MARG1. The LTM4601AHV data
sheet must be read in conjunction with this demo manual
prior to working on or modifying demo circuit DC1414B-B.
, V
and thermal
IN
OUT
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.
(T
= 25°C)
A
CONDITION
Jumper Selectable (Open for 0.6V)
Derating is Necessary for Certain V
Thermal Conditions
Please Refer to Data Sheet for Minimum t
t
Requirement.
OFF
V
= 12V, V
= 3.3V, I
= 12A
IN
OUT
OUT
to 28V
, 12A Step-Down
IN
µModule Regulator
VALUE
5V to 28V
1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
, V
and
12A DC
IN
OUT
850kHz
and
600kHz to 1000kHz
ON
89.5%, See Figure 2
http://www.digchip.com
at this
LTM4601AHV
dc1414b-bf
1
page

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Summary of Contents for Linear Technology LTM 4601AHVEV

  • Page 1 ® regulator to an external clock. The TRACK/SS L, LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of pin allows the user to program output ramp-up and ramp- Linear Technology Corporation. All other trademarks are the property of their respective owners.
  • Page 2 DEMO MANUAL DC1414B-B QUICK START PROCEDURE Demonstration circuit 1414B-B is easy to set up to evalu- 5. For optional load transient test, apply adjustable pulse ate the performance of the LTM4601AHVEV. Please refer signal between IOSTEP CLK and GND pins. Pulse am- to Figure 1 for proper measurement equipment setup and plitude sets the current step.
  • Page 3 DEMO MANUAL DC1414B-B QUICK START PROCEDURE – 0A TO 12A LOAD – – – DC1414B-B F01 Figure 1. Test Setup of DC1414B-B 200mV/DIV 10A/DIV DC1414B-B F03 = 12V = 1.2V 2A TO 10A LOAD STEP Figure 2. Measured Supply Efficiency with Different V = 2 100μF , 3.6V, X5R, 1812 CERAMIC + = 12V) 1 22μF , 10V, X5R, 1206 CERAMIC...
  • Page 4 DEMO MANUAL DC1414B-B PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1 Cap., Alum 150μF 35V 20% SANYO 35ME150WXV+TS (now SUNCON 35ME150WXV) CIN2, CIN3 Cap., X7R 10μF 35V 20% Taiyo Yuden GMK316BJ106ML-T COUT1, COUT2 Cap., X5R 100μF 6.3V 20%, 1210/1812 TDK C4532X5R0J107M COUT4 Cap., X5R 10μF 10V 10%...
  • Page 5 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.

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Dc1414b-b

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