DC1663A Linear Technology, DC1663A Datasheet

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DC1663A

Manufacturer Part Number
DC1663A
Description
DEMO BOARD LTM4628
Manufacturer
Linear Technology
Series
µModuler
Datasheet

Specifications of DC1663A

Design Resources
LTM4628 Spice Model LTM4628 Gerber Files DC1663 Design Files DC1663 Schematic
Main Purpose
DC/DC, Step Down
Outputs And Type
2, Non-Isolated
Power - Output
-
Voltage - Output
1.2V, 1.5V
Current - Output
8A, 8A
Voltage - Input
4.5 ~ 26.5 V
Regulator Topology
Buck
Frequency - Switching
400kHz
Board Type
Fully Populated
Utilized Ic / Part
LTM4628
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
DESCRIPTION
Demonstration circuit DC1663A features the LTM
the high efficiency, high density, dual 8A output, switch
mode step-down power module. The input voltage is
from 4.5V to 26.5V. The output voltage is programmable
from 0.6V to 5.5V. Output current derating is necessary
for certain V
operates in continuous conduction mode in heavy load
conditions. For high efficiency at low load currents, the
MODE jumper (JP1) selects pulse-skipping mode for
noise sensitive applications or Burst Mode
in less noise sensitive applications. The DC1663A sets
the LTM4628EV default switching frequency to 400kHz;
however the frequency is resistor programmable from
250kHz up to 780kHz. An internal phase-lock loop allows
the module to be synchronized to an external clock. The
BOARD PHOTO
IN
, V
OUT
, and thermal conditions. The board
®
operation
®
4628EV,
LTM4628EV High Efficiency,
Dual 8A Step-Down Power
board allows the user to program how its output ramps
up and down through the TRACK/SS pin. The output can
be set up to either coincidentally or ratio metrically track
with another supply’s output. Remote output voltage sens-
ing is available for improved output voltage regulation at
the load point. These features and the availability of the
LTM4628EV in a compact 15mm × 15mm × 4.32mm LGA
package make it ideal for use in many high density point
of load regulation applications. The LTM4628 datasheet
must be read in conjunction with this demo manual for
working on or modifying the demo circuit DC1663A.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
DEMO MANUAL DC1663A
µModule Regulator
dc1663af
1

Related parts for DC1663A

DC1663A Summary of contents

Page 1

... DC1663A. Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks of Linear Technology Corporation ...

Page 2

... TRACK1 and TRACK2, need to be connected to a valid voltage signal. 8. (Optional) LTM4628 can be configured for a 2-phase single output 16A on DC1663A. Refer to the schematic for corresponding jumper resistor setup for dual phase single output applications. VALUE 4.5V to 26.5V 1.5V ± ...

Page 3

... QUICK START PROCEDURE – LOAD DEMO MANUAL DC1663A V V OUT2 OUT1 – – – 4.5V TO 26. – – Figure 1. Test Setup of DC1663A + – A LOAD 1663a F01 dc1663af 3 ...

Page 4

... DEMO MANUAL DC1663A QUICK START PROCEDURE LOAD CURRENT (A) Figure 2. Measured Efficiency on Channel 1.5V 400kHz, Channel 2 Disabled) OUT1 SW V OUT1 AC-COUPLED 20MHz BW 100mV/DIV I OUT1 STEP 3.3A/DIV Figure 4. Measured Channel 1 Load Transient (V = 12V 1.5V) IN OUT1 1.5V OUTPUT AC-COUPLED 20MHz BW 50mV/DIV 1.2V OUTPUT AC-COUPLED ...

Page 5

... XJP1 to XJP6 5 3 J1, J2 Stand-Off DEMO MANUAL DC1663A DESCRIPTION Cap., X5R, 10µF, 35V, 10%, 1210 Cap., 470µF, 4V, POSCAP, F8 Cap., X5R, 100µF, 6.3V, 20%, 1210 Cap., X5R, 0.1µF, 25V, 10%, 0603 Res., Chip, 10, 1%, 0603 Res., Chip, 60.4k, 1%, 0603 Res., Chip, 40.2k, 1%, 0603 Res ...

Page 6

... DEMO MANUAL DC1663A SCHEMATIC DIAGRAMS 6 VOUT2 C12 VOUT2 C11 VOUT2 C10 VOUT2 C9 VOUT2 B12 VOUT2 B11 VOUT2 B10 VOUT2 B9 VOUT2 B8 VOUT2 A12 VOUT2 A11 VOUT2 A10 VOUT2 A9 VOUT2 A8 EXTVCC J7 INTVCC H8 CLKOUT G5 MODE-PLLIN F4 TEMP J6 VIN J2 VIN J3 VIN J4 VIN J9 VIN J10 VIN J11 ...

Page 7

... SCHEMATIC DIAGRAMS 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. DEMO MANUAL DC1663A dc1663af ...

Page 8

... DEMO MANUAL DC1663A 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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