Table of Contents
Advertisement
Quick Links
Description
Demonstration circuit 2147A features the
the high efficiency, high density, dual 10A, switch mode
step-down µModule
voltage is from 4.5V to 15V. The output voltage is pro-
grammable from 0.6V to 1.8V. DC2147A can deliver up to
10A maximum in each channel. As explained in the data
sheet, output current derating is necessary for certain
V
, V
, and thermal conditions. The board operates in
IN
OUT
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 ap-
plications or Burst Mode
applications. Two outputs can be connected in parallel for
a single 20A output solution with optional jumper resis-
tors. The board allows the user to program how its output
BoarD photo
Arrow.com.
Downloaded from
LTM
power module regulator. The input
®
operation in less noise sensitive
®
DEMO MANUAL DC2147A
Ultrathin Dual 10A or Single 20A
DC/DC µModule Regulator
4631,
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
sensing is available for improved output voltage regula-
tion at the load point. These features and the availability
of the LTM4631 in a compact 16mm × 16mm × 1.91mm
LGA package make it ideal for use in many high density
point-of-load regulation applications. The LTM4631 data
sheet must be read in conjunction with this demo manual
for working on or modifying the demo circuit DC2147A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2147A
L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
LTM4631
dc2147af
1
Advertisement
Table of Contents
Related Manuals for Linear Technology DC2147A
Summary of Contents for Linear Technology DC2147A
- Page 1 Two outputs can be connected in parallel for L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule and the Linear logo are registered a single 20A output solution with optional jumper resis- trademarks of Linear Technology Corporation. All other trademarks are the property of their tors.
-
Page 2: Performance Summary
DEMO MANUAL DC2147A performance summary Specifications are at T = 25°C PARAMETER CONDITIONS/NOTES VALUE Input Voltage Range 4.5V ~ 15V Output Voltage V = 4.5V ~ 15V, I = 0A ~ 10A, JP1: CCM 1.2V ± 1.5% (1.182V ~ 1.218V) - Page 3 Switch the jumper resistors R34 or R35 8. (Optional) LTM4631 can be configured for a 2-phase (on the backside of boards) to apply load transient single output at up to 20A on DC2147A. Install 0Ω on channel 1 or channel 2 correspondingly. resistors on R and remove R .
- Page 4 DEMO MANUAL DC2147A Quick start proceDure EFFICIENCY = 12V = 1.2V = 650kHz OUTPUT CURRENT (A) dc2147a F02 Figure 2. Measured Efficiency on Channel 1 = 1.2V, f = 650kHz, Channel 2 Disabled) OUT1 EFFICIENCY = 12V = 1V = 650kHz...
- Page 5 DEMO MANUAL DC2147A Quick start proceDure 1.2V OUTPUT [50mV/DIV] 5A TO 10A LOAD STEP [4A/DIV] Figure 4. Measured Channel 1 5A to 10A Load Transient = 12V,V = 1.2V) OUT1 1V OUTPUT [50mV/DIV] 5A TO 10A LOAD STEP [4A/DIV] Figure 5. Measured Channel 2 5A to 10A Load Transient...
- Page 6 DEMO MANUAL DC2147A Quick start proceDure Figure 6. Thermal Capture at 12V , 1.2V at 10A and 1V at 10A OUT1 OUT2 = 25°C, No Forced Airflow and No Heat Sink) Figure 7. Thermal Capture at 12V , 1.2V at 10A and 1V...
-
Page 7: Parts List
DEMO MANUAL DC2147A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1 CAP , 150µF, 25V, ALUMINUM ELECTR SUN ELECT, 25CE150AX CIN2, CIN3 CAP , X5R, 22µF, 25V, 20%, 1206 TDK, C3216X5R1E226M160AB COUT1, COUT5 CAP , X5R, 100µF, 4V, 20%, 1206... -
Page 8: Schematic Diagram
DEMO MANUAL DC2147A schematic Diagram dc2147af Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from... - Page 9 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 10 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.
Need help?
Do you have a question about the DC2147A and is the answer not in the manual?
Questions and answers