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Analog Devices DC2910A Demo Manual
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Analog Devices DC2910A Demo Manual

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Low V
DESCRIPTION
Demonstration circuit 2910A is low V
and dual 2A output µModule DC/DC converter. The
board operates by default at a fixed 2MHz and can be
synchronized from 1MHz to 3MHz via the MODE/SYNC
pin. With its high switching frequency and current mode
architecture, a fast transient response to line and load
changes is possible without sacrificing stability. The
DC2910A can be used in forced continuous mode or pulse
skip mode for low noise, or in burst mode operation for
PERFORMANCE SUMMARY
PARAMETER
Input Voltage Range
Output Voltage, V
OUT
Maximum Output Current, I
OUT
Typical Efficiency
Peak Efficiency
Switching Frequency
BOARD PHOTO
, High Efficiency, Dual 2A Step-down
IN
μModule DC/DC Converter
, high efficiency,
IN
Specifications are at T
CONDITIONS
V
= 2.35V – 3.6V, I
IN
OUT
V
= 2.35V – 3.6V
IN
V
= 3.3V, V
= 1.2V, I
IN
OUT1
V
= 3.3V, V
= 1.8V, I
IN
OUT2
V
= 3.3V, V
= 1.2V
IN
OUT1
V
= 3.3V, V
= 1.8V
IN
OUT2
DEMO MANUAL DC2910A
high efficiency at light loads. The demo board features
the
LTM
4691, which is available in a low profile 3mm
®
x 4mm x 1.2mm LGA package. Please see the LTM4691
datasheet for more detailed information.
It is recommended to read the data sheet for the LTM4691
prior to making any changes to the DC2910A.
Design files for this circuit board are
All registered trademarks and trademarks are the property of their respective owners.
= 25°C
A
= 0A to 2A
= 2A
OUT
= 2A
OUT
LTM4691
available.
VALUE
2.35V to 3.6V
V
= 1.2V
OUT1
V
= 1.8V
OUT2
2A
84%
88%
89%
92%
2MHz
Rev. 0
1

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Summary of Contents for Analog Devices DC2910A

  • Page 1 Design files for this circuit board are available. DC2910A can be used in forced continuous mode or pulse skip mode for low noise, or in burst mode operation for All registered trademarks and trademarks are the property of their respective owners.
  • Page 2 DEMO MANUAL DC2910A QUICK START PROCEDURE Demonstration circuit 2910A is easy to set up to evaluate 7. Check for the proper output voltages from V to GND the performance of the LTM4691. Refer to Figure 1 for turrets. the proper measurement equipment setup and follow the 8.

  • Page 3: Quick Start Procedure

    DEMO MANUAL DC2910A QUICK START PROCEDURE – – – Load 0A to 2A – – Load – 0A to 2A – – Figure 1. Proper Measurement Equipment Setup Figure 2. Measuring Output Voltage Ripple DC LOAD CURRENT (A) Figure 3. Efficiency vs. Load Current at V = 3.3V, V...
  • Page 4 DEMO MANUAL DC2910A QUICK START PROCEDURE DC LOAD CURRENT (A) Figure 4. Efficiency vs. Load Current at V = 3.3V, V = 1.8V, f = 2MHz OUT2 OUT1 5mV/DIV 1 s/DIV Figure 5. Output Voltage Ripple at V = 3.3V, V = 1.2V, f...
  • Page 5 DEMO MANUAL DC2910A OUT1 20mV/DIV OUT1 500mA/DIV 50 s/DIV Figure 7. Load Step at V = 3.3V, V = 1.2V, f = 2MHz OUT1 OUT2 20mV/DIV OUT2 500mA/DIV 50ms/DIV Figure 8. Load Step at V = 3.3V, V = 1.8V, f = 2MHz OUT2 Figure 9.

  • Page 6: Parts List

    R9, R10 RES., 100k OHMS, 5%, 1/16W, 0402, AEC-Q200 VISHAY, CRCW0402100KJNED RES., 10M OHMS, 1%, 1/16W, 0402 VISHAY, CRCW040210M0FKED IC, Dual 2A Step-Down uMODULE REG, 24-PIN LGA ANALOG DEVICES, LTM4691EY#PBF Additional Demo Board Circuit Components C9-C12 CAP ., OPTION, 0402 C13-C16 CAP ., OPTION, 0603...

  • Page 7: Schematic Diagram

    Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
  • Page 8 Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY.