Linear Analog Devices DC2984A Manual
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Linear Analog Devices DC2984A Manual

Linear Analog Devices DC2984A Manual

Multioutput power management solution with 4 buck switching and 3 ldo linear regulators
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with 4 Buck Switching and 3 LDO Linear Regulators
DESCRIPTION
DC2984A is a multi-output power management solution
demonstration circuit, featuring the
two 2.5A synchronous step-down DC-DC regulators, two
1.5A synchronous step-down DC-DC regulators and three
300mA LDO regulators. All the regulators can be enabled
PERFORMANCE SUMMARY
SYMBOL
PARAMETER
V
Input Voltage Range
IN
V
BUCK1 Output Voltage
BUCK1
V
BUCK2 Output Voltage
BUCK2
V
BUCK3 Output Voltage
BUCK3
V
BUCK4 Output Voltage
BUCK4
V
LDO1 Output Voltage
LDO1
V
LDO2 Output Voltage
LDO2
V
LDO3 Output Voltage
LDO2
BOARD PHOTO
Multioutput Power Management Solution
LT
3383. It contains
®
Specifications are at T
CONDITIONS
BUCK1 enabled, I(BUCK1) = 0~2.5A
BUCK2 enabled, I(BUCK2) = 0~2.5A
BUCK3 enabled, I(BUCK3) = 0~1.5A
BUCK4 enabled, I(BUCK4) = 0~1.5A
LDO1 enabled, I(LDO1) = 0~300mA
LDO2 enabled, I(LDO2) = 0~300mA
LDO3 enabled, I(LDO3) = 0~300mA
Figure 1. DC2984A Board Photo
DEMO MANUAL DC2984A
via its corresponding enable pins. The startup sequence of
the regulators can be programmed by connecting the out-
puts of the regulators to the enable pins in desired order.
Design files for this circuit board are
All registered trademarks and trademarks are the property of their respective owners.
= 25°C
A
LT3383
available.
MIN
TYP
MAX
2.7
5.5
1.20
1.50
1.81
3.31
1.20
0.80
1.80
UNITS
V
V
V
V
V
V
V
V
Rev. 0
1

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Summary of Contents for Linear Analog Devices DC2984A

  • Page 1 DEMO MANUAL DC2984A LT3383 Multioutput Power Management Solution with 4 Buck Switching and 3 LDO Linear Regulators DESCRIPTION DC2984A is a multi-output power management solution via its corresponding enable pins. The startup sequence of demonstration circuit, featuring the 3383. It contains the regulators can be programmed by connecting the out- ®...

  • Page 2: Quick Start Procedure

    DEMO MANUAL DC2984A QUICK START PROCEDURE Follow the procedure below to familiarize yourself with = 1.2V the DC2984A. = 0.8V 1. Refer to Figure 2, configure the jumpers on the demo = 1.8V board as follows: 4. Set each electronic load to its corresponding current JP1 = VIN level indicated in Figure ...

  • Page 3: Jumper Descriptions

    DEMO MANUAL DC2984A JUMPER DESCRIPTIONS JUMPER NAME FUNCTION POSITION DESCRIPTION JP1-JP3 Input for the LDOs V(B3) Input from BUCK3 Input from external source connected to VIN_LDO turret Input from VIN turret JP4-JP10 _SEQ or Power up sequence for the regulators Default power up sequence _SEQ PGM/OFF...

  • Page 4: Performance Summary

    DEMO MANUAL DC2984A PERFORMANCE SUMMARY Specifications are at T = 25°C BUCK1-BUCK4 Efficiency BUCK1-BUCK2 Load Transient Response BUCK4 BUCK3 BUCK2 BUCK4 200mV/DIV BUCK1 BUCK3 200mV/DIV 1.5A 100mA 1A/DIV DC2984A G02 50µs/DIV LOAD CURRENT (A) DC2984A G01 BUCK3-BUCK4 Load Transient Response LDO1-LDO3 Load Transient Response LDO3 50mV/DIV...

  • Page 5: Test Setup

    DEMO MANUAL DC2984A TEST SETUP − − − − − − − − − − – − − − − Figure 2. Test Setup for DC2984A Demo Board Rev. 0...

  • Page 6: Operation

    DEMO MANUAL DC2984A OPERATION Introduction to the DC2984A BUCK4 The DC2984A a multi-output power management solu- 2V/DIV tion featuring the LT3383. It contains four synchronous BUCK3 2V/DIV buck regulators and three LDO regulators. Among the BUCK2 four buck regulators, BUCK1 and BUCK2 deliver up to 2V/DIV 2.5A output current, while BUCK3 and BUCK4 deliver BUCK1...

  • Page 7: Parts List

    DEMO MANUAL DC2984A PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components C1, C8-C11 CAP ., 10uF , X5R, 10V, 20%, 0603, AEC-Q200 TAIYO YUDEN, LMK107BBJ106MAHT C2-C7 CAP ., 1uF , X5R, 25V, 10%, 0402, AEC-Q200 MURATA, GRT155R61E105KE01D C12, C15, C17, C19 CAP ., 47uF , X5R, 6.3V, 20%, 0805, AEC-Q200 MURATA, GRT21BR60J476ME13L...
  • Page 8 DEMO MANUAL DC2984A SCHEMATIC DIAGRAM Rev. 0...

  • Page 9: Schematic Diagram

    DEMO MANUAL DC2984A SCHEMATIC DIAGRAM Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog 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.
  • Page 10 DEMO MANUAL DC2984A ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern.

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