DC2007A-A: 0.6 ~ 15V @ 70A, 4.5 ~ 15V in

Summary

Demonstration Circuit 2007A-A features a PolyPhase® design using the LTM®4630EV, the high efficiency, high density, dual 18A, switch mode step-down power μModule® regulator. The input voltage is from 4.5V to 15V. The output voltage is jumper selectable from 0.9V to 1.8V. The DC2007A-A can deliver a nominal 70A output current. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions.

The LTM4630 on the DC2007A-A always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. The board allows the user to program how its output voltage ramps up and down through the TRACK pin.

The output voltage is tightly regulated between “VO+” and “VO-” through remote output voltage sensing which improves output voltage regulation at heavy loads. These features and the availability of the LTM4630EV in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high density point-of-load regulation applications.

The LTM4630 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2007A-A.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	DC2007A-A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1 V
Current Out	70 A
Voltage In	4.5 ~ 15 V
Efficiency @ Conditions	>88%, 12V in, 1.8V @ 24 ~ 70 A >87%, 12V in, 1.5V @ 22 ~ 70 A >85%, 12V in, 1.2V @ 18 ~ 70 A >84%, 12V in, 1.0V @ 16 ~ 70 A >83%, 12V in, 0.9V @ 14 ~ 70 A
Voltage Out Range	0.6 ~ 1.8 V
Features	Current Foldback Protection Current Limit (Adj. or Fixed) Over Voltage Protection Power Good Output Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out Voltage Tracking
Switching Frequency	400 kHz
Standby Current [Typical]	50 µA
Quiescent Current [Typical]	3 mA
Component Count + Extras	39 + 78
Internal Switch	Yes
Design Author	Linear Technology
Application / Target Market	Memory Back-up Networking Power: Industrial Power Telecom
Standby Current [Maximum]	- Not Given
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	LTM4630
Date Created By Author	2013-08
Date Added To Library	2016-05