ADP1621-EVALZ: 5V @ 2A, 3.0 ~ 3.6V in, Boost

Summary

This data sheet describes the design, operation and test results of the ADP1621 Evaluation Board. The input range for the demo board is 3.0 V to 3.6 V, and the output voltage is 5 V with a maximum load of 2 A.

The switching frequency fSW is set to 600 kHz with a 36 kΩ resistor.

This design is done in all multilayer ceramic capacitors (MLCC), although other types of capacitors can be used, such as the aluminum polymer or aluminum electrolytic capacitors.

The PCB is laid out in such a way that the user can easily modify the demo board for other input and output configurations. See the Other Configurations section for more information.

The ADP1621 is a fixed-frequency, pulse-width modulation (PWM), current-mode, step-up converter controller. It drives an external N-channel MOSFET to convert the input voltage to a higher output voltage. The ADP1621 can also be used to drive flyback, SEPIC, and forward converter topologies, either isolated or non-isolated.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	ADP1621-EVALZ-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Up
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	5 V
Current Out	2 A
Voltage In	3 ~ 3.6 V
Efficiency @ Conditions	>85%, 3.3V in, 5V @ 0.3 ~ 2.0 A
Voltage Out Range	- Fixed
Features	Current Limit (Adj. or Fixed) Shutdown, Enable, Standby Soft Start Synchronizable
Switching Frequency	600 kHz
Standby Current [Typical]	1 µA
Quiescent Current [Typical]	1.8 mA
Component Count + Extras	25 + 7
Internal Switch	No
Design Author	Analog Devices
Application / Target Market	LCD Backlighting Portable Devices
Standby Current [Maximum]	10 µA
Quiescent Current [Maximum]	3 mA
Main I.C. Base Part	ADP1621
Date Created By Author	2006-11
Date Added To Library	2013-10