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dc-dc module

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dc-dc module Customers Reviews

  • VMP3111

    posted by sohman

    - easy to solder- simple output voltage selection with one resistor- high efficiency (in the optimal current range)- reasonable price- very few external components required
    The efficiency seems to be highest (over 90%) when the output current is about 700 mA
    If you have an application that needs a regulated power supply between 1 and 3.3 V with a current requirement of around 700 mA and ease of use and price is more important to you than circuit board area you will be very happy with this device. It does work for lower and higher currents too but the efficiency is lower in those scenarios.
  • Handy Boost/Up Converter

    posted by Ketturi

    Does good job for rising 1-5V battery voltage to regulated 5V. Output voltage stable 5.18V with low ripple and noise. Small and fits easily in smaller project cases.
    Apparently does not mind if external 5V is fed to output. Low idle current, <200µA, so good for low energy projects.
    Good boost/up converter for DIY products that use batteries or solar cells etc. Can be used e.g. for arduino projects or mobile chargers, ultra small RC vehicles, wirelesses etc.
  • Great product for testing

    posted by erlenmeyer

    Good step-up module, with a clear display which display input and output voltage. Also you can turn it off (to save power). Welding is excelent and came with additional holes to fit it over a protoboard and M3 holes.
    I'm using this module to connect some bateries to make a regulable power source. I tested with a 550 mAh Li-Ion Battery and is working perfectly. Only have in mind the limitation of the board to 2.5 A.
    Great deal for DIY lovers!
  • Very useful as a power supply.

    posted by walterwitt

    Extremely useful buck module. Output is within 0.02V and 0.002A of set values tested with an EXTECH multi-meter. It's extremely easy to use once you know how to use it. You can set the Voltage/Current limits and measure the output Volts, Amps, Watts, and Amp hours. You can turn off the output while it's still powered on. You can set the default output parameters and save 10 sets of parameters.
    First:This module has a hidden menu which allows you to enable and disable certain features. Access it by holding OK when you power it on. Keep holding OK and it will scroll through the numbers 0-2. These numbers represent different features to enable / disable.-0 is whether it starts with the output on or not.-1 enables saving and loading output parameters as well as enables Watt and Amp-hour measurement.-2 is whether it starts with the output parameters auto scrolling.To enable or disable these features, release OK when the number is displayed and then it will show a Y if it's now enabled on N if it's now disabled.Second:When you apply power to the module it will ether start with the output on or off (shown by the red LED). If the output is on, you can scroll through the current Volts, Amps, Watts, and AH by pressing OK. Volts display with the decimal in the middle, Amps with the decimal on the left, Watts with a P at the start and AH with a C...
    ...Hold OK for 3 seconds to make the perimeters auto-scroll. You can change the output volt and amp limit with the UP and DOWN buttons when the parameter is displayed. If you push SET when the output is on, it will turn off and you will enter set mode. In set mode you can scroll through the set volts, and amps and the load (LO-#) and save (SA-#) menus by pressing SET. To change the default perimeters go to the one you want to change and use the UP/DOWN buttons to change it and then press SET to set it as the default value it (should display ----). to save the output parameters, go to the Save menu and use UP/DOWN to select where to save it(0 is default) and press OK to save it there. To load parameters, go to the Load menu and use UP/DOWN to select where to load from. press OK in set mode to turn on the output with set values.It's a little confusing at first, but once you get the hang of it, it becomes easy. Ether way, it's very useful and I highly recommend it.
  • provides +5 Volts from four AA bateries

    posted by LynnCochran

    I want to power an Arduino in a robot car from four AA batteries. When the batteries age, their combined voltage will drop from 6.3 volts to about 4V, so I need a DC-to-DC converter that can both step-down and step-up to get the desired 5 V output. This DC-DC converter can do that job! I tested my unit and measured about 52% efficiency for a 5V, 130 mA output over an input voltage range from 6.5V down to 3.5V. Nothing got noticeably warm. The board includes mounting hardware, and provides screw terminals for both input and output connections (no soldering needed).
    This design uses an LM2577 to step the input voltage up to about 32V, and a following step-down stage (using an LM2596) to convert the on-board 32V into the lower desired output voltage.
    This would work in my application. I bought a second type of DC-DC converter just in case this one didn't work out (SKU 285941); it also works, with a slightly higher efficiency and smaller board area (however, it requires soldered connections).

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