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LM2596 DC-DC Step Down CC-CV Adjustable Power Supply Module Output DC 1.5V-35V

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LM2596-DC-DC-Step-Down-CC-CV-Adjustable-Power-Supply-Module-Output-DC-1-5V-35V
Item Sold
Item condition:
New
Ended:
Dec 11, 2012 00:45:33 PST
Price:
US $1.74
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History:
3,612 sold
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Item location:
SHENZHEN,GUANGDONG PROVINCE, China
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Description

Item number:
250954117473
Seller assumes all responsibility for this listing.
Last updated on  Dec 09, 2012 11:44:43 PST  View all revisions

Item specifics

Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions- opens in a new window or tab ... Read moreabout the condition
 

POLIDA ELECTRICAL(H.K)LIMITED

Visit my eBay store  POLIDA ELECTRICAL(H.K)LIMITED

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              LM2596 DC-DC Step Down CC-CV Adjustable Power Supply Module Output DC 1.5V-35V

 

Description:

This is high performance DC to DC Step Down Adjustable Power Supply Module

Based on well kwon LM2596 Switching Regulator.

Input voltage: 4.5-35V
Output Voltage: 1.25-30V (adjustable)
Output current: rated current 2A, maximum 3A (need to add heat sink),

if the output power greater than 15W, the proposed combined heat sink
Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)
Switching Frequency: 150KHz
Rectifier: Non-Synchronous Rectification
Module Properties: Non-isolated step-down module (buck)
Short circuit protection: current limiting, since the recovery
Operating temperature: Industrial grade (-40 ℃ to +85 ℃) (output power 10W or less)
Full load temperature rise: 40 ℃
Load regulation: ± 0.5%
Voltage regulation: ± 0.5%
Dynamic response speed: 5% 200uS
Size: 49 (L) * 23.5 (W) * 12.5 (H) mm (with potentiometer)

Output ripple:
Input 12V Output 5V 3A 60mV (MAX)
Input 24V Output 12V 3A 120mV (MAX)

 

直流电源采用的是变压器稳压方式的，比普通开关电源性能更好~ 型号：DX6005（60V5A）

下面是工作台展示的未测试前的热机工作：一般需要开机半个小时左右，电源和仪器测量才会比较准确！！

当然还有跟精度有关！！！

下面用福录克的17B万用表和胜利的VC9805A+测量电压如下，当然，这两款万用表的精度都没有M9712C精度高；

用此图说明测量电压精度是不错的！！！

下面一个图是负载的时候测量的电压和万用表测量的电压比较：相差有0.048V,这是大电流时线上损耗所不可避免的电压误差！！

后面我们做的测试显示的数据都是不考虑线损，直接由仪器读数来算的一个转换效率，实际转换效率比我们算的更高！！！

下面首先测量环境温度；测量一起是胜利的VICTOR303B 精度+-1.5度。

下面开始夹住LM2596MDL模块的输入输出；

本产品有反接保护，输入防反接使用SS36，动态性能更好！！下面仪器设置好以后开始测试数据界面：

以上输入24V输出5V测试效率计算：5.039*2.0168/(24*0.53)=79.9% 实际效率更高！！

以下是上图的实际测试模块温度；一般模块温度正常工作的时候最好不要超过80度，

实际使用过程中电流越大，测量温度就越高！！这个电流和温度属于正常工作的范围！！

下面是24V转12V的图示：

上图是没有带负载的时候测量显示；

上图是带负载的时候有线损的测量值；

以上输入24V输出12V测试效率计算：11.982*1.1982/(24*0.68)=88.0% 实际效率更高！！

上图是模块24V转12V时的最高温度显示；

下面是35V转24V的图示：

上图是没有带负载的时候测量显示；

上图是带负载的时候有线损的测量值；

以上输入35V输出24V测试效率计算：23.882*0.6633/(35*0.5)=90.5% 实际效率更高！！

上图是模块35V转24V时的最高温度显示；

下面是40V转30V的图示：

上图是没有带负载的时候测量显示；

上图是带负载的时候有线损的测量值；

 

以上输入40V输出30V测试效率计算：30.004*0.4999/(40*0.41)=91.5% 实际效率更高！！

 

 

上图是模块40V转30V时的最高温度显示；

 

Kindly Reminder:

As there are several part number on the title, kindly pls remark the part number you want when you send the email or make paypal.So that we can avoide make mistake.Thank you very much!

(PS:If some picture shows several products but the title only contains one,the title is the standard one,pls don’t be misleaded by the picture.)

 

 

We can't be responsible for uninsured packages. For insurance service (Having a tracking number), please contact us to add US $3.50 at the payment. We accept paypal payment only. My paypal account ID:1257784664@qq.com

 

Shipping cost cannot be combine.

We accept Paypal payment only.

 

We have been in business 8 years and only sell New original parts. Some items may not be able to be shipped in their original manufacturer packaging due to possible size restraints when preparing the items for shipment via Airmail. The buy it now price is for a small quantity. If you need to buy a large quantity of the part listed please send us an email and let us know the full quantity you need and a target price if you have one and we will try to give you a better price. We try to meet or beat ALL EBAY prices on every item. If our price is too high just let us know and we will work with you. The picture in this auction was taken in our warehouse of the part we have in stock, in some cases it may be necessary for us to ship an equivalent manufacturer of the one listed with the same part number. If you need the exact manufacturer as the one listed please email us before clicking buy it now so we can confirm how many we have of the manufacturer listed. We strive to offer the best customer service in the industry.

 

We sell Electronic Components including Capacitors, Resistors, LEDs, Transistors, Diodes, Relays, Rubber Feet, Voltage Regulators, IC's, Bridge Rectifiers, Op Amps, Potentiometers, Ferrites, Inductors, Fans, Teflon Tubing, and other hard to find parts.

 

 

Payment Method:

 

We accept paypal only;

Payment must be received in 4 days after ordering it.

Shipping information:

 

This item will be shipped worldwild by regular mail in 2 business day.

We only ship to paypal address.please give us the exact address and phone# through paypal.

Delivery time:

 

Asia countries ( 8 to 20 days)

 

UK,Ireland (8 to 15 days)

 

USA,Australia ( 10 to 20 days)

 

Western Europe(10 to 20 days)

 

Canada,Italy,Brazil and other countries(40 to 50 days)

 

Returns and Refund Policy:

 

We do our best to serve each and every customer the best we can.

You can return your items within 14 days.

Buyers are responsible for return shipping with proper packaging.

All items returned as defective will be tested-and if found defective,a replacement will be shipped immediately.

If you have any other questions,please kindly contact us.

Feedback Policy:

 

We will leave positive feedback to buyer as soon as buyer pays for the item.

 

If item(s) arrive in satisfactory condition, please take your time to leave feedback to us,we hope to win your all 5-star positive feedback.Pls DON’T leave 1, 2, 3 or 4-star Detailed Seller Ratings because they mean "you are NOT satisfied", equaling negative feedback.

 

In each transaction,if you have any problems,pls contact us.Pls Don’t leave neutral or negative feedback to us.We will strive to satisfy our clients’ request.

If some one want to cheat more money by threatening us to leave negative feedback,you won’t get it.

Service & Email:

 

MSN:polida2008@hotmail.com

email address:1257784664@qq.com

 

Warranty:

 

Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.

 

We are Dedicated to Our Customers by Providing the Best Customer service, and Building strong Relationships with our Customers, so Please Buy with Confindence.

 

please email us at 1257784664@qq.com and give us the opportunity to fix the problem.

 

Please feel free to contact us.

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