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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: YK
  • Model Number: YK-DD12S19 Series
  • Output Power: 1 - 50W
  • Output Type: Single
  • Size: 74*74*32mm
  • Weight: 300g
  • Input Voltage: 12vdc
  • Output Voltage: 19vdc
  • Type: DC/DC Converters
  • Output Frequency: /
  • Output Current: 5a 8a 10a15a
  • Input voltage range: DC 9-17V
  • Output voltage: 19Vdc
  • Frequency: 300-360HZ
  • Measurement(W*H*D)(MM): 74*32*74
  • NW: 300G
  • Product name: 12VDC step up to 19VDC
  • contact: Ms. Susan Yu
  • Skype ID: susan.yucoo
  • Mobile/Wechat/Whatsapp/Viber/Imo ID: 0086-15088057840
  • TYPE: variable dc to dc converter 12vdc to 19vdc

Packaging & Delivery

Packaging Details: carton box---variable dc to dc converter 12vdc to 19vdc
Delivery Detail: 1-3 working days after payment confirm

Type: variable dc to dc converter 12vdc to 19vdc


Contact person--- Ms. Susan Yu

Skype ID---susan.yucoo

QQ ID: 1827354602

Mobile/Wechat/Whatsapp/Viber/Imo ID--- 0086-15088057840



Product Description

 variable dc to dc converter 12vdc to 19vdc 


YK-DD12S19 Series



DC 12V

Input voltage range

DC 9-17V




Current Range(A)





Output Power(W)







Soft start time


Conversion efficiency


Working temperature


Load regulation

± 2%

Voltage regulation







Input (Red +, Black -), output (Yellow +,Black -)


Over-current protection

Overheat protection

Short-circuit protection and automatic recovery

Full waterproof potting



Q: Regard as constant voltage and constant current DC-DC Converter

  1. A.      Constant voltage DC-DC Converter

For example:

  1. 1.       24vdc-12vdc 10A, 12vdc output is fix, but the current output is automatic adaptive base on the load.
  2. 2.       If you connect the load not work at 12vdc , the dc converter will be burn
  3. B.      Constant Current DC-DC Converter

For example:

  1. 1.       24vdc-12vdc 10A , 10A output is fix, but the voltage output is automatic adaptive base on the load.
  2. 2.       If you connect the load not work at 10A , the dc converter will be burn


Q:Isolated & non-isolated DC-DC Converter

  1. 1.       Isolated DC Converter is no any interference, it is suitable for sophisticated equipment and there is no any ripple
  2. 2.       Isolated DC Converter with ripple
  3. 3.       DC –DC Converter we design is non-isolated


Q:Step down & Boost & Automatic Step down and Boost DC-DC Converter

  1. 1.       Step down DC-DC Converter--Input voltage must be more than 2V/more of output voltage

For example:24Vdc to 12Vdc 10A

  1. 2.       Boost DC-DC Converter--Input voltage must be less than 2V/more of output voltage

For example :5Vdc to 12Vdc 10A

  1. 3.       Automatic Step down and Boost DC-DC Converter--- output voltage between the input voltage range

For example: 9-14Vdc to 12Vdc 10A

When 9VDC Input, it can support output 12V; When 14Vdc input, it can support output 12Vdc also; input voltage between 9-14V constantly beating the same can be stabilized output 12V;


Question:  Can you customize USB dc dc converter?

Answer:  Yes.


Question:  Can you customize multi-output dc dc converter?

Answer: For now, because of the Yucoo dc dc converter’s design and it’s capacity, we can make 2-channles as max output.


Questions: What is the difference between the PCB case type and the Aluminum case type?


  1. 1.       Aluminum case type is waterproof
  2. 2.       The PCB case type is non- waterproof, but with Lightweight.


Question: Can you make the dc dc converter with adjustable output volatage?

  1. NO.  We can only make it stable output.


Question: Can you make the dc dc converter with adjustable output current?

Answer: NO.  We can only make adjustable output current mode.  For example one 0-10A model dc dc converter,  if you connect with right load, all things will goes well. No need to make stable output.


Question : Can make Automatic Step up and down voltage dc converter?



We can customize 12V-12V &24V-24V Automatic Step up and down voltage dc converter


Question :What is the biggest power you can customize for this small size dc converter now?


360W.The biggest power we can customize for this kind product is not more than 360W.


Question:  Does this kind dc converter has reverse polarity protection on input?


No. We don’t have it ,but we are trying to achieve.


Question: what does the step down and boost dc converter will apply for


  1. 1.         Our products are widely used in automotive, posts and telecommunications, communications, electricity, coal, aerospace, defense, surveillance systems, railway signals, medical equipment, instruments and meters, LED displays, cable TV and other fields. If you can not find a suitable model,
  2. 2.         our technical engineers will be based on your actual needs, corresponding to the rapid power solutions. I hope that we can become a long-term partners. 



DC DC Features
  • Constant voltage design
  • SMT Process
  • Non-Isolated Module
  • 2:1 wide input range
  • Built-in EMI filter, low ripple noise
  • 100% full load burn-in test
  • Certificates :CE
  • Waterproof level : IP67
  • Protections: Short circuit/Over load /voltage / Automatic recovery work
  • Ultra compact size, light weight , high reliability
  • 1 year warranty, lifetime up to 100,000 hours



DC DC Similar others



Our Services

Our Service/Why Choose US

  • Service .........................RMA(24/7Technical Support), OEM, ODM
  • Quality......................... Quality is our culture , Less than 0.5% of failure rate,
  • Warranty......................Up to 12 months
  • Price.............................Factory Price! Cut down the cost you paid to the middle man
  • Professional.....Founded in 2003, Produce Power Supply  products for 13years in China.
  • Reliable.........................One of the Grey Hair of power supply business manufacturers in China
  • Assurance......................Any problem of quality , It would Refund the payment to buyer
  • Delivery........................After receive payment 1-10 working days
  • Payment........................PAYPAL. Western union, Wire Transfer, Trade assurance, LC and so on
  • YUCOO Power Supply Group.........Your Power Supply system, We Design and support!


Company Information

YUCOO Power Supply Group Information

Part 1. YUCOO History & Main Product

YUCOO Network Equipment Co.,LTD established in 2003 is one of the leading manufacturer in China specializing in designing , researching , developing  producing and selling high-frequency switching power supply , dc/ac power inverter. Frequency converter, adjustable power supply, battery charger, power distribution unit , rectifier system , dc-dc converter and so on.

YUCOO products use in different field

YUCOO power supply products are widely used in China Telecom, China Mobile, China Satellite Communication, and airport from all over the world, as well as Army, Public Security, Irrigation Works, Highway, and win many customers’ trust with good quality and services.


Part 2. YUCOO operation guideline

Our company provides not only different kind of power supply equipment for large telecom operators, but also power supplies for the relevant supporting manufactures

We strict implement the operation guideline of “Leading Technology, Reliable Quality, Satisfactory Service and Customer First” and our products have successively passed ISO9001 Quality System Certifications and formed the perfect quality management system.


Part 3. YUCOO Welcome for your cooperation

Welcome to cooperate with us and realize win-win strategy together. As we have an excellent team which is experiences with market and had strong technical capability to customize cost effective, we also can customize any specification power supply as you request .



Contact Us Now

♠♠♠♠♠ Contact Person-- Susan Yu

♠♠♠♠♠ Skype ID-- susan.yucoo 

♠♠♠♠♠ Whatspp--+86-15088057840 

♠♠♠♠♠ QQ--1827354602 

♠♠♠♠♠ Wechat--FFsusanyu

Transaction History of the Supplier

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Transaction Details

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China (Mainland)
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17 Transactions 60,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.