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Power Supply
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Engineering & Manufacturing > Electrical

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The client has made the following changes to the job.

Description
Date

Job awarded.

Feb 13, 2011

Bidding period extended.

Feb 9, 2011
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Job Description

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  • Posted: Wed, Jan 26, 2011
  • Time Left: Closed
  • Location: Anywhere
  • Client prefers freelancers from:
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    a different location.

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  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
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  • W9 Not Required
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1- Find a standard isolated DCDC module
2- Design an isolated DCDC from ICs and discrete components

Specification:
In Voltage: preferably 5V DC, in the worst case 12V DC
Output Voltage: 150V
Output power: 10W and 20W (Provide 2 different versions)
Isolation: 500V
Voltage ripple: in the range of 100mV
Main issue: compactness, and if possible, flat is better than cubic.
Next issue: price (in the case of an integrated module found on the market).

If there is no significant Vout values discrepancy, it is possible to split the power between 2 or 4 different modules.

Solution must have a better power/volume ratio than:
1st example: 4 units of NMH0524DC in serial (  [obscured]  -ps.com/data/power/ncl/kdc_nmh0524dc.pdf)
2nd example: 1 unit of A10-150 from   [obscured]  /

Scope:
Propose for 2 solutions (modules; ICs and discrete) with each 10W and 20W variation:
- Check the availability of components
- Schematic with Orcad (Cadence 16.3) AND PDF.
- BOM
- List up the efficiencies.
Placem...

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Job ID: 22765881
Proposals
Avg $ | High $ | Low $ — Show Pricing
  • Submit Date (Latest)

 Armenia  |  
Winner
Me: FW design in Verilog/SystemVerilog. Have also C++, perl skills. Electronics since 1978, HDL since 1998. Industry: ATE. Group: digital + analog...
4
  |  
 5.0   |  Private   |  0 Jobs
Bid ID: 22999559  |  Submitted: Feb 11, 2011 17:14 ET 
Delivery
Within 1 week
$98.63

 United States  |  
We are professional Electrical and Computer Engineers with over 20 years of experience. We specialize in rapid prototyping and end to end...
1
  |  
 0.0   |  Private   |  0 Jobs
Bid ID: 22822330  |  Submitted: Jan 30, 2011 15:41 ET 
Proposal SEALED

 Armenia  |  
Experienced in design of power electronics circuit, motor controller, power supply and motor, and etc. LabView, MultiSim, WorkBench, P-CAD, OrCad...
1
  |  
 3.6   |  $320 Earnings   |  0 Jobs
Bid ID: 22795809  |  Submitted: Jan 28, 2011 02:22 ET 
Proposal SEALED

0 to 1
1
  |  
 0.0   |  $0 Earnings   |  0 Jobs
Bid ID: 22775027  |  Submitted: Jan 26, 2011 17:03 ET 
Proposal SEALED
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