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Document 318
Indicates required field
DC-DCTransformerDesignWorksheet
Name: ______________________________________ Company: ____________________________________________
Street address:_____________________________________________________________________________________
City: ____________________________ State:________ _ Country: _________________ Postal code: ______________
Email: ___________________________________ Phone: ______________________ Fax: _________________________
General application for this product:_____________________________________________________________________
Prototype quantity: ________________________________ Date needed:______________________________________
Projected annual quantity: _________________ Budgetary per piece target price (USD): $_______________________
Topology
 Flyback  Continuous  Discontinuous
 Forward converter  Two-switch forward  Active clamp forward  Push pull
 Full bridge  Half bridge Other __________________________
Electrical
Primary
Switching frequency (kHz): ____________
Input voltage (Vdc): Min _______ Nom _______ Max _______
Peak Input current (A):
Inductance (µH):
Schematic
_______________
Min _______ Nom _______ Max _______
Duty cycle max (%): _______
Leakage inductance (µH): Max _______
Secondary(ies)
Voltage (V): If you have a schematic or
other design criteria, please
attach it to the email when
submitting this form.
S1 S2 S3S4 S5S6
__________________________________________
✔ Current (A):  Peak 
RMS
______________ ______________ ______________
DC Resistance (Ohms): _______ _______
_______ _______
_______ _______
Diode drop (V): _______ _______
_______ _______
_______ _______
Dielectric withstanding voltage (V): __________  DC  RMS Time (seconds): ______________
Temperature rise, maximum (°C): ________
Ambient temperature range (°C): ________ to ________
Physical
Mounting type:  Surface mount  Through hole
Maximum size (mm):
Other
Length _________ Width _________ Height _________
Agency requirement: IEC ________ UL ________ CSA ________ Other: ____________________
Insulation class:  Functional  Basic  Supplementary  Reinforced
Special testing conditions (altitude, accelerated life, etc.): ___________________________________________________________________________________
___________________________________________________________________________________
Additional information:
___________________________________________________________________________________
___________________________________________________________________________________
Submit
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 318 Revised 10/13/15
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.