Some low profile AC-DC manufacturers:

Martek
Vicor
Lambda
Pico

None of them are cheap; but if you want low profile, PCB mount, high 
reliability; then these are some viable suppliers.

Chris Maxwell | Design Engineer - Optical Division
email [email protected] | dir +1 315 266 5128 | fax +1 315 797 8024

NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA
web www.nettest.com | tel +1 315 797 4449 | 




> -----Original Message-----
> From: Peter Merguerian [SMTP:[email protected]]
> Sent: Tuesday, September 17, 2002 5:24 AM
> To:   'Gert Gremmen'; Hans Mellberg; [email protected]
> Subject:      RE: PCI low profile dc-dc
> 
> 
> Gert and Hans,
> 
> In Hans's e-mail he specifies dc-dc convertors. In your e-mail, you specify
> ac-dc convertor.  I assume you mean mains ac - dc.
> 
> For dc-dc there you need not purchase a medical grade convertor since I
> assume you will have reinforced insulation between the patient aplied part
> and the ac mains.
> 
> For ac-dc, most convertors in the market are encapsulated and approved to
> ITE requirements. Some are approved for operational insulation between input
> and output, others for basic insulation between input and output and most
> for reinforced insulation between input and output. Per IEC 60 601-1 there
> are no internal creepage requirements and no long term aging tests for the
> encapsulation like in IEC 60 950. If you choose a regular ITE ac-dc which
> meets 4000 Vac dielectric strength betwen input and output and make sure you
> have the clearance/creepage requirements for reinforced insulation between
> input and output (8.0 mm clearance/creepage), then you have nothing to worry
> about for isolation between patient applied parts and the mains. Of course,
> leakage current is also an issue you have to take into consideration.
> 
> 
> 
> This e-mail message may contain privileged or confidential information. If
> you are not the intended recipient, you may not disclose, use, disseminate,
> distribute, copy or rely upon this message or attachment in any way. If you
> received this e-mail message in error, please return by forwarding the
> message and its attachments to the sender.
> 
> 
> 
> 
> 
> 
> PETER S. MERGUERIAN
> Technical Director
> I.T.L. (Product Testing) Ltd.
> 26 Hacharoshet St., POB 211
> Or Yehuda 60251, Israel
> Tel: + 972-(0)3-5339022  Fax: + 972-(0)3-5339019
> Mobile: + 972-(0)54-838175
> http://www.itl.co.il
> http://www.i-spec.com
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Gert Gremmen [mailto:[email protected]]
> Sent: Saturday, September 14, 2002 12:07 PM
> To: Hans Mellberg; [email protected]
> Subject: RE: PCI low profile dc-dc
> 
> 
> 
> May I add:
> 
> Looking for a low profile ac-dc on board converter having a decent
> medical approval i.e. more then basic insulation between primary
> and secundary. Any suggestions for a manufacturer ? My client
> is located in Malaysia .
> Gert Gremmen
> ce-test
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Hans Mellberg
> Sent: vrijdag 13 september 2002 21:22
> To: [email protected]
> Subject: PCI low profile dc-dc
> 
> 
> 
> I am designing a PCI card that requires the use of several on-board dc-dc
> converters
> for 24V, 48V and a varialble V. Any suggestions to sources are greatly
> appreciated,
> Thanks in advance
> 
> 
> =====
> Best Regards
> Hans Mellberg
> Regulatory Compliance & EMC Design Services Consultant
> By the Pacific Coast next to Silicon Valley,
> Santa Cruz, CA, USA
> office:831-454-9450, cell:408-507-9694, fax:831-454-0755
> 
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