Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Cooling of modern MOSFET transistor cases as Power-SO8

Status
Not open for further replies.
B

berger.h

Member level 5
Joined
Sep 30, 2016
Messages
93
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
2,355
I designed high current power supply with Synchronous Buck DC-DC Controller on 250kHz,
It requires use modern MOSFETS and this are typical in case as **broken link removed**
I calculate power lost on high side MOSFET typical 3.9W and maximum 6,4W.

My question is how to cool?
Via PCB in impossible cool it.
Is need any heatsink and fan (forced air circulation), bud what heatsink?
Glued on Power-SO8 or on buttom side of PCB?
For classical cases there is a wide range of heatsink pot for new case as Power-SO8 not
 

You will use it as shown in the picture.A sufficiently large copper pour plane and the IC ( LF-PAK) will be soldered onto it.
Another option is to solder LF-PAK case in vertical and mount it on a proper heat-sink with a steel clips.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top