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PWM Fan Controller

2 years ago 362
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Description

A PWM fan driver for Vovlo high current fans. Converts request for fan from ECM to a PWM signal. The fan has high current mosfets internal to the fan to deal with the signal. It works on the bench - I don't know how it works in the application as of 6/26/2018.

Documents

Sheet_1

PWM Fan Board

BOM

ID Name Designator Footprint Quantity
1 TL494CN U1 DIP-16 1
2 115k R2 AXIAL-0.5 1
3 51k R3,R4 AXIAL-0.5 2
4 1k R5,R6,R7,R8,R11 AXIAL-0.5 5
5 68k R9 AXIAL-0.5 1
6 10k R10 AXIAL-0.5 1
7 0.1uF C1 RAD-0.1 1
8 22uF C2 CAP-D6.3XF2.5 1
9 WJ2EDGVC-5.08-3P P1 WJ2EDGVC-5.08-3P 1
10 WJ2EDGVC-5.08-2P P2 WJ2EDGVC-5.08-2P 1
11 50KΩ R12 RES-ADJ_3266W 1

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