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Sonsivri > Electronics > Hardware and Tools (Moderator: bbarney) > 75volt to 24V/10A
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arash_tah
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« on: May 19, 2009, 10:17:05 22:17 »
Hi every body
I need a buck converter to convert 75volt to 24volt 10amp. Can any one help me?
I got into trubble please help me
Tanx
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Taner
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« Reply #1 on: May 21, 2009, 07:17:28 19:17 »
Hi arash_tah
try with NCP1200, PWM current-mode controller, Fixed frequencies -40kHz, 60kHz and 100kHz,
Vin=30-500Vdc, External MOSFET transistor.
Look at attached file for some additional informations.

Best regards.
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arash_tah
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« Reply #2 on: May 23, 2009, 05:33:08 17:33 »
Thanx Taner good idea , but very low power. it is a buck converter for a few miliamp not 10 amp what I am looking for
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Taner
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« Reply #3 on: May 24, 2009, 08:24:23 20:24 »
Hi arash_tah,
yes, but this circuit is only an idea for your project.
You can change some components to adapt it, like voltage feedback circuit components (for Vout=24V).
MOSFET transistor Q1, current sense resistor R4, diodes D1 and D3, input and output inductors
L1, L2 and L3 (for Iout=10A).

Best regards.
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