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Supertex inc.
HV7100
24/48V Fan Driver/Controller With High-Side Drive
Features
►► High-side drive allows use of tachs ►► Direct interface to host controller ►► Noise-immune linear speed control ►► 4-bit digital speed control ►► Operates from single +24/+48V supply ►► Programmable PWM frequency ►► Undervoltage lockout
Applications
►► 24/48V chassis cooling tray ►► Servers ►► SAN equipment ►► Cellular and fix wireless systems ►► 24/48V PBX system ►► Base stations
General Description
The HV7100 is an integrated PWM speed controller for driving 24 and 48VDC fans. The features and benefits provided by the HV7100 make driving fans simple and low cost. The HV7100 drives a high side external P-channel FET, allowing the use of fans having a ground-based tachometer signal.