HV302 Supertex Inc, HV302 Datasheet
HV302
Related parts for HV302
HV302 Summary of contents
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... Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 Fax: (408) 222-4895 www.supertex.com (Negative Supply Rail) General Description The HV302 and HV312 Hotswap Controllers perform current limiting, circuit breaker protection, over and under voltage detection power management functions during insertion of cards or modules into live backplanes and connectors ...
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... HV302 / HV312 Package Options 14 Pin SOIC HIGH HV302NG LOW HV312NG Units Conditions -48V, Mode = Limiting -48V, Mode = Sleep Low to High Transition V High to Low Transition 1.9V ...
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... This voltage depends on the characteristics of the external N-Channel MOSFET. *IRF530 is a registered trademark of International Rectifier. Pinout PWRGD-D (HV302) ________ 1 PWRGD-D (HV312) PWRGD-C (HV302) ________ 2 PWRGD-C (HV312) PWRGD-B (HV302) ________ 3 PWRGD-B (HV312) PWRGD-A (HV302) ________ 4 PWRGD-A (HV312 VEE 7 PWRGD Logic Model Condition INACTIVE (Not Ready) HV302 ...
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... The insertion can result in high inrush currents that can cause damage to connector and circuit cards and may result in unacceptable disturbances on the system backplane power rails. The HV302 and HV312 are designed to facilitate the insertion of these circuit cards or connection of terminal equipment by eliminating these inrush currents and powering up these circuits in ...
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... OV limits (including hysteresis) will cause an immediate reset of all internal circuitry. When the input supply voltage returns to a value within the programmed UV and OV limits a new start up sequence will be immediately initiated. 5 HV302 / HV312 and all four PWRGD flags are reset. EE The auto-retry can be Rev. D ...
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... Where V Up Threshold points. Then And Therefore, the circuit will start when the input supply voltage is in the range of 38.29V to 59.85V. 6 HV302 / HV312 Under Voltage/Over Voltage Operation 1. UVH EEUV(on ...
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... SENSE pin is raised 100mV above the V the sense resistor may be calculated from the following equation: For a 2A circuit breaker The power rating of the sense resistor must be greater than or equal SENSE = 2.5 A. SINK 7 HV302 / HV312 SINK V 4 ...
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... If control of PWRGD active delay is the critical system parameter, then choose a value for t and use the following equation: PWRGD PWRGD A RAMP C RAMP INT GS (lim ) it 8 Rev. D HV302 / HV312 C RAMP RAMP resistor is zero. SENSE SENSE 2 . 04/17/02 ...
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... The respective delay time is defined by the following equation: and Where Combining the above two equations and solving for For a delay time of 200ms we get: For a delay time of 5ms we get: 9 HV302 / HV312 = 3k TD 255 OSC ...
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... Hotswap circuits in parallel, since they act as current sources during the load capacitor charging time when the circuits are in current limit. For this application the HV302 with active high PWRGD is recommended where the PWRGD pins of multiple Hotswap circuits can be connected in a wired OR configuration ...