HV311, HV311LG, HV312NG Selling Leads, Datasheet
MFG:HIT Package Cooled:SOP-8 D/C:05+
HV311, HV311LG, HV312NG Datasheet download
Part Number: HV311
MFG: HIT
Package Cooled: SOP-8
D/C: 05+
HV311, HV311LG, HV312NG
- Table of contents:
Info of HV311
Info of HV311LG
Info of HV312NG
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About HV311
PDF/DataSheet Download
Datasheet: HV311
File Size: 679967 KB
Manufacturer: SUTEX [Supertex, Inc]
Download : Click here to Download
About HV311LG
PDF/DataSheet Download
Datasheet: HV311LG
File Size: 679967 KB
Manufacturer: SUTEX [Supertex, Inc]
Download : Click here to Download
About HV312NG
PDF/DataSheet Download
Datasheet: HV312NG
File Size: 633754 KB
Manufacturer: SUTEX [Supertex, Inc]
Download : Click here to Download
HV311 General Description
The Supertex HV301 and HV311 Hotswap Controllers provide control of power supply connection during insertion of cards or modules into live backplanes. They may be used in systems where active control is implemented in the negative lead of supplies ranging from ±10V to ±90V.
During initial power application the gate of the external pass device is clamped low to suppress contact bounce glitches by a "normally on" circuit which does not require initialization of the IC. Thereafter the UV/OV supervisors and power-on-reset work together to suppress gate turn on until mechanical bounce has ended. The HV301/311 then control the current inrush limit to a programmed level using one of two possible methods, i) servo control or ii) a drain to ramp capacitor. The above methods eliminate the need for extra hold-off or current limiting components. The devices also include an electronic circuit breaker, programmed by a sense resistor.
After the load capacitance has fully charged, the HV301/311 will transition into a low power mode, and enable the open drain PWRGD. In low power mode the HV301/311 continues to monitor the input voltage and monitor the current level. If a load fault occurs, the electronic circuit breaker will trip, the pass element will be turned off, and the PWRGD will return to an inactive state. Thereafter a programmable auto-retry timer will hold the device off to allow the pass element to cool before resetting and restarting. The auto-retry can be disabled using a single resistor if desired.
The HV301/HV311 includes a current mode servo-circuit which can be used as a return to limit during input voltage steps such as would be seen in a diode "ORed" situation when power switches back to regulated supply from battery operation. The HV301/HV311 allow independent programming of the trigger level of this phenomenon so that it may be set at a different level to the current limit level if desired. Under all circumstances the maximum servo period is limited to 100ms to protect the pass element.
HV311 Maximum Ratings
VEE reference to VDD pin +0.3V to -100V
VPWRGD referenced to VEE Voltage -0.3V to +100V
VUV and VOV referenced to VEE Voltage -0.3V to +12V
Operating Ambient Temperature -40 to +85
Operating Junction Temperature -40 to +125
Storage Temperature Range -65 to +150
VPWRGD referenced to VEE Voltage -0.3V to +100V
VUV and VOV referenced to VEE Voltage -0.3V to +12V
Operating Ambient Temperature -40 to +85
Operating Junction Temperature -40 to +125
Storage Temperature Range -65 to +150
HV311 Features
` ±10V to ±90V Operation
` Built-in "normally on" turn-on clamp eliminates components
` UV/OV Lock Out & Power-on-Reset(POR) for Debouncing
` Sense resistor programmed circuit breaker
` Programmable circuit breaker holdoff
` Inrush control using either: i) servo or ii) feedback cap
` Feedback to Ramp pin means no Gate Clamp needed
` Application solution for input voltage step (diode "ORing")
` Programmable Auto-Retry (tens of seconds if desired)
` Auto-Retry or Latched Operation
` Enable through Open Drain interface to UV or OV
` Low Power, <0.6mA , <0.4mA Sleep Mode
` PWRGD Flag
` Small SOIC-8 Package
` Built-in "normally on" turn-on clamp eliminates components
` UV/OV Lock Out & Power-on-Reset(POR) for Debouncing
` Sense resistor programmed circuit breaker
` Programmable circuit breaker holdoff
` Inrush control using either: i) servo or ii) feedback cap
` Feedback to Ramp pin means no Gate Clamp needed
` Application solution for input voltage step (diode "ORing")
` Programmable Auto-Retry (tens of seconds if desired)
` Auto-Retry or Latched Operation
` Enable through Open Drain interface to UV or OV
` Low Power, <0.6mA , <0.4mA Sleep Mode
` PWRGD Flag
` Small SOIC-8 Package
HV311 Typical Application
· -48V Central Office Switching
· -24V Cellular and Fixed Wireless Systems
· -24V PBX Systems
· Line Cards
· -48V Powered Ethernet for VoIP
· Distributed Power Systems
· Power Supply Control
· +48V Storage Networks
· Electronic Circuit Breaker
· -24V Cellular and Fixed Wireless Systems
· -24V PBX Systems
· Line Cards
· -48V Powered Ethernet for VoIP
· Distributed Power Systems
· Power Supply Control
· +48V Storage Networks
· Electronic Circuit Breaker
HV311 Connection Diagram
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