HV301

HV301/HV311 HV301 HV311 Demo Kit Available Hotswap, Controllers with Circuit Breaker (Negative Supply Rail) 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 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 ca...