Electronic Components Datasheet Search |
|
HV302NG Datasheet(PDF) 1 Page - Supertex, Inc |
|
HV302NG Datasheet(HTML) 1 Page - Supertex, Inc |
1 / 10 page 1 Rev. D 04/17/02 Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 Fax: (408) 222-4895 www.supertex.com HV302 HV312 __________________________________________________________________________________________________________________ Initial Release Sequencing Hotswap Controllers (Negative Supply Rail) Features -10V to 90V or +10V to +90V Operation Four PWRGD Flags with Programmable Delays Integrated “normally-on” Gate Clamp eliminates components UV/OV Lock Out & Power-On-Reset (POR) for Debouncing Sense resistor programmed Circuit Breaker & Servo Limit Programmable Circuit Breaker Delay Inrush control using either: Servo or Feedback Capacitor Feedback to RAMP pin saves gate protection components 100ms Start Up Timeout Protection for Output Overload Programmable Inrush Current di/dt Control Programmable Auto-Retry (tens of seconds if desired) Auto-Retry or Latched Operation Application solution for input voltage step (diode “ORing”) Enable through Open Drain interface to UV or OV Low Power, 0.6mA Active Mode, 0.4mA Sleep Mode Small SOIC-14 Package Applications -48V Telecom and Networking -24V Cellular and Fixed Wireless Systems -24V PBX Systems Power Over LAN (IEEE802.3) Distributed Power Systems Power Supply Control +48V Servers and SANs Hotswap Control of Diode ORed Multiple Power Sources Cooling Fan Systems 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. They may be used in systems where active control is implemented in the negative lead of supplies ranging from -10V to -90V or +10V to +90V. During initial power application the external pass device is held off by a “normally-on” circuit that clamps its gate low. Thereafter UV/OV and power-on-reset work together to suppress gate turn on due to contact bounce. When stable connection has been established for the duration of a programmed time delay, the inrush current is controlled and limited to a programmed level using one of two possible methods; servo mode or drain to ramp feedback capacitor mode. When charging of the load capacitor is completed, the open drain PWRGD-A flag is asserted. Open drain PWRGD-B, PWRGD-C and PWRGD-D flags are asserted sequentially after the expiration of their respective programmed time delays. Thereafter it transitions to a low power sleep mode and continues to monitor current and input voltage. If full charging of the load capacitor is not achieved within 100ms or the circuit breaker is tripped at any time, the external pass device is turned off and all four PWRGD flags are reset to the inactive state. Thereafter a programmable auto-retry timer will hold the pass device off to allow it to cool before resetting and initiating auto- retry. The auto-retry can be disabled using a single resistor if desired. Typical Application Circuit and Waveforms VDD UV OV VEE SENSE GATE RAMP GND -48V IRF530 R4 R1 R2 R3 C1 Q1 HV302 / HV312 11 6 5 8 10 9 7 C2 1 Cload +3.3V DC/DC PWM CONVERTER COM 12 13 14 TB TC TD 2 3 4 +5V DC/DC PWM CONVERTER COM +12V DC/DC PWM CONVERTER COM -12V DC/DC PWM CONVERTER COM RTB RTC RTD 487k 6.81k 9.76k 0.0125 10nF EN / EN 100uF 0.75nF ___ ___ EN / EN ___ EN / EN EN / EN ___ NOTES: 1. Under Voltage Shutdown (UV) set to 35V. 2. Over Voltage Shutdown (OV) set to 65V. 3. Current Limit set to -1A. 4. Circuit Breaker set to 8A. PWRGD-A / PWRGD-A ________ PWRGD-B / PWRGD-B ________ PWRGD-C /PWRGD-C ________ PWRGD-D / PWRGD-D ________ |
Similar Part No. - HV302NG |
|
Similar Description - HV302NG |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |