Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

HV311 Datasheet(PDF) 1 Page - Supertex, Inc

Part # HV311
Description  Hot Swap Controller
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV311 Datasheet(HTML) 1 Page - Supertex, Inc

  HV311 Datasheet HTML 1Page - Supertex, Inc HV311 Datasheet HTML 2Page - Supertex, Inc HV311 Datasheet HTML 3Page - Supertex, Inc HV311 Datasheet HTML 4Page - Supertex, Inc HV311 Datasheet HTML 5Page - Supertex, Inc HV311 Datasheet HTML 6Page - Supertex, Inc HV311 Datasheet HTML 7Page - Supertex, Inc HV311 Datasheet HTML 8Page - Supertex, Inc HV311 Datasheet HTML 9Page - Supertex, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 17 page
background image
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
HV311
Features
10 to 90V operation, positive or negative
supply
UV/OV lock out & power-on-reset
Circuit breaker
100ms startup timer
Automatic retry or latched operation
Low Power, 400µA sleep mode
Active low power good
8-Lead SOIC package
Applications
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
General Description
The Supertex HV311 Hot Swap Controller provides inrush current limiting and
other power supply support functions for hot swap equipment. Current limiting is
provided by control of an external MOSFET which is placed in the return line of
the power supply connection. Placement in the return allows use of an N-channel
MOSFET without the need for high side driving.
An internal clamp at the GATE pin activates when full bias for the HV311 is not
available, thus keeping the MOSFET in the off-state during the initial insertion
phase. As soon as adequate bias is available for the main control circuits, the UV
(undervoltage) and OV (overvoltage) pins check for normal operating voltage on
the power supply input.
Once normal operating voltage is present, the GATE voltage for the external
MOSFET ramps up at a constant rate. The rate is controlled by the value of an
external capacitor placed at the RAMP pin. At some point the external MOSFET
channel is enhanced, allowing power supply current to flow, thereby energizing
downstream power supply capacitors.
During the GATE ramp up the power supply current is monitored with the aid
of an external sense resistor which forces reduction in the ramp rate when the
power supply current reaches a set limit. The limit is set by the value of the
external sense resistor and the threshold of the current sense amplifier (50mV).
Once inrush current subsides, the GATE voltage resumes its rise to the output
voltage of an internal regulator V
REG, with an output voltage ranging from 8.5
to 12V. When GATE is within 1.2V of V
REG, GATE is pulled high to VREG with an
internal switch, the open-drain PWRGD pin pulls low, and the HV311 enters a
low power mode.
The HV311 includes a start-up timer and a circuit breaker function to protect
the MOSFET from excessive power dissipation. The start-up timer trips when
the start-up phase exceeds 100ms. The circuit breaker trips at double the
current limit threshold (100mV). Upon tripping of either the start-up timer or
the circuit breaker the MOSFET is turned off, and the PWRGD pin becomes
high impedance. Thereafter, a programmable automatic retry timer allows the
MOSFET to cool down before resetting and restarting. The automatic retry can
be disabled by adding an external resistor at the RAMP pin (about 2.5MΩ, see
applications section).
Typical Application Circuit
Hot Swap Controller
VDD
UV
OV
VEE
SENSE
GATE
-48V
R4
12.5mΩ
R1
487kΩ
R2
6.81kΩ
R3
9.76kΩ
Q1
IRF530
C
LOAD
+5.0V
HV311
8
3
2
5
4
COM
DC/DC
PWM
CONVERTER
1
GND
NOTES:
1. Undervoltage threshold (UV) set to 35V.
2. Overvoltage threshold (OV) set to 65V.
3. Startup current set to 4A.
4. Circuit breaker set to 8A.
5. 100ms max startup time.
6. Automatic retry enabled.
PWRGD
ENABLE
6
RAMP
7
C1
10nF
-48V


Similar Part No. - HV311

ManufacturerPart #DatasheetDescription
logo
Supertex, Inc
HV311 SUTEX-HV311 Datasheet
664Kb / 21P
   Hotswap, Controllers with Circuit Breaker
HV311 SUTEX-HV311 Datasheet
989Kb / 20P
   Hot Swap Controller (Negative Supply Rail)
HV311LG SUTEX-HV311LG Datasheet
664Kb / 21P
   Hotswap, Controllers with Circuit Breaker
More results

Similar Description - HV311

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1642 LINER-LTC1642 Datasheet
147Kb / 12P
   Hot Swap Controller
LTC4218 LINER-LTC4218_15 Datasheet
318Kb / 18P
   Hot Swap Controller
LTC1421-2.5 LINER-LTC1421-2.5_15 Datasheet
334Kb / 24P
   Hot Swap Controller
LTC1421 LINER-LTC1421 Datasheet
464Kb / 24P
   Hot Swap Controller
LTC4218 LINER-LTC4218 Datasheet
192Kb / 16P
   Hot Swap Controller
LTC1642A LINER-LTC1642A_15 Datasheet
237Kb / 16P
   Hot Swap Controller
LTC1642A LINER-LTC1642A Datasheet
231Kb / 16P
   Hot Swap Controller
LTC4211 LINER-LTC4211_12 Datasheet
322Kb / 40P
   Hot Swap Controller
LTC1422 LINER-LTC1422 Datasheet
273Kb / 16P
   Hot Swap Controller
logo
Summit Microelectronics...
SMH4042 SUMMIT-SMH4042 Datasheet
225Kb / 28P
   Hot Swap??Controller
logo
Linear Technology
LTC1422 LINER-LTC1422_15 Datasheet
203Kb / 16P
   Hot Swap Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


Datasheet Download

Go To PDF Page


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


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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