数据搜索系统,热门电子元器件搜索
  Chinese▼

Delete All
ON OFF
ALLDATASHEETCN.COM

X  

预览 PDF Download HTML

HV301_05 Datasheet(数据表) 1 Page - Supertex, Inc

部件型号  HV301
说明  Hot Swap Controller (Negative Supply Rail)
下载  20 Pages
Scroll/Zoom Zoom In 100% Zoom Out
制造商  SUTEX [Supertex, Inc]
网页  http://www.supertex.com
标志 

HV301 Datasheet(HTML) 1 Page - Supertex, Inc

 
Zoom Inzoom in Zoom Outzoom out
 1 page
background image
1
HV301/HV311
A092605
Not R
ecommended
Not R
ecom
men
ded
For Ne
w Designs!
For N
ew D
esign
s!
HV301/HV311
Hot Swap Controller
(Negative Supply Rail)
Features
±10V to ±90V Operation
Built-in “normally on” turn-on clamp eliminates components
UV/OV Lock Out & Power-on-Reset for Debouncing
Sense resistor program ground 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 PWRGD Flag Operation, <0.4mA
Sleep Mode
Small SOIC-8 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
Typical Application Circuit
Waveforms
5.00ms/div
Ordering Information
Drain
50V/div
V
IN
50V/div
Gate
5.00V/div
I
inrush
500mA/div
General Description
The Supertex HV301 and HV311 Hot Swap 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 compo-
nents. 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 moni-
tor 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
(continued on Page 3)
VDD
UV
OV
VEE
SENSE
GATE
-48V
R4
12.5mΩ
R1
487kΩ
R2
6.81kΩ
R3
9.76kΩ
Q1
IRF530
Cload
+5V
HV301/
HV311
8
3
2
5
4
COM
DC/DC
PWM
CONVERTER
1
GND
NOTES: 1. Undervoltage Shutdown (UV) set to 35V.
2. Overvoltage Shutdown (OV) set to 65V.
3. Current Limit set to ~1A.
4. CB set to 8A.
PWRGD / PWRGD
ENABLE / ENABLE
6
RAMP
7
C1
10nF
C2
-48V
0.85nF
A092605
f
o
e
t
a
t
S
e
v
i
t
c
A
a
n
g
i
S
d
o
o
G
r
e
w
o
Pl
s
n
o
i
t
p
O
e
g
a
k
c
a
P
O
S
n
i
P
8
H
G
I
HG
L
1
0
3
V
H
W
O
LG
L
1
1
3
V
H




HTML 页

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


数据表 下载




链接网址


Privacy Policy
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ]  

关于 Alldatasheet    |   广告服务   |   联系我们   |   隐私政策   |   书签   |   链接交换   |   制造商名单
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , 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