DataSheet.jp


Datasheet HV101X PDF ( 特性, スペック, ピン接続図 )

部品番号 HV101X
部品説明 Inrush Current Limiter Controllers
メーカ Supertex Inc
ロゴ Supertex  Inc ロゴ 
プレビュー
Total 8 pages
		
11

No Preview Available !

HV101X Datasheet, HV101X PDF,ピン配置, 機能
Supertex inc.
3-Pin Hotswap,
Inrush Current Limiter Controllers
(Negative Supply Rail)
HV101
Features
►Pass element is only external part
►No sense resistor required
►Auto-adapt to pass element
►Short circuit protection
►UV & POR supervisory circuits
►2.5s auto retry
►±10V to ±72V input voltage range
►0.6mA typical operating supply current
►Built in clamp for AC path turn-on glitch
General Description
The HV101 is a 3-pin hotswap controller available in the SOT-
223 package, which requires no external components other
than a pass element. The HV101 contains many of the features
found in hotswap controllers with 8 pins or more, and which
generally require many external components. These features
include undervoltage (UV) detection circuits, power on reset
(POR) supervisory circuits, inrush current limiting, short cir-
cuit protection, and auto-retry. In addition, the HV101 uses a
patent pending mechanism to sample and adapt to any pass
element, resulting in consistent hotswap profiles without any
programming.
Applications
►-48V central office switching (line cards)
+48V server networks
+48V storage area networks
+48V peripherals, routers, switches
+24V cellular and fixed wireless (bay stations,
line cards)
►+24V industrial systems
►+24V UPS systems
-48V PBX & ADSL systems (line cards)
Distributed power systems
Powered ethernet for VoIP
Typical Application Circuit
GND
-48V
VPP
GATE
VNN
HV101
IRF530
400µF
DC/DC
Converter
+5.0V
COM
Doc.# DSFP-HV101
B060513
Supertex inc.
www.supertex.com

1 Page



HV101X pdf, ピン配列
HV101
DC Electrical Characteristics (cont.)
Sym Parameter
Min Typ Max Units Conditions
Example Electrical Results (Using IRF530)
ILIM Max inrush current during hotswap
ILIM Max inrush current during hotswap
ILIM Max inrush current during hotswap
ISHORT Max current Into a short
tSHORT
ΔGATE
tHS
Shorted load detect time
Initial rate of rise of GATE
Hotswap period to full GATE value
- 1.4 -
A
IRF530 external MOSFET,
CLOAD = 100μF
- 2.5 -
A
IRF530 external MOSFET,
CLOAD = 200μF
- 3.1 -
A
IRF530 external MOSFET,
CLOAD = 300μF
- 4.0 -
A
IRF530 external MOSFET,
RLOAD = <<1.0
- 1.0
ms
IRF530 external MOSFET,
RLOAD = <<1.0
- 2.5 - V/ms IRF530 external MOSFET, any CLOAD
- 12.5 -
ms IRF530 external MOSFET, any CLOAD
Typical Waveforms
Doc.# DSFP-HV101
B060513
Supertex inc.
3 www.supertex.com


3Pages


HV101X 電子部品, 半導体
HV101
every 2.5s, providing sufficient time for the pass element to
cool down after each attempt.
All of the above are possible with a minimum number of ex-
ternal components.
i) To adjust inrush current with an external component
simply connect a capacitor (CFB) from drain to GATE of
the MOSFET. The inrush calculation then becomes:
IINRUSH(PEAK) = (CFB + CISS)/(CRSS + CFB) * 2.5e3 * CLOAD
Note that a resistor (approximately 10KΩ) needs to be
added in series with CFB to create a zero in the feedback
loop and limit the spurious turn on which is now enhanced
by the larger divider element.
Calculating Inrush Current
As can be seen in the diagram below, for a standard pass
element, the HV101 will normalize the hotswap time period
against load capacitance. For this reason the current limit will
increase with increasing value of the load capacitance.
ii) To increase undervoltage lockout simply connect a Zener
diode in series with the VPP pin.
iii) If the VPP rises particularly fast (>48e6V/s) then it may be
desirable to connect a capacitor from GATE to source
of the MOSFET to provide a path for the power applica-
tion transient spike, which is now too fast for the internal
clamping mechanism.
iv) To limit the peak current during a short circuit, a resistor
in series with the source of the MOSFET may help.
Inrush can be calculated from the following formula:
IINRUSH(PEAK) = (CISS / CRSS) * 2.5e3 * CLOAD
This is a surprisingly consistent result because for most
MOSFETs of a particular type the ratio of CISS / CRSS is rela-
tively constant (though notice from the plot that there is some
variation) even while the absolute value of these and other
quantities vary. Based on this, the inrush current will vary
primarily with CLOAD. This makes designing with the HV101
particularly easy because once the pass element is chosen,
the period is fixed and the inrush varies with CLOAD only.
Implementing PWRGD Control
Due to the HV101’s small footprint, it is possible to create an
open drain PWRGD signal using external components and
still maintain a size comparable with the smallest hotswap
controllers available elsewhere. To accomplish this an ex-
ternal MOSFET may be used in conjunction with the GATE
output. Simply use a high impedance divider (10MΩ) sized
so that the open drain PWRGD MOSFET threshold will only
be reached once the HV101’s GATE voltage rises well above
the current limit value required by the external MOSFET pass
device. Alternatively a Zener diode between the GATE output
and the PWRGD MOSFET GATE set at a voltage higher than
the maximum pass element Vt will also work.
HV101
Programming the HV101
The HV101 requires no external components other than a
pass element to provide the functionality described thus far.
In some applications it may be useful to use external compo-
nents to adjust the maximum allowable inrush current, adjust
UVLO, or to provide additional GATE clamping if the supply
rails have rise times below 1.0ms.
PWGRD
Doc.# DSFP-HV101
B060513
Supertex inc.
6 www.supertex.com

6 Page





ページ 合計 : 8 ページ
PDF
ダウンロード
[ HV101X.PDF ]

共有リンク

Link :

おすすめデータシート

部品番号部品説明メーカ
HV101

There is a function of Inrush Current Limiter Controllers.

Supertex  Inc
Supertex Inc
HV101DB1

There is a function of 3-Pin Hotswap Controller.

Supertex  Inc
Supertex Inc
HV101HD1-1E1

There is a function of TFt LCD.

HYDIS
HYDIS
HV101K5

There is a function of Inrush Current Limiter Controllers.

Supertex  Inc
Supertex Inc

多くを見つけるデータシート

部品番号部品説明メーカ
82S129

The 82S126 and 82S129 are field programmable, which means that custom patterns are immediately available by following the Signetics Generic fusing procedure. 1K-bit TTL Bipolar PROM, Address access time : 50ns max.

NXP
NXP
D1695

This part is a darlington connection NPN silicon epitaxial transistor. The 2SD1695 is a Darlington connection transistor and incorporates a dumper diode between the collector and emitter and a constant voltage diode and protection elements between the collector and base. This transistor is ideal for drives in solenoid and actuators.

NEC
NEC
FDMS86368

N-Channel Power Trench, 80V, 80A, 4.5mΩ.

Fairchild
Fairchild
2SC2456

Here is a Color TV Horizontal Driver, Vceo=300V, TO-126 Package.

Toshiba
Toshiba

www.DataSheet.jp    |   2018   |  メール    |   最新    |   Sitemap