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參數(shù)資料
| 型號(hào)： | AND8116 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Integrated Relay/Inductive Load Drivers for Industrial and Automotive Applications |
| 中文描述： | 綜合繼電器/工業(yè)和汽車應(yīng)用感性負(fù)載驅(qū)動(dòng)程序 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 90K |
| 代理商： | AND8116 |
Semiconductor Components Industries, LLC, 2003
September, 2003 Rev. 1
1
Publication Order Number:
AND8116/D
AND8116/D
Integrated Relay/Inductive
Load Drivers for Industrial
and Automotive
Applications
Prepared by: Alejandro Lara
ON Semiconductor
Abstract
Most PC board mounted relays are driven by
microprocessors or other sensitive electronic devices. A
successful coil drive circuit requires isolation between the
relay and the microprocessor circuitry. Effective drive
circuits must account for drive current and voltage
requirements as well as effective suppression of L di/dt
transients which can destroy microprocessor circuits. While
it is easy to overdesign an effective drive circuit, today’s
designs must be cost competitive. Integrating a monolithic
IC driver device into the relay will provide significant value
to the system designer.
This
paper
describes
ON Semiconductor’s integrated relay driver products to
interface sensitive electronic devices with mechanical
relays to accomplish different control/power functions.
Important benefits such as PC board space savings and
components count reduction are also explained.
the
operation
of
Introduction
Although the advances in the electronics industry are
increasing day by day, mechanical relays are still
extensively used in industrial and automotive applications to
control high current loads. Their low cost and excellent fault
tolerance make relays to be an useful and reliable solution
in industrial and automotive applications environments. The
integrated relay driver devices NUD3105, NUD3112 and
NUD3124 offered by ON Semiconductor are considered to
be the ideal device solution to control mechanical relays
used in industrial and automotive applications. Their
integrated design allows significant simplification and cost
reductions when replacing traditional discrete solutions
such as bipolar transistors plus freewheeling diodes.
Industrial and Automotive Application Requirements
The device requirements for industrial and automotive
applications are different and must be addressed in different
manner. While the requirements for automotive applications
are the most difficult to comply with, industrial
requirements traditionally allow more latitudes. Relay coil
currents vary considerably depending on the applications.
The largest class of industrial and automotive relays have
coils with current consumption between 50 and 150 mA.
Selection of a suitable relay driver requires many
constraints to be evaluated. For automotive applications, it
is necessary to put special attention in the following
requirements:
Load dump (80 V, 300 msec)
Dual voltage jump start (24 V or more)
Reverse battery (14 V, 1minute or more)
ESD immunity (according AECQ100 specification)
Operating ambient temperature (40
°
C to 85
°
C)
Meeting these automotive requirements usually results in
specifying an oversized and noncost effective relay driver,
or one requiring many protection components.
Industrial applications on the other hand do not have many
requirements different than the standard ones such as ESD
immunity (usually 2.0 kV HBM), and a given range of
operating ambient temperature (usually between 0
°
C to
85
°
C). However, some applications also call for protection
devices against transient voltage conditions, which creates
the need for extra protection components too.
APPLICATION NOTE
http://onsemi.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AND8116D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Integrated Relay/Inductive Load Drivers for Industrial and Automotive Applications |
| AND8130 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Analog Switch Allows USB Switching at Low Voltages |
| AND8130/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Analog Switch Allows USB Switching at Low Voltages |
| AND8139 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Ultra-Low Voltage MiniGate Devices Solve 1.2 V Interface Problems |
| AND8139D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Ultra-Low Voltage MiniGate Devices Solve 1.2 V Interface Problems |
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