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參數(shù)資料
| 型號： | AND8019 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Offline Converter Provides 5.0 Volt, 1.0 Amp Output for Small Electronic Equipment |
| 中文描述： | 離線轉換器提供5.0伏，1.0安培小型電子設備輸出 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 213K |
| 代理商： | AND8019 |
AND8019/D
http://onsemi.com
2
Manufacturers Contact Data
Mfr.
Phone
Web
ON Semiconductor
800 282–9855
www.onsemi.com
Cooper Electronics
561 752–5000
www.cooperet.com
TDK
847 803–6100
www.component.tdk.com
Mallory
317 273–0090
www.nacc–doesit.com
Vishay/...
818 781–1642
www.vishay.com/index.html
Lumex
847 359–2790
www.lumex.com
Beau Interconnect
603 524–5101
www.beauint.com
Panasonic
–
www.panasonic.com
Board Evaluation
The following Power Supply Test Setup diagram and
description is designed to allow the board to be tested for all
parameters listed in the Converter Test Data table. This may
be used to confirm proper operation of the board, as well as
operating parameters of modified boards.
Volt
or
Watt
Meter
85 vac–265 vac
50 Hz–60 Hz
Scope
UUT
Load Fixture
500 mA
90 mA
1A
V
55
12
10
Figure 1. Power Supply Test Setup
Test Setup
The input power source needs to be variable over the range
of voltages and frequencies that you choose to test. This can
be either a variac or an electronic power source.
Connect it to a voltmeter or wattmeter. A wattmeter will be
required to measure efficiency. If none is available, use a
voltmeter. The output of the meter will be fed into the input
connector on the board. The polarity is not important as this
converter has an isolated output. Please keep in mind that the
input side of this circuit is hot – including the ground.
The output connector should be connected to an ammeter
in the high line, and then to a set of load resistors. The 12
and 10
resistors should be rated at 10 watts, and the 55
at 2.0 watts.
Any lab scope with at least a 20 MHz bandwidth will be
adequate to observe ripple and switching waveforms.
The unit will not be damaged by input voltages below
85 volts, but may not operate properly. Do not exceed the
265 volt rating as this could damage the NCP1000 as well as
other components.
Measurement Techniques
To accurately measure the output voltage and ripple, the
voltmeter and oscilloscope probes should be connected as
close as possible to the output terminals of the board.
Measuring the output voltage at the load resistors will result
in errors due to the impedance of the ammeter and of the lead
wires.
Ripple measurements often contain large amounts of
common mode noise. Before taking measurements, connect
the scope probe to the ground lead at the negative output
terminal. Any spikes that are on the screen of the scope are
common mode noise that is being picked up by the scope
leads, and are not part of the output ripple. This phenomenon
may be reduced by using two scope probes in a differential
measurement mode.
Connect both ground leads to the negative output
terminal. Connect one scope probe to the negative terminal
also, and the other to the positive terminal. Set the scope up
to subtract the ground signal from the ripple signal, and the
resulting waveform will be a more accurate representation
of the ripple.
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相關代理商/技術參數(shù) |
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| AND8019D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Offline Converter Provides 5.0 Volt, 1.0 Amp Output for Small Electronic Equipment |
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| AND8020D | 制造商:AD 制造商全稱:Analog Devices 功能描述:Termination of ECL Logic Devices with EF (Emitter Follower) OUTPUT Structure |
| AND8028 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Precision Sub-One Volt 1.7 Ampere Output LDO |
| AND8028D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Precision Sub-One Volt 1.7 Ampere Output LDO |
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