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參數(shù)資料
型號(hào)： TOP243F
英文描述： SMPS Controller
中文描述： 開(kāi)關(guān)電源控制器
文件頁(yè)數(shù)： 41/52頁(yè)
文件大小： 457K
代理商： TOP243F
TOP242-250
41
H
9/02
The following precautions should be followed when testing
TOPSwitch-GX
by itself outside of a power supply. The sche-
matic shown in Figure 53 is suggested for laboratory testing of
TOPSwitch-GX
.
When the DRAIN pin supply is turned on, the part will be in
the auto-restart mode. The CONTROL pin voltage will be
oscillating at a low frequency between 4.8 and 5.8 V and the
drain is turned on every eighth cycle of the CONTROL pin
oscillation. If the CONTROL pin power supply is turned on
BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS
Typical Performance Characteristics
while in this auto-restart mode, there is only a 12.5% chance
that the CONTROL pin oscillation will be in the correct state
(drain active state) so that the continuous drain voltage wave-
form may be observed. It is recommended that the V
power
supply be turned on first and the DRAIN pin power supply
second if continuous drain voltage waveforms are to be
observed. The 12.5% chance of being in the correct state is
due to the divide-by-8 counter. Temporarily shorting the
CONTROL pin to the SOURCE pin will reset
TOPSwitch-GX,
which then will come up in the correct state.
Figure 54. Current Limit vs. MULTI-FUNCTION Pin Current.
Figure 55. Current Limit vs. External Current Limit Resistance.
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
60
40
0
80
100
120
140
160
180
200
-250
-200
-150
-100
-50
I
M
(
μ
A)
C
d
μ
s
PI-2653-010802
Scaling Factors:
TOP242: .45
TOP243 P/G: .75
TOP243 Y/R/F: .90
TOP244 P/G: 1
TOP244 Y/R/F: 1.35
TOP245: 1.80
TOP246: 2.70
TOP247: 3.60
TOP248: 4.50
TOP249: 5.40
TOP250: 6.32
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
60
40
80
100
120
140
160
180
200
0
5K
10K
15K
20K
25K
30K
35K
40K
External Current Limit Resistor R
IL
(
)
C
d
μ
s
PI-2652-010802
45K
Scaling Factors:
TOP242: .45
TOP243 P/G: .75
TOP243 Y/R/F: .90
TOP244 P/G: 1
TOP244 Y/R/F: 1.35
TOP245: 1.80
TOP246: 2.70
TOP247: 3.60
TOP248: 4.50
TOP249: 5.40
TOP250: 6.32
Maximum and minimum levels
are based on characterization.
Minimum
Typical
Maximum
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TOP243F- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP243FN 功能描述:交流/直流開(kāi)關(guān)轉(zhuǎn)換器 30W 85-265 VAC 45W 230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開(kāi)關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel
TOP243FN- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP243FN-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP243F-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
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