參數資料
型號: TOP248F
廠商: POWER INTEGRATIONS INC
元件分類: 穩(wěn)壓器
英文描述: 7.2 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
封裝: PLASTIC, TO-262, 7/6 PIN
文件頁數: 19/52頁
文件大?。?/td> 2175K
代理商: TOP248F
TOP242-250
N
4/05
26
Function
TOPSwitch-II TOPSwitch-GX
Figures
TOPSwitch-GX
Advantages
Soft-Start
N/A*
10 ms
Limits peak current and voltage
component stresses during start-
up
Eliminates external components
used for soft-start in most
applications
Reduces or eliminates output
overshoot
External Current
Limit
N/A*
Programmable 100%
to 30% of default
current limit
11,20,21,
24,25,27,
28,34,35,
38,39
Smaller transformer
Higher efciency
Allows power limiting (constant
overload power independent of
line voltage)
Allows use of larger device for
lower losses, higher efciency
and smaller heatsink
DC
MAX
67%
78%
7
Smaller input cap (wider dynamic
range)
Higher power capability (when
used with RCD clamp for large
V
OR)
Allows use of Schottky secondary
rectier diode for up to 15 V
output for high efciency
Line Feed-Forward
with DC
MAX Reduction
N/A*
78% to 38%
7,11,17,
26,27,28,
31,40
Rejects line ripple
Line OV Shutdown
N/A*
Single resistor
programmable
11,17,19,
26,27,28
31,33,40
Increases voltage withstand
capability against line surge
Line UV Detection
N/A*
Single resistor
programmable
11,17,18,
26,27,28,
31,32,40
Prevents auto-restart glitches
during power down
Switching Frequency 100 kHz ±10%
132 kHz ±6%
13,15
Smaller transformer
Below start of conducted EMI
limits
Table 4. Comparison Between TOPSwitch-II and TOPSwitch-GX (continued on next page).
*Not available
Key Application Considerations
TOPSwitch-II
vs. TOPSwitch-GX
Table 4 compares the features and performance differences
between TOPSwitch-GX and TOPSwitch-II. Many of the new
features eliminate the need for additional discrete components.
Other features increase the robustness of design, allowing cost
savings in the transformer and other power components.
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相關代理商/技術參數
參數描述
TOP248F- 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
TOP248FN 功能描述:交流/直流開關轉換器 155 W 85-265 VAC 205 W 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 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel
TOP248FN- 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
TOP248FN-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
TOP248F-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