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参数资料
| 型号： | TOP242FN-TL |
| 厂商： | POWER INTEGRATIONS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.72 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6 |
| 封装： | LEAD FREE, PLASTIC, TO-262, 7/6 PIN |
| 文件页数： | 26/52页 |
| 文件大小： | 2175K |
| 代理商： | TOP242FN-TL |
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TOP242-250
N
4/05
32
Quick Design Checklist
As with any power supply design, all TOPSwitch-GX designs
should be veried on the bench to make sure that components
specicationsarenotexceededunderworstcaseconditions.The
following minimum set of tests is strongly recommended:
1. Maximum drain voltage – Verify that peak V
DS does not
exceed 675 V at highest input voltage and maximum
overload output power. Maximum overload output power
occurswhentheoutputisoverloadedtoaleveljustbeforethe
power supply goes into auto-restart (loss of regulation).
2. Maximumdraincurrent–Atmaximumambienttemperature,
maximum input voltage and maximum output load, verify
drain current waveforms at start-up for any signs of
transformer saturation and excessive leading edge current
spikes. TOPSwitch-GX has a leading edge blanking time of
220 ns to prevent premature termination of the ON-cycle.
Verify that the leading edge current spike is below the
allowed current limit envelope (see Figure 52) for the
drain current waveform at the end of the 220 ns blanking
period.
3. Thermal check – At maximum output power, minimum
input voltage and maximum ambient temperature, verify
that temperature specifications are not exceeded for
TOPSwitch-GX
, transformer, output diodes and output
capacitors. Enough thermal margin should be allowed for
the part-to-part variation of the R
DS(ON) of TOPSwitch-GX,
as specied in the data sheet. The margin required can
either be calculated from the tolerances or it can be
accounted for by connecting an external resistance in
series with the DRAIN pin and attached to the same
heatsink, having a resistance value that is equal to the
difference between the measured R
DS(ON) of the device
under test and the worst case maximum specication.
Design Tools
Fora discussion on utilizingTOP248,TOP249 andTOP250
in forward converter congurations, please refer to the
TOPSwitch-GX
Forward Design Methodology Application
Note.
Up-to-date information on design tools can be found at the
Power Integrations website: www.powerint.com
-
HV
+
- DC
Out
PI-2734-043001
T
r
a
n
s
f
o
r
m
e
r
Safety Spacing
Y1-
Capacitor
Solder Side
Component Side
Opto-
coupler
+
Output Filter Capacitors
Maximize hatched copper
areas (
) for optimum
heat sinking
TOP VIEW
Input Filter
Capacitor
R1a - 1c
PRI
SEC
BIAS
TOPSwitch-GX
S
L
C
X
D
Figure 49. Layout Considerations for TOPSwitch-GX using R Package.
相关PDF资料 |
PDF描述 |
|---|---|
| TOP242G-TL | 0.72 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDSO7 |
| TOP246F | 4.32 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6 |
| TOP249F | 8.64 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6 |
| TOP244P | 2.16 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDIP7 |
| TOP249FN-TL | 8.64 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TOP242F-TL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
| TOP242G | 功能描述:IC OFFLINE SWIT OVP UVLO HV 8SMD RoHS:否 类别:集成电路 (IC) >> PMIC - AC-DC 转换器，离线开关 系列:TOPSwitch®-GX 标准包装:1 系列:FPS™ 输出隔离:隔离 频率范围:61kHz ~ 73kHz 输入电压:8 V ~ 26 V 输出电压:650V 功率（瓦特）:12W 工作温度:-40°C ~ 115°C 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-MDIP 包装:Digi-Reel® 其它名称:FSL206MRBNFSDKR |
| TOP242G- | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
| TOP242GN | 功能描述:交流/直流开关转换器 10W 85-265 VAC 15W 230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TOP242GN- | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
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