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参数资料
| 型号： | TOP245P |
| 厂商： | Power Integrations |
| 文件页数： | 32/52页 |
| 文件大小： | 0K |
| 描述： | IC OFFLINE SWIT OVP UVLO HV 8DIP |
| 标准包装： | 3,000 |
| 系列： | TOPSwitch®-GX |
| 输出隔离： | 隔离 |
| 频率范围： | 66 ~ 132kHz |
| 输出电压： | 700V |
| 功率（瓦特）： | 30W |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm），7 引线 |
| 供应商设备封装： | DIP-8B |
| 包装： | 管件 |
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TOP242-250
Solder Side
Component Side
+
TOP VIEW
Safety Spacing
Y1-
Capacitor
Output Filter Capacitors
HV
-
R1a - 1c
Input Filter
Capacitor
PRI
PRI
T
r
a
n
s
f
o
r
m
e
r
SEC
BIAS
D
X
TOPSwitch-GX
S
L
C
Opto-
coupler
- DC
Out
Maximize hatched copper
areas ( ) for optimum
heat sinking
+
PI-2734-043001
Figure 49. Layout Considerations for TOPSwitch-GX using R Package.
Quick Design Checklist
As with any power supply design, all TOPSwitch-GX designs
should be veri?ed on the bench to make sure that components
speci?cations are not exceeded under worst case conditions. 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
occurs when the output is overloaded to a level just before the
power supply goes into auto-restart (loss of regulation).
2. Maximum drain current – At maximum ambient temperature,
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 speci?ed 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 speci?cation.
Design Tools
For a discussion on utilizing TOP248, TOP249 and TOP250
in forward converter con?gurations, 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
32
O
11/05
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TOP245P- | 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 |
| TOP245P_1 | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Title 32W (47W peak) Multiple Output supply |
| TOP245PN | 功能描述:交流/直流开关转换器 22W 85-265 VAC 30 W 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 |
| TOP245PN- | 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 |
| TOP245PN0152 | 制造商:Power Integrations 功能描述: |
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