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參數(shù)資料
| 型號： | TNY275PG |
| 廠商： | POWER INTEGRATIONS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.294 A SWITCHING REGULATOR, PDIP7 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-001AB, DIP-8/7 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 1024K |
| 代理商： | TNY275PG |
Rev. I 01/09
11
TNY274-280
www.powerint.com
the BP/M pin solder pad preventing the design from starting up.
Designs that make use of the undervoltage lockout feature by
connecting a resistor from the high voltage rail to the EN/UV pin
are not affected.
If the contamination levels in the PC board assembly facility are
unknown, the application is open frame or operates in a high
pollution degree environment and the design does not make
use of the undervoltage lockout feature, then an optional
390 kΩ resistor should be added from EN/UV pin to SOURCE
pin to ensure that the parasitic leakage current into the EN/UV
pin is well below 1 μA.
Note that typical values for surface insulation resistance (SIR)
where no-clean ux has been applied according to the
suppliers’ guidelines are >>10 MΩ and do not cause this issue.
Quick Design Checklist
As with any power supply design, all TinySwitch-III designs
should be veried on the bench to make sure that component
specications are not exceeded under worst case conditions.
The following minimum set of tests is strongly recommended:
Maximum drain voltage – Verify that V
DS does not exceed
650 V at highest input voltage and peak (overload) output
power. The 50 V margin to the 700 V BV
DSS specication
gives margin for design variation.
1.
Figure 15.
Recommended Circuit Board Layout for TinySwitch-III with Undervoltage Lock Out Resistor.
TOP VIEW
PI-4368-042506
Opto-
coupler
+
-
HV
+
-
DC
OUT
Input Filter Capacitor
Output
Rectifier
Safety Spacing
T
r
a
n
s
f
o
r
m
e
r
PRI
SEC
BIAS
D
Output Filter
Capacitor
Maximize hatched copper
areas (
) for optimum
heatsinking
BP/M
EN/UV
Y1-
Capacitor
S
PRI
C
BP
BIAS
TinySwitch-III
Maximum drain current – At maximum ambient temperature,
maximum input voltage and peak output (overload) power,
verify drain current waveforms for any signs of transformer
saturation and excessive leading edge current spikes at
startup. Repeat under steady state conditions and verify that
the leading edge current spike event is below I
LIMIT(Min) at the
end of the t
LEB(Min).
Under all conditions, the maximum drain
current should be below the specied absolute maximum
ratings.
Thermal Check – At specied maximum output power,
minimum input voltage and maximum ambient temperature,
verify that the temperature specications are not exceeded
for TinySwitch-III, transformer, output diode, and output
capacitors. Enough thermal margin should be allowed for
part-to-part variation of the R
DS(ON) of TinySwitch-III as
specied in the data sheet. Under low line, maximum power,
a maximum TinySwitch-III SOURCE pin temperature of
110 °C is recommended to allow for these variations.
Design Tools
Up-to-date information on design tools is available at the Power
Integrations website: www.powerint.com.
2.
3.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TNY275PN | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 11.5W 85-265 VAC 15W/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(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 |
| TNY275PN-TL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY275PTL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY276G | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY276GN | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 15W 85-265 VAC 19W/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(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 |
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