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| 型号： | TNY277GN |
| 厂商： | Power Integrations |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC OFFLINE SWIT OVP OTP HV 8SMD |
| 标准包装： | 50 |
| 系列： | TinySwitch®-III |
| 输出隔离： | 隔离 |
| 频率范围： | 124kHz ~ 140kHz |
| 输出电压： | 700V |
| 功率（瓦特）： | 23.5W |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-SMD（7 个接脚），鸥形翼 |
| 供应商设备封装： | SMD-8C |
| 包装： | 管件 |
| 配用： | 596-1194-ND - KIT DESIGN REF TINYSWITCH-III |
TNY274-280
Safety Spacing
Y1-
Capacitor
Maximize hatched copper
areas ( ) for optimum
heatsinking
+
HV
-
Input Filter Capacitor
PRI
BIAS
T
r
a
SEC
Output
Rectifier
Output Filter
Capacitor
n
TOP VIEW
S
S
S
S
D
BP/M
EN/UV
C BP
PRI
BIAS
s
f
o
r
m
e
r
Opto-
coupler
-
DC
OUT
+
PI-4368-042506
Figure 15.
Recommended Circuit Board Layout for TinySwitch-III with Undervoltage Lock Out Resistor.
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 k Ω 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 μ A.
Note that typical values for surface insulation resistance (SIR)
where no-clean ?ux has been applied according to the
suppliers’ guidelines are >>10 M Ω and do not cause this issue.
Quick Design Checklist
As with any power supply design, all TinySwitch-III designs
should be veri?ed on the bench to make sure that component
speci?cations are not exceeded under worst case conditions.
The following minimum set of tests is strongly recommended:
2. 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 speci?ed absolute maximum
ratings.
3. Thermal Check – At speci?ed maximum output power,
minimum input voltage and maximum ambient temperature,
verify that the temperature speci?cations 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
speci?ed 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.
1. 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 speci?cation
gives margin for design variation.
11
www.powerint.com
Rev. I 01/09
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TNY277GN-TL | 功能描述:交流/直流开关转换器 18.5W 85-265 VAC 23.5W/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 |
| TNY277GTL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY277P | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY277PG | 功能描述:交流/直流开关转换器 18 W (85-265 VAC) 23.5 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 |
| TNY277PN | 功能描述:交流/直流开关转换器 18.5W 85-265 VAC 23.5W/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 |
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