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参数资料
| 型号： | TNY379GN |
| 厂商： | POWER INTEGRATIONS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.921 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO7 |
| 封装： | LEAD FREE, PLASTIC, SMD-8/7 |
| 文件页数： | 3/24页 |
| 文件大小： | 998K |
| 代理商： | TNY379GN |
Rev. B 11/07
11
TNY375-380
www.powerint.com
Y-Capacitor
The placement of the Y-capacitor should be directly from the
primary input lter capacitor positive terminal to the common/
return terminal of the transformer secondary. Such a placement
will route high magnitude common mode surge currents away
from the TinySwitch-PK device. Note – if an input π (C, L, C)
EMI lter is used, then the inductor in the lter should be placed
between the negative terminals on the input lter capacitors.
Optocoupler
Place the optocoupler physically close to the TinySwitch-PK
device to minimize the primary side trace lengths. Keep the
high current, high voltage drain and clamp traces away from the
optocoupler to prevent noise pick up.
Output Diode
For best performance, the area of the loop connecting the
secondary winding, the Output Diode, and the Output Filter
Capacitor should be minimized. In addition, for axial diodes,
sufcient copper area should be provided at the anode and
cathode terminal of diode for heatsinking. A larger area is
preferred at the quiet cathode terminal. A large anode area can
increase high frequency radiated EMI.
Quick Design Checklist
As with any power supply design, all TinySwitch-PK 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 the 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.
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
INIT 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-PK device, transformer, output diode, and
output capacitors. Enough thermal margin should be
allowed for part-to-part variation of the R
DS(ON) of
TinySwitch-PK device as specied in the data sheet. Under
low-line maximum power, a maximum TinySwitch-PK device
SOURCE pin temperature of 110 °C is recommended to
allow for these variations.
Design Tools
Up-to-date information on design tools can be found at the
Power Integrations web site: www.powerint.com.
1.
2.
3.
Figure 16. Layout Considerations for TinySwitch-PK Using P Package.
TOP VIEW
PI-4675-051507
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
R
UV
TinySwitch-PK
Bypass capacitor connection
to device should be short
Route connections to EN/UV pin
(including undervoltage resistor)
away from drain connected traces
Copper area for
heat sinking
Return bias winding
directly to input capacitor
Maximize hatched copper
areas (
) for optimum
heatsinking
BP
EN/UV
Y1-
Capacitor
S
PRI
C
BP
D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TNY379GN-TL | 功能描述:交流/直流开关转换器 31 W (85-265 VAC) 39 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 |
| TNY379P | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy-Efficient, Off-Line Switcher With Enhanced Peak Power Performance |
| TNY379PN | 功能描述:接口 - 专用 31W (85-265 VAC) 39W (230 VAC) RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| TNY380G | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy-Efficient, Off-Line Switcher With Enhanced Peak Power Performance |
| TNY380GN | 功能描述:交流/直流开关转换器 35 W (85-265 VAC) 45 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 |
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