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DI-13 PDF预览

DI-13

更新时间: 2022-04-23 23:00:11
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帕沃英蒂格盛 - POWERINT /
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2页 38K
描述
3 W Universal Adapter

DI-13 数据手册

 浏览型号DI-13的Datasheet PDF文件第2页 
®
Design Idea DI-13  
Tin yS w it c h®-II  
3 W Universal Adapter  
Application  
Power Output  
Input Voltage  
Topology  
Device  
Output Voltage  
Flyback  
3 W  
85-265 VAC  
9 V  
3 W Adapter  
TNY264  
This 3 W single output, universal input power supply is  
available as a Design Accelerator Kit (DAK-14) including  
samples and documentation. With 71% minimum efficiency at  
full load, compliance to CISPR22 Class B, small size, and low  
parts count, the DAK-14 showcases the significant advantages  
of TinySwitch-II in low power adapter applications.  
Design Highlights  
No-load consumption less than 250 mW at 230 VAC  
Compact design: 2.0” x 1.2” x 0.75”  
Minimum parts count and single sided PC board ensures  
cost-effective solution  
High frequency operation allows compact EF12.6  
transformer  
Enhanced ON/OFF control allows simple Zener reference  
and eliminates the need for loop compensation  
Built-in circuitry practically eliminates audible noise with  
standard varnished transformer  
No-load regulation achieved without pre-load resistor  
Well defined frequency jitter feature reduces EMI–simple  
input π filter meets CISPR22 Class B/EN55022B  
Self-protectinghystereticthermalshutdown:powersupply  
automatically recovers when fault is removed  
Operation  
The digital ON/OFF control scheme of TinySwitch-II allows  
tightregulationusingalowcostsecondaryZenerreferenceand  
eliminates the need for loop compensation. In addition, no pre-  
load is required to maintain regulation at light load, helping to  
reduce measured no-load consumption to <250 mW at  
265 VAC – see Figure 3. TinySwitch-II also provides auto-  
restarttoreduceoutput overloadcurrentduringfaultconditions.  
C5 2200 pF Y1  
2
10T  
x2  
D6  
L2  
11DQ06  
Bead  
9 V, 330 mA  
RTN  
8
1
C9  
C6  
330 µF  
16 V  
220 µF  
10T  
28 AWG  
D1 & D3  
1N4007  
96T  
33 AWG  
R4  
330 kΩ  
1/2 W  
C3  
2.2 nF  
1 kV  
25 V  
5
3
RF1  
8.2 Ω  
L
C1 & C2  
4.7 µF  
400 V  
VR2  
BZX79-B8V2  
D5  
1N4937  
85-265 VAC  
N
D
EN/UV  
BP  
R2  
4.7 kΩ  
1/8 W  
D1 & D4  
1N4007  
U2  
LTV817A  
U1  
TNY264P  
S
Tin yS w it c h -II  
C4  
0.1 µF  
L1  
1 mH  
PI-3074-091402  
Figure 1. TinySwitch-II 3 W Universal Adapter.  
September 2002  
DI-13  
www.powerint.com  

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