RDK-91 Power Integrations, RDK-91 Datasheet - Page 3

• Manufacturer Part Number: RDK-91
• Description: KIT DESIGN REF TINYSWITCH-III
• Manufacturer: Power Integrations
• Series: TinySwitch®-IIIr

Specifications of RDK-91

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Non-Isolated
• Power - Output: 12W
• Voltage - Output: 12V
• Current - Output: 1A
• Voltage - Input: 85 ~ 265VAC
• Regulator Topology: Flyback
• Board Type: Fully Populated
• Utilized Ic / Part: TNY274, TNY275, TNY276, TNY277, TNY278, TNY279, TNY280
• Product: Accessories & Kits
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Other names: 596-1194

Table of Contents
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Page 3 of 37
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
7.1
7.2
7.3
7.4
7.5
9.1
9.2
9.3
9.4
9.5
9.6
11.1
11.2
11.3
11.4
11.5
11.6
13.1
13.2
Introduction .................................................................................................................5
Power Supply Specification ........................................................................................6
Circuit Diagram ...........................................................................................................7
Circuit Description.......................................................................................................8
PCB Layout...............................................................................................................11
Bill of Materials .........................................................................................................12
Transformer Specification .........................................................................................14
Transformer Spreadsheet .........................................................................................17
Performance Data.....................................................................................................19
9.6.1
11.5.1
11.5.2
Thermal Performance............................................................................................24
Waveforms ............................................................................................................25
Line Surge.............................................................................................................30
Conducted EMI .....................................................................................................31
Audible Noise ........................................................................................................33
Input Rectification and Filtering ...........................................................................8
TNY278PN Operation..........................................................................................8
Output Rectification and Filtering.........................................................................9
Feedback and Output Voltage Regulation ...........................................................9
Output Overvoltage Shutdown.............................................................................9
EMI Design Aspects ............................................................................................9
Peak Primary Current Limit Selection ................................................................10
UV Lockout ........................................................................................................10
Electrical Diagram..............................................................................................14
Electrical Specifications .....................................................................................14
Materials ............................................................................................................15
Transformer Build Diagram................................................................................15
Transformer Construction ..................................................................................16
Efficiency ...........................................................................................................19
Active Mode CEC Measurement Data ...............................................................20
No-load Input Power (R8 not installed: no bias winding supplementation) ........21
No-load Input Power (with R8 and bias winding supplementation)....................21
Available Standby Output Power .......................................................................22
Regulation .........................................................................................................23
Drain Voltage and Current, Normal Operation...................................................25
Output Voltage Start-Up Profile .........................................................................26
Drain Voltage and Current Start-Up Profile........................................................26
Load Transient Response (75% to 100% Load Step)........................................27
Output Ripple Measurements ............................................................................28
Overvoltage Shutdown ......................................................................................29
115 VAC, Full Load............................................................................................31
230 VAC, Full Load............................................................................................32
Load and Line.............................................................................................23
Ripple Measurement Technique.................................................................28
Measurement Results.................................................................................29
Tel: [phone] Fax: [phone]
Power Integrations
www.powerint.com