RDK-91 Power Integrations, RDK-91 Datasheet - Page 16

• 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

7.5 Transformer Construction
Cancellation Winding
Secondary Winding
Primary winding
Outer Insulation
Core Assembly
Bobbin Set Up
Bias Winding
Bias Winding
Margin Tape
Margin Tape
Orientation
Insulation
Insulation
Insulation
Insulation
Varnish
WD #3
WD #4
WD #5
Power Integrations
Tel: [phone] Fax: [phone]
www.powerint.com
WD#2
WD1
Set up the bobbin with its pins oriented to the left hand side.
Apply 2.0 mm margin at the pin side of bobbin using item [6]. Match
combined height of shield, primary, and bias windings.
Start at Pin 1. Wind 14 bifilar turns of item [3] from left to right. Wind with
tight tension across entire bobbin evenly. Cut the ends of the bifilar and
leave floating.
1 Layer of tape [7] for insulation.
Start at pin 3. Wind 28 turns of item [3] from left to right. Apply 1 Layer of
tape [7] for insulation. Wind another 28 turns from right to left. Wind with
tight tension across entire bobbin evenly. Finish at Pin 1.
1 Layer of tape [7] for insulation.
Start at Pin 4, wind 6 trifilar turns of item [5]. Wind from left to right with
tight tension. Wind uniformly, in a single layer across entire width of
bobbin. Finish on Pin 2.
1 Layer of tape [7] for insulation.
Start at Pin 2, wind 6 trifilar turns of item [5] from left to right with tight
tension. Wind uniformly, in a single layer across entire width of bobbin.
Finish on Pin 5.
1 Layer of tape [8] for insulation.
Apply 2.0 mm margin at the pin side of bobbin using item [6]. Match
combined height of secondary windings.
Start at Pin 8, wind 7 turns of item [5] from left to right. Wind uniformly, in
a single layer across entire bobbin evenly. Finish on Pin 6.
3 Layers of tape [8] for insulation.
Assemble and secure core halves using item [1] and item [9]
Dip varnish using item [10] (do not vacuum impregnate)
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