RDK-242 Power Integrations, RDK-242 Datasheet - Page 18

• Manufacturer Part Number: RDK-242
• Description: Power Management Modules & Development Tools TOPSwitch-JX REF. DESIGN KIT
• Manufacturer: Power Integrations
• Type: MOSFET & Power Driverr

Specifications of RDK-242

• Input Voltage: 85 VAC to 264 VAC
• Output Voltage: 12 V
• Maximum Operating Temperature: + 40 C
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 85 VAC to 264 VAC
• Product: Power Management Modules

7.5 Transformer Construction
Outer insulation
Final Assembly
(Secondary)
preparation
(Shielding)
Insulation
Insulation
Insulation
Insulation
(Primary)
Winding
(Cancel)
Margin
(Bias)
WD1
WD2
WD3
WD4
WD5
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
Place the bobbin item [2] on the mandrel such that primary side on the left and
secondary side on the right. Winding direction is clockwise direction.
Apply margin tape item [7] on both sides of bobbin and for all windings.
Start at pin 6, apply Teflon tubes item [8] at start ends, wind 13 bifilar turns of item [4]
from left to right. At the last turn, cut the wires and leave no connect.
Apply 1 layer of tape item [9].
Start at pin 4, apply Teflon tube item [8] at start end, wind 29 turns of item [3] from left
to right, place 1 layer of tape item [10]. Continue winding from right to left with another
29 turns, at the last turn also apply Teflon tube item [8] and end at pin 6.
Apply 1 layer of tape item [9].
Use copper foil tape item [12], see figure 3 above, start with no connect; wind 1 turn
(over lapped- but separate with tape to avoid shortage), and end with pin 6.
Apply 3 layers of tape item [8].
Start at pin 7, 8, apply Teflon tubes item [8] at start ends, wind 6 bifilar turns of item [5]
from right to left, at the last turn bring the wires back to the left, also apply Teflon tubes
at the wire ends, and finish at pin 11,12.
Apply 3 layers of tape item [9].
Start at pin 1, apply Teflon tubes item [8] at start ends, wind 6 bifilar turns of item [6]
from left to right, at the last turn bring the wires back to the left, also apply Teflon tubes
at the wire ends, and finish at pin 1.
Apply 2 layers of tape item [9].
Grind core. Cover outside the core with tape item [11]. Assemble core and varnish [13]
Figure 8 – Completed Transformer.
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