UNIVERSAL INPUT, 12V/5A ADAPTER EVALUATION BOARD

EVX2001-Y-00B Rev.1.1

www.MonolithicPower.com

8

6/8/2017

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© 2017 MPS. All Rights Reserved.

TRANSFORMER SPECIFICATION

Electrical Diagram

4

3

2

6

5

NC

9

10

N1

N3

N4

N2

N5

PRI.

SEC.

Winding Start 起绕脚

Teflon Tube 套管

铜箔

Figure 4

—Transformer Electrical Diagram

Notes:

1.

Core is connected to Pin 5 with naked wire.

Winding Order

Tape Layer

Winding #

Start-End

Wire Dia

Turns

Winding

Tube

0

N1

4

—〉2

0.33mm*2

18

Fit with wire

1

One Layer Copper, connected to Pin5 with wire

1

N2

9

—〉10

0.6mm(T.I.W)*4

5

Spread

evenly

Ft with wire

1

N3

N4

6

—〉5

5

—〉NC

0.33mm*1

0.33mm*1

6

Spread

evenly

Fit with wire

1

N5

2

—〉3

0.33mm*2

24

Fit with wire

3

Electrical Specifications

Electrical Strength

60 second, 60Hz, from PRI. to SEC.

3500VAC

60 second, 60Hz, from PRI. to CORE.

500VAC

60 second, 60Hz, from SEC. to CORE.

3500VAC

Primary Inductance

Pins 3 - 4, all other windings open, measured at 60kHz, 0.1

VRMS

0.75mH±10%

Primary Leakage Inductance

Pins 3 - 4 with all other pins shorted, measured at 60kHz.

0.1 VRMS

<15

μH±10%

Materials

Item

Description

1

Core: PQ2625,

2

Bobbin: PQ2625, 4+2PIN 1 SECT TH, UL94V-0

3

Wire:

Φ0.33mm,, 2UEW, Class B

4

Wire:Φ0.33mm,, 2UEW, Class B

5

Triple

Insulation Wire: Φ0.6mm TIW

7

Tape: 10.5mm(W)×0.06mm(TH)

8

Varnish: JOHN C. DOLPH CO, BC-346A or equivalent

9

Solder Bar: CHEN NAN: SN99.5/Cu0.5 or equivalent