RD7 View Datasheet(PDF) - Power Integrations, Inc

Part Name

Description

MFG CO.

RD7

TOPSwitch-II® PC Standby Reference Design Board 90 to 375 VDC Input, 3.5 W Output

Power Integrations, Inc 

1 2 3 4 5 6 7 8 9 10 Next

RD7

MARGIN WOUND TRANSFORMER

1

116 T

#35 AWG

9, 10

6T

2

#26 AWG

3

14 T

6, 7

35 AWG

4

CORE# - PC40 EE16/24/5-Z (TDK)

GAP FOR AL OF 182 nH/T2

BOBBIN# - YW-035 (Yih Hwa Enterprises)

PIN

1

2

3

4

6, 7

9,10

FUNCTION

HIGH-VOLTAGE DC BUS

TOPSwitch DRAIN

PRIMARY-SIDE COMMON

VBIAS

RETURN

OUTPUT

10

5

1

4

ELECTRICAL SPECIFICATIONS

Electrical Strength

60 Hz, 1 minute,

from pins 1-4 to pins 5-10

Creepage

Between pins 1-4 and pins 5-10

3000 VAC

6.0 mm (min)

Primary Inductance

All windings open

2430 µH –10%

Resonant Frequency

All windings open

300 kHz (min)

Primary Leakage Inductance Between pins 1-2 (pins 6-10 shorted)

NOTE: All inductance measurements should be made at 100 kHz

70 µH (max)

Figure 15. Electrical Specification of Transformer TRD7-1.

PI-2277-062998

9 B

4/99

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