ETALDOC 345/10

Page 1 of 6

March 2006

PRODUCT DATA SHEET

POWERLINE CARRIER

P2820

ISOLATION TRANSFORMERS

P2821
P2822
P2823

Features

Applications

∗

 Lead-free (Pb-free)

∗

 Powerline Carrier

∗

 RoHS compliant

∗

 Reinforced insulation

∗

 14.6mm seated height

∗

 Vacuum encapsulated

∗

 Low distortion

∗

  IEC 60950 and UL 60950 certified

∗

  UL Recognized Component

 
 

 

DESCRIPTION

The family of transformers P2820, P2821, P2822
and P2823 is specifically designed to provide signal
coupling with safety for Powerline Carrier
applications over four bands from 40kHz to
148.5kHz.

Typically, the devices are driven from low-
impedance sources and are connected to the mains
network using capacitors whose values are chosen
to resonate with the transformer leakage
inductance.

They are particularly suitable for use with tri-state
power amplifiers, e.g. Texas Instruments TLE2301.

The devices are completely lead-free, compliant
with RoHS Directive 2002/95/EC, and suitable for
lead-free and conventional processing.

The devices are certified to IEC 

60950 and

UL 60950 for reinforced insulation. They are UL
Recognized Components and are supported by
an IEC CB Test Certificate.  Furthermore, the
devices are designed for low distortion and meet
the requirements of EN 50065-1 for conducted
emissions.

P2820, P2821, P2822, P2823

ETALDOC 345/10

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March 2006

SPECIFICATIONS

Distortion

Exceed requirements of EN 50065-1 (1991) for
conducted emissions

Conditions:

P2820,

 Fundamental 40-90kHz into artificial mains

network of EN 

50065-1 at 122dBµV and AC

magnetizing current of 40mA rms at 50Hz.  Circuit
as Figure  1.

P2822

, Fundamental 125-140kHz into artificial

mains network of EN 50065-1 at 116dB

µ

V and AC

magnetizing current of 3mA rms at 50Hz.  Circuit as
Figure 3.

P2821,

 Fundamental 95-125kHz into artificial mains

network of EN 

50065-1 at 116dB

µ

V and AC

magnetizing current of 10mA rms at 50Hz.  Circuit
as Figure 2.

P2823

, Fundamental 140-148.5kHz into artificial

mains network of EN 50065-1 at 116dB

µ

V and AC

magnetizing current of 3mA rms at 50Hz.  Circuit as
Figure 4.

P2820, P2821, P2822, P2823

ETALDOC 345/10

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March 2006

Summary Specification

Voltage Isolation

4kVrms at 50Hz

Operating range

Ambient
Storage
Relative Humidity

-25 to +85ºC
-40 to +125ºC
to 95%

Typical lumped parameters as Fig. 5 referred to pins 1-3.

Parameter

Conditions

P2820

P2821

P2822

P2823

Units

Series resistance R

S

(DCR+ AC resistance)

1V  100kHz

0.5

0.6

1.0

1.3

Ω

Leakage inductance 

∆

L

1V  100kHz

14.4

22

46

58

µH

Shunt inductance L

P

1V  100kHz

400

600

1200

1600

µH

Shunt loss R

P

1V  100kHz

>20

>20

>20

>20

k

Ω

Turns ratio, N

1V  100kHz

1.67

3.22

3.15

3.00

Equivalent Circuit

Fig 5

IDEAL

1:N

P2820, P2821, P2822, P2823

ETALDOC 345/10

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March 2006

Detailed Specification, P2820

Electrical

At T = 25ºC and as circuit fig. 5 unless otherwise indicated.

Parameter

Conditions

Min

Typ

Max

Units

Series resistance

Refered to pins 1-3

40kHz
90kHz
40-90kHz

0.2

–

0.2

0.27
0.38

-

-

0.7
0.7

Ω
Ω
Ω

Saturation Current

1-3; 5% drop in shunt
inductance, Lp

120

150

-

mA

Thermal resistance

Coil to ambient

-

50

70

ºC/W

Turns ratio, N

1.65

1.68

1.71

-

Voltage
isolation 

(1)

50Hz
DC

4.0
5.5

-
-

-
-

kVrms

kV

Operating range:
Functional
Storage

Ambient temperature

-25
-40

-
-

+85

+125

ºC
ºC

Lumped equivalent circuit parameters as Fig. 6

DC resistance

1-3, -25ºC to +85ºC
4-6, -25ºC to +85ºC

0.08
0.20

-

0.2

0.54

Ω

Ω

Leakage inductance 

∆

L

-25ºC to +85ºC

13.9

14.9

15.9

µH

Shunt inductance Lp

25ºC
-25ºC to +85ºC

300
175

500

-

700

1200

µH
µH

Shunt loss Rp

10

-

-

k

Ω

Interwinding
capacitance, C

iw

1,3 : 4,6

-

8

20

pF

Notes:

1.  Components are 100% tested at 6.5kVDC.

Lumped Circuit parameters

Fig 6

IDEAL

1:1.68

P2820, P2821, P2822, P2823

ETALDOC 345/10

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March 2006

CONSTRUCTION

Dimensions shown are in millimetres (inches).
Geometric centres of outline and pad grid coincide within a tolerance circle of 0.3mm

Ø.

Windings may be used interchangeably a primary or secondary.

SAFETY

CERTIFICATION

Constructed in accordance with IEC 60950-1:2001,
EN 60950-1:2001 and UL 60950-1, first Edition,
reinforced insulation 250Vrms maximum working
voltage, flammability class V-0.
Distance through solid insulation 0.4mm minimum.
Creepage and clearances in circuit are 9mm
minimum where PCB pads do not exceed Ø3mm.

Certified under the IEC CB scheme (Certificate
DK-9431) to IEC 60950-1:2001, sub-clauses 1.5,
1.5.1, 1.5.2, 1.7, 1.7.1, 2, 2.9, 2.9.1, 2.9.2, 2.9.3,
2.10, 2.10.1, 2.10.2, 2.10.3, 2.10.3.1, 2.10.3.3,
2.10.4, 2.10.5, 2.10.5.1, 2.10.5.4, 4, 4.7, 4.7.1, 4.7.3,
4.7.3.1, 4.7.3.4, 5, 5.2, 5.2.1, and 5.2.2 for a
maximum working voltage of 250Vrms, nominal
mains supply voltage not exceeding 250Vrms and a
maximum operating temperature of 85ºC in
Pollution Degree 2 environments, reinforced
insulation, including national differences for
Denmark, Finland, Germany, Norway, Sweden,
Switzerland, USA, Canada and UK.
Recognized under the Component Recognition
Program of Underwriters Laboratories Inc. to US and
Canadian requirements CAN/CSA C22.2
No. 60950-1-03/UL60950-1, First Edition, based on
IEC 

60950-1, First Edition, maximum working

voltage 250Vrms, Pollution Degree 2, reinforced
insulation.

UL File number E203175.

Additionally, Profec Technologies certifies all
transformers as providing voltage isolation of
3.88kVrms, 5.5kV DC minimum.   All shipments are
supported by a certificate of conformity to current
applicable safety standards.

e

2

P2820, P2821, P2822, P2823

ETALDOC 345/10

Page 6 of 6

March 2006

ABSOLUTE MAXIMUM RATINGS

COPYRIGHT

(Ratings of components independent of circuit).

Short term isolation voltage (1s)

4.6kVrms,
6.5kVDC

Coil temperature (continuous)

155ºC

Storage temperature

-40ºC to
+125ºC

Lead temperature, 10s

260ºC

ETAL, P2820, P2821, P2822, and P2823 are
Trade Marks of Profec Technologies Ltd.
The Trade Mark ETAL is registered at the UK
Trade Marks Registry.
Profec Technologies Ltd. is the owner of the
design right under the Copyright Designs and
Patents Act 1988 and no rights or licences are
hereby granted or implied to any third party.

© 1996 - 2006  Profec Technologies Ltd.
Reproduction prohibited.

T R A N S F O R M I N G    T H E    F U T U R E

Profec Technologies Ltd., 10 Betts Avenue, Martlesham Heath, Ipswich, IP5 3RH, England

                           Telephone: +44 (0) 1473 611422

Fax:  +44 (0) 1473 611919

Website: www.profec.com 

Email:  info@profec.co.uk  sales@profec.com

FM 25326

ISO 9001

E203175