Datasheet

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220VAC Input/12VDC (1A) Output

Isolated AC/DC Converter

BP5722A12

Data Sheet

*C1, C3, R2:Refer to directions

Absolute Maximum Ratings

Electrical Characteristics

Sample Application Circuit

Parameter Symbol Limits Unit Conditions

Pin 11 input voltage VD

Parameter Symbol

Pin 11 input voltage VD

Min.

−

Typ.

−

Max.

700

Unit

Conditions

Io=1000mA

Operating power

voltage(Pin 7)

VDD 8.8 12 20 V DC, Io=1000mA *1

Line regulation

∆Vr − 8 200 mV

Vi=217 to 405V DC

Io=1000mA

Power conversion

efficiency

η 75 83 − %

800 V

Pin 7,8 input voltage VDD 25 V

Pin 11 input Current ID 350 mA

Pin 8 input Current IDD 10 mA

Output power Po 13 W

Withstand voltage VI 2.5 kW 1 sec (between primary and secondary)

Ambient temperature + module

self-heating

Tcmax

Maximum allowable

surface temperature

Tcmax 105 °C

Operating

temperature range

Topr −25 to +80 °C

Storage temperature

range

Tstg −40 to +105 °C

Rated output voltage Vo 11.4 12.0 12.6 V

Rated output current Io 0 − 1000 mA

Refer to derating curve

Load regulation ∆VI − 30 200 mV Io=50 to 1000mA

Output ripple voltage ∆γ − 200 500 mVpp

*1: The operation starting voltage is between 15.5 and 17.5 V.

*2: Pulse noise is not included.

No.

Terminal

name

1 Vo

Terminal function

Secondary 12V output

voltage control terminal.

Insert a 1000

F output

smoothing capacitor before the

GND for use.

11 VD

Drain terminal for the built-in

FET.

8 Vs

Start-up terminal. Connect to

Vi (+) through an external

resistor (1.5MΩ).

2 GND

Secondary 12V output GND

terminal.

6 Vi(-)

Primary input negative

terminal.

7 VDD

Internal circuit power terminal.

9 NC

NC pin.

Verify proper operation under actual conditions

before use. In particular, confirm that the load

current does not exceed the maximum rating.

External Component Settings

C1: Output smoothing capacitor

C2: Noise reduction capacitor

C3: Output smoothing capacitor

C4: Input smoothing capacitor

C5: Noise reduction capacitor

C6: Output smoothing capacitor

C7: Noise reduction capacitor

D1: Rectifier Diode

D2: Rectifier Diode

D3: Rectifier Diode

D5: Rectifier Diode

D7: Diode Bridge

R1: Resistor

R2: Resistor

R5: Noise reduction resistor

T1: Switching Transformer

F1: Fuse

ZNR: Varistor

1000µF/35V Low-impedance

type

4700pF/400V or higher

10µF/50V Low-impedance

type

33µF/450V

Use if necessary

100µF/35V Low-impedance

type

Use if necessary

Limiting element voltage DC 630V

or higher 0.1 to 0.22µF

90V/6A

1kV/1A

90V/0.13A

100V or higher /1A

800V/1A

100kΩ±5%, 3W

Limiting element voltage 300V or higher

1.53MΩ±5%, 0.25W

Limiting element voltage 600V or higher

Use if necessary

1W or higher 10 to 22Ω

Be sure to use this for safety.

A varistor is required to protect against

lightning surges and static electricity.

Operation Notes

An excessively large capacitance at C1 may cause the output to become inactive. Therefore, a capacitance between 1000 and 2200µF is recommended, with a rise time of 10ms or less.

The capacitance of C3 should be 10µF, since an excessively small value will result in malfunction. The activation time is defined as: t(sec)=R2

�C3�ln[1-17/(VI-30µA�R2)], where VI

is the DC voltage after smoothing.

The resistance of R2 should be 1.5MΩ, since an excessively small value will result in malfunction.

Overcurrent (reset type) and overvoltage (latch type) protection circuits are built in, preventing damage from occurring due to unexpected conditions. The overvoltage protection

circuit shuts down operation once V

DD exceeds 20V. In order to reset the input capacitor C4 must be discharged and the power turned back on.

Dimensions (Unit : mm)

Derating Curve

Switching Frequency

Operation Range

Ambient Temperature Ta (°C)

Output Power (W)

-30-20-10 0 10 20 30 40 50 60 70 80 90

Conversion Efficiency

Load Regulation

Vo2:18V/100mA

Vo1:12V/850mA

AC220V

Vi(+)

Vi(-)

GND1

GND2

Use a fuse for safety

ZNR

121178

BP5722A12

1 2 6 7

32.5 MAX.

21.5 MAX.

4.0

1.0

3.3 MAX.

1.3

0.2

9.3 MAX.

Mark side

5.6 MAX.

3.7 MAX.2.54

25.4

2.54

0.2 0.5

0.1 0.25

0.05

8 9 11

Output Current of Vo12 (mA)

Conversion Efficiency η(%)

100

500 1000

Maximum

Io=1000mA

100VAC Input/12VDC (1A) Output

Isolated AC/DC Converter

BP5718A12

Data Sheet

Absolute Maximum Ratings

Electrical Characteristics

Sample Application Circuit

Parameter Symbol Limits Unit Conditions

Pin 11 input voltage VD

Parameter Symbol

Pin 11 input voltage VD

Min.

−

Typ.

−

Max.

350

Unit

Conditions

Io=1000mA

Operating power

voltage (Pin 7)

VDD 8.8 12 20 V DC, Io=1000mA *1

Line regulation

∆Vr − 5 200 mV

Vi=113V to 195VDC

Io=1000mA

Power conversion

efficiency

75 83 − %

500 V

Pin 7,8 input voltage VDD 25 V

Pin 11 input Current ID 500 mA

Pin 8 input Current IDD 10 mA

Output power Po 13 W

Withstand voltage VI 2.5 kW 1 sec (between primary and secondary)

Ambient temperature + module

self-heating

Tcmax

Maximum allowable

surface temperature

Tcmax 105 °C

Operating

temperature range

Topr −25 to +80 °C

Storage temperature

range

Tstg −40 to +105 °C

Rated output voltage Vo 11.4 12.0 12.6 V

Rated output current Io 0 − 1000 mA

Refer to derating curve

Load regulation ∆VI − 58 200 mV Io=50mA to 1000mA

Output ripple voltage ∆γ − 135 500 mVpp

*1: The operation starting voltage is between 15.5 and 17.5 V.

*2: Pulsating noise is not included.

No.

Terminal

name

1 Vo

Terminal function

Secondary 12V output

voltage control terminal.

Insert a 1000

F output

smoothing capacitor before the

GND for use.

11 VD

Drain terminal for the built-in

FET.

8 Vs

Start-up terminal. Connect to

Vi (+) through an external

resistor (1.5MΩ).

2 GND

Secondary 12V output GND

terminal.

6 Vi(-)

Primary input negative

terminal.

7 VDD

Internal circuit power terminal.

9 NC

NC pin.

Verify proper operation under actual conditions

before use. In particular, confirm that the load

current does not exceed the maximum rating.

External Component Settings

*C1, C3, R2:Refer to directions

C1: Output smoothing capacitor

C2: Noise reduction capacitor

C3: Output smoothing capacitor

C4: Input smoothing capacitor

C5: Noise reduction capacitor

C6: Output smoothing capacitor

C7: Noise reduction capacitor

D1: Rectifier Diode

D2: Rectifier Diode

1000µF/35V Low-impedance

type

2200pF/400V or higher

10µF/50V Low-impedance

type

100µF/250V

Use if necessary

100µF/35V Low-impedance

type

Use if necessary

Limiting element voltage 250V or

higher 0.1 to 0.22µF

60V/6A

1kV/1A

D3: Rectifier Diode

D5: Rectifier Diode

D7: Diode Bridge

R1: Resistor

R2: Resistor

R5: Noise reduction resistor

T1: Switching Transformer

F1: Fuse

ZNR: Varistor

80V/0.1A

100V or higher /1A

800V/1A

100kΩ

5%, 3W

Limiting element voltage 300V or higher

1.5MΩ

5%, 0.25W

Limiting element voltage 300V or higher

Use if necessary

1W or higher 10 to 22Ω

Be sure to use this for safety.

A varistor is required to protect against

lightning surges and static electricity.

Operation Notes

An excessively large capacitance at C1 may cause the output to become inactive. Therefore, a capacitance between 1000 and 2200µF is recommended, with a rise time of 10ms or

less.

The capacitance of C3 should be 10µF, since an excessively small value will result in malfunction. The activation time is defined as: t(sec)=R2

�C3�ln[1-17/(VI-30µA�R2)], where VI

is the DC voltage after smoothing.

The resistance of R2 should be 1.5MΩ, since an excessively small value will result in malfunction.

Overcurrent (reset type) and overvoltage (latch type) protection circuits are built in, preventing damage from occurring due to unexpected conditions. The overvoltage protection

circuit shuts down operation once V

DD exceeds 20V. In order to reset the input capacitor C4 must be discharged and the power turned back on.

Dimensions (Unit : mm)

Derating Curve

Switching Frequency

Operation Range

Ambient Temperature Ta(°C)

Output Power (W)

-30-20-10 0 10 20 30 40 50 60 70 80 90

Output Current Io(mA)

Switching Frequency fsw(kHz)

100

0 200 400 600 800 1000

Conversion Efficiency

Output Current Io(mA)

Conversion Efficiency η(%)

100

500 1000

Load Regulation

Output Current Io(mA)

Output Voltage Vo(V)

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

1000 2200

Vo2:18V/100mA

Vo1:12V/850mA

AC100V

Vi(+)

Vi(-)

GND1

GND2

Use a fuse for safety

ZNR

121178

BP5718A12

Maximum

Io=1000mA

1/1

2010.01 - Rev.A

www.rohm.com

Summary of content (4 pages)

PAGE 1
Data Sheet 220VAC Input/12VDC (1A) Output Isolated AC/DC Converter BP5722A12 Absolute Maximum Ratings Dimensions (Unit : mm) Unit V V mA mA W kW 105 °C Topr −25 to +80 °C Tstg −40 to +105 °C 1 sec (between primary and secondary) Ambient temperature + module Tcmax self-heating Line regulation Load regulation Output ripple voltage Power conversion efficiency 1 2 6 7 8 9 P=2.54±0.2 11 0.5±0.1 1.3±0.2 3.3 MAX. 0.25±0.05 5.6 MAX. 2.54 x 10 =25.4 3.7 MAX.
PAGE 2
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Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request.