Non-isolated AC/DC converter
AC100V input, -5V/90mA output
BP5072-5
Absolute Maximum Ratings
Parameter
Input voltage
Operating temperature range
Storage temperature range
Allowable maximum
surface temperature
Maximum Output current
Symbol
Vi
Topr
Tstg
Tsmax
Iopeak
Limits
Unit
V
°C
°C
°C
mA
Conditions
DC
Refer to derating curve
Ambient temperature
PEAK value of current
Refer to derating curve
Dimensions(Unit :
mm
)
Electrical Characteristics
Symbol Min.
Parameter
Input voltage range
Output voltage
Output current
Line regulation
Load regulation
Output ripple voltage
Power conversion efficiency
Typ.
Max.
Unit
V
V
mA
V
V
Vp-p
%
Conditions
Derating Curve
Derating Curve
100
90
80
70
60
50
Operation Range
40
30
20
10
0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(
°C
)
Output Current Io(mA)
Switching frequency
Switching Frequency fsw(kHz)
Switching Frequency
45
40
35
30
25
20
15
10
5
0
0 10 20 30 40 50 60 70 80 90 100
Output Current Io(mA)
Application circuit
BP5072-5
Pin No.
1
2
3
4
5
6
7
8
Function
COMMON
Output terminal
Power inductor
Skip
Power inductor
Skip
Skip
Input terminal
8
R1
D1
FUSE
5
321
Conversion Efficiency
Conversion Efficiency
60
50
L1
Vin
~
ZNR
+
C1
D2
C2
Vo
40
30
Be sure to use fuse for safety.
20
10
0
0 10 20 30 40 50 60 70 80 90 100
Output Current Io(mA)
For actual usage, Please kindly evaluate and confirm our part mounted in your product,
Especially, Please make sure to confirm the load current does not exceed Max. rated current
by using the current probe.
External components setting
FUSE: Fuse
C1: Capacitor for input
voltage smoothing
C2: Capacitor for Output
voltage smoothing
Please make sure to use quick acting (1.0A)
Output Voltage -Vo(V)
Load Regulation
Load Regulation
6
5
4
3
2
1
0
0 20 40 60 80 100 120 140160180200
Output Current Io(mA)
L1: Power inductor
R1: For noise terminal
voltage reduction
D1: Rectifier diode
Inductance 820mH, Rating current:above 0.18A
Choose components that du not easily get magnetically saturated in high temperature.
10Ω to 100Ω, 3W to 5W
Reduce the noise terminal voltage.
The constant value should be evaluated in set.
Use a rectifying diode with the peak reverse voltage of 400V or higher,
the average rectification current of 0.5A or large and the peak surge current of
20A or large.When using an input capacitor of a large capacity , choose a
component that endures the inrush current on power-up.
This product is compatible with full-wave rectification.
Above:400V, current:above 0.7A
Reverse recovery time : trr=50 to 100ns
Varistor must be used. It protects this part from lightning surge and static
electricity.
Surface Temperature Rising
Surface Temperature Rising
25
20
15
10
5
0
0 10 20 30 40 50 60 70 80 90 100
Output Current Io(mA)
D2:Flywheel diode
ZNR: Varistor
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
Automotive Electronics
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