Datasheet

Data Sheet
BP5220A/BP5221A/BP5222A
(1) No circuit is installed in the modules to protect against excessive output currents. Therefore, take physical
safety measures such as using a fuse if short-circuit loading is probable.
(2) The output current should be reduced according to an increase in the input voltage or ambient temperature.
Use the modules within the derating curve range.
(3) A large rush current may flow in the module when the input voltage is applied or the output ON / OFF is
controlled with pin 4 without a capacitor such as C1 in application 4. Operating within the safe operation
ranges shown in Fig.12, 15, and 18.
The safe operation range is determined by the safe operation range of the internal switching transistor.
The amount of rush current depends on the output impedance of the input power supply and capacitors
connected to the module outputs. The pulse load on the internal switching transistor at the start of operation
can be reduced by using the protection circuit in application 1 or the slow start circuit in application 4.
(4) Pins 5 and 7 are not connected.
(5) A smoothing electrolytic capacitor is necessary for I/O external components. Please use a capacitor equivalent
to the recommended one.
(6) Please put an I/O smoothing capacitor near the module. Output ripple voltage may be larger or output voltage
may not be stable.
BP5220A
BP5221A
0255070
1000
800
600
400
200
OUTPUT CURRENT : IO (mA)
AMBIENT TEMPERATURE : Ta( °C)
100 120
0 25 50 70 100 120
1200
Vi=8 to 15V
Vi=34V
Vi=38V
Vi=25V
Vi=30V
Fig.10 Derating curve
OUTPUT CURRENT : IO (mA)
AMBIENT TEMPERATURE : Ta( °C)
Fig.13 Derating curve
100
80
60
40
20
0 200 400 600 800 1000
OUTPUT CURRENT : IO (A)
Vi=8V
Vi=23V
Vi=38V
Fig.11 Efficiency
OUTPUT CURRENT : IO (A)
Fig.14 Efficiency
20
10
5
3
2
1
0.5
0.3
0.2
0.1
1 2 3 5 10 20 30 50
Pw=0.2ms
Pw=1ms
VOLTAGE BETWEEN PIN2 AND PIN9 (V)
OUTPUT CURRENT INTO PIN9 (A)
Tc=25°C
SINGLE PULSE
Fig.12 Safety operation range
VOLTAGE BETWEEN PIN2 AND PIN9 (V)
OUTPUT CURRENT INTO PIN9 (A)
Fig.15 Safety operation range
0.5
0.4
0.3
0.2
0.1
Vi=30 to 38V
Vi=8 to 15V
0.6 100
80
60
40
20
0 0.1 0.2 0.3 0.4 0.5
Vi=8V
Vi=23V
Vi=38V
10
4.5A
2.2A
1
0.1
1 10 100
Pw=1ms
Pw=10ms
Operation notes
Electrical Characteristics Curves
Tc=25°C
SINGLE PULSE
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2010.03 - Rev. B
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