ROHM BP5723-33

Data Sheet
100-220VAC Input/3.3VDC (3A) Output
Isolated AC/DC Converter
BP5723-33
Absolute Maximum Ratings
Dimensions (Unit : mm)
Unit
V
V
mA
mA
W
kW
°C
Topr
−25 to +80
°C
Tstg
−30 to +105
°C
Conditions
PEAK
1 sec (Primary - Secondary)
Contain a self-fever
3.3MAX.
Typ.
−
Max.
650
Unit
V
8.5
3.13
0
14
3.3
−
20
3.47
3.0
V
V
A
∆Vr
∆VI
∆γ
−
−
−
10
10
100
200
200
500
mV
mV
mVpp
η
70
79
−
%
Conditions
Vi=141V Io=3A
Vi=141V Io=1A
*1
Vi=141V, Io=2A
Refer to derating curve
Vi=113 to 374V DC
Io=2A
Vi=141V, Io=0 to 2A
Vi=141V, Io=2A *2
Vi=141V, Io=3A
Pin
No.
Be sure to use fuse for safety.
F1
Vi
−
C1
+
R1
C4
D3
C6
D4
6
9
8
11
8
Vs
GND terminals for the
Secondary side output.
The primary side input
minus terminal.
The power supply terminal
of an inside circuit.
Triggering terminal.
9
NC
NC pin.
VD
It is the drain terminal of
inclusion FET.
2
GND
6
Vi(−)
7
VDD
11
+
−
Vo
Secondary output voltage
control terminals.
+
−
−
C2A C2B
R2
Terminal function
1
Vo=3.3V
Io=3.0A
D2
T1
Name
C3
7
2
1
BP5723-33
Output Power (W)
Min.
−
+
0.25±0.05
3.7MAX.
12
Sample Application Circuit
ZNR C5
11
1.3±0.2
Derating Curve
*1: Operation start voltage becomes 16 to 18 V.
*2: Pulse noise does not include it.
D1
6 7 8 9
0.5±0.1
2.54�10=25.4(TYP)
10
8
6
Operation Range
4
2
0
-30-20-10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(°C)
Switching Frequency
Switching Frequency fsw (kHz)
Load regulation
Output ripple voltage
Power conversion
efficiency
2
P=2.54±0.2
70
60
50
40
30
20
Vi=141V
Vi=311V
10
0
0
500
1000 1500 2000 2500 3000
Output Current Io (mA)
Conversion Efficiency
Conversion Efficiency η (%)
Line regulation
1
7.2MAX.
Electrical Characteristics
Parameter
Symbol
Pin 11 input voltage
VD
Operating power
VDD
voltage(Pin 7)
Rated output voltage
Vo
Rated output current
Io
10.9MAX.
38.5MAX
MARKING SIDE
Limits
700
25
500
10
10
3
105
21.5MAX.
Symbol
VD
VDD
ID
IDD
Po
VI
Tcmax
0.4±1.0
Parameter
11 pin input voltage
7 pin input voltage
11 pin input currents
8 pin input currents
Maximum output power
Withstand voltage
Permission temperature
Operating
temperature range
Storage temperature
range
90
80
70
60
50
40
30
20
10
0
0
Vi=141V
Vi=311V
500 1000 1500 2000 2500 3000
Output Current Io (mA)
External Component Specifications
C2B: Output Capacitor
C3:
C4:
C5:
C6:
Output Capacitor
Noise Removal Capacitor
Noise Removal Capacitor
Noise Removal Capacitor
33µF / 450V
560µF / 10V
High polymer aluminum solid capacitor
560µF / 10V
High polymer aluminum solid capacitor
10µF / 50V Low impedance type
4700pF / 1kV
Use if necessary
Use if necessary
D1:
D2:
D3:
D4:
R1:
R2:
T1:
F1:
ZNR:
Diode bridge
Shottkey diode
Rectification Diode
Rectification Diode
Resistance
Resistance
Switching transformer
Fuse
Varistor
−
30V / 15A
1kV / 1A
80V / 0.13A
47kΩ±5% 3W DC300V or greater
1.5MΩ±5% 0.25W 750V or greater
Custom
Be sure to use a fuse for the safety.
A varistor is required to protect against
lightning surges and static electricity.
Load Regulation
Output Voltage Vo (V)
C1: Input Capacitor
C2A: Output Capacitor
4
3.5
3
2.5
2
1.5
1
0.5
0
Vi=141V
Vi=311V
Maximum
Io=1000mA
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Output Current Io (mA)
Operation Notes
An excessively large capacitance at C2 may cause the output to become inactive. Therefore, a capacitance between 500 to 2200µF is recommended, with a rise time of 10us 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(s)=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 VDD exceeds 20V. In order to reset the input capacitor C4 must be discharged and the power turned back on.
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