BP5811_10 Datasheet, PDF (1/1 Pages) Rohm – Broad output DC/DC Converter(Non-isolated)

Data Sheet
0 to 19V/300mA Output
Broad output DC/DC Converter(Non-isolated)
BP5811
Absolute Maximum Ratings
Parameter
Symbol
Limits
Unit
Motor driving supply voltage
VMin
25
V
CTL input voltage
VCTL
0.3 to 5.5
V
Maximum output current
Iopeak
300
mA
Operating temperature range
Topr
°C
Storage temperature range
Tstg
°C
Maximum surface temperature Tcmax
100
°C
Recommended Action Conditions
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Motor driving supply voltage VMIN 19.0 20.0 21.0
V
IO=300mA
CTL input voltage
Vctl
0
5.0
V
CTL input frequency
fctl
1
50 100
kHz
Electrical Characteristics
(Unless otherwise specified,VMIN=20V, IO=300mA. VCTL=5.0V, Ta=25°C)
Parameter
Symbol Min. Typ. Max. Unit
Output voltage
Output current
18.0 19.0 20.0 V
Vo 14.3 15.1 15.9 V
6.76 7.35 7.94 V
Io
300 mA
Output ripple
VP
Power conversion e fficiency
0.05 0.15 Vp-p
88 93
%
Conditions
Application Circuit
BP5811
123
6789
VMin
C1
L1
C2
CTL
Be sure to use fuse for safety.
Pin No.
Function
1
Input terminal
2
N.C.
3
GND
4
Skip
5
Skip
6
Coil connection terminal
Vo
7
Coil connection terminal
8
Control terminal
9
Output voltage
External Component Specifications
FUSE: Fuse
C1: Input smoothing
capacitor
C2: Output smoothing
capacitor
L1: Power inductor
Use a quick-acting fuse (2.3A)
470 F/50V Low impedance
Recommended part : PM series (Nichicon)
470 F/50V Low impedance
Recommended part : PM series (Nichicon)
47 H, Rated current 1.2A or higher
Recommended part : TSL0808-470K1R2 (TDK)
Dimensions (Unit : mm)
Derating Curve
350
Vctl=5V
300
250
Vctl=4V
Derating Curve
200
Vctl=3V
150
Vctl=2V
100
Vctl=1V
50
0
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
Ambient Temperature Ta(˚C)
Output Voltage Control
Characteristics (Ta=25°C)
VO-VCTL Characteristics (VMin=20V)
20
15
10
5
0
0
1
2
3
4
5
Control Voltage (DC) VCTL(V)
VO-Duty Characteristics (VMin=20V)
20
15
10
5
0
0
20 40 60 80 100
Control Duty fCTL=50kHz Duty(%)
Conversion Efficiency
(VMin=20V, VCTL=5V)
100
90
80
70
60
50
40
30
20
10
0
0
50
100 150 200 250 300
Output Current IO (mA)
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2010.03 - Rev. B