BD9540EFV ROHM Electronics, BD9540EFV Datasheet - Page 5

• Manufacturer Part Number: BD9540EFV
• Description: 2ch Switching Regulators for Desktop PC
• Manufacturer: ROHM Electronics

●Reference Data
50[mV/div]
50[mV/div]
© 2009 ROHM Co., Ltd. All rights reserved.
BD9540EFV
10[V/div]
10[V/div]
www.rohm.com
10[V/div]
10[V/div]
20[V/div]
5[A/div]
2[A/div]
HG, LG
2[A/div]
1[V/div]
V
V
I
I
OUT
SW1
SW2
OUT
V
OUT
SW1
SW2
OUT
OUT
2.5
1.5
0.5
I
L
2
2
2
1
0
1
2
-20
Fig.4 Transient Respnse
(V
Fig.1 Transient Respnse
(V
Fig.7 OCP and SCP
0
IN
IN
=12V V
=12V V
Fig.10 Ta-I
28μsec(typ)
20
Ta [℃]
OUT
40
OUT
VIN=12V
VCC=VREG5V
EN1=EN2=3V
1=3.3V)
IN
2=1.05V)
60
(2μs/div)
80
(2μs/div)
100
50[mV/div]
0.5[V/div]
10[V/div]
10[V/div]
10[V/div]
50[V/div]
2[A/div]
2[A/div]
V
I
V
OUT
SW1
SW2
OUT
OUT
SW
130
120
110
100
EN
90
80
I
2
2
L
10
-20
8
6
4
2
0
-20
RILIM=100kΩ
Fig.2 Transient Respnse
(V
0
0
IN
1msec(typ)
Fig.11 Ta-I
Fig.5 V
=12V V
Fig.8 Ta-V
5/17
20
20
(Io=0A)
OUT
Ta [℃]
Ta [℃]
OUT
40
VIN=12V
VCC=VREG5V
EN1=EN2=0V
40
IN_STB
wake up
ILIM
2=1.05V)
60
60
(2μs/div)
80
80
100
100
50[mV/div]
0.5[V/div]
10[V/div]
10[V/div]
10[V/div]
50[V/div]
2[A/div]
2[A/div]
V
100
I
V
OUT
SW1
SW2
OUT
80
60
40
20
OUT
SW
2.5
1.5
0.5
0
EN
0.01
2
1
0
1
2
I
L
0
Fig.3 Transient Respnse
(V
Fig.9 I
IN
Fig.6 V
1msec(typ)
5
=12V V
Fig.12 V
0.1
OUT
(Io=4A)
IOUT [A]
OUT
Technical Note
2009.04 - Rev.B
VIN [V]
VIN=12V
VMOSFET:MP6K61
-Efficiency
10
OUT
IN
VCC=VREG5V
EN1=EN2=3V
wake up
-I
1=3.3V)
IN
1
15
Vo=1.8V
Vo=1.2V
(2μs/div)
20
10