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Devices for SW Power Supply
6) Bipolar Transistors: Separately-excited Inverter (MOSFET for Gate Drive)
[Bipolar Transistor Use Example]
• IC with large IC is recommended for driving large-capacitance MOSFET
• Composite type (PNP+NPN) is recommended for miniaturization purpose
Full-Bridge
V DD
P2
P1
Buffer TR
Buffer TR
V DD
N2
GND
N1
Buffer TR
CCFL
Buffer TR
GND
Bipolar Transistors
Absolute maximum ratings/Ta=25˚C
Type No.
Package
Polarity
V CEO
I C
I CP
[V]
[A]
[A]
PNP
30
0.7
3
MCH5541
MCPH5
NPN
30
0.7
3
PNP
30
0.3
0.9
MCH6542
NPN
30
0.3
0.9
MCPH6
PNP
50
0.5
1
MCH6545
NPN
50
0.5
1
PNP
30
0.7
3
CPH5541
NPN
30
0.7
3
PNP
30
1.5
5
CPH5506
NPN
30
1.5
5
PNP
30
2
6
CPH5516
CPH5
NPN
30
2
6
PNP
50
1
3
CPH5518
NPN
50
1
3
PNP
50
3
6
CPH5524
NPN
50
3
6
B13
B14
C1
B2
E2
C2
C1
E1
B1
C2
B2
EC
B1
Push-Pull
Buffer Transistor Circuit
V DD
Buffer TR
N1
Buffer TR
CCFL
Buffer TR
GND
N2
Electrical characteristics/Ta=25˚C
Internal chip
h FE
V CE (sat) [V]
equivalent
P C
V CE
I C
I C
I B
[W]
min
max
typ
max
[V]
[A]
[A]
[mA]
0.5
2
0.01
200
500
0.2
10
0.11
0.22
30A02MH
+30C02MH
0.5
2
0.05
300
800
0.2
10
0.085 0.19
0.5
2
0.01
200
500
0.1
5
0.11
0.22
30A01M
+30C01M
0.5
2
0.01
300
800
0.1
5
0.1
0.2
0.5
2
0.01
200
500
0.1
10
0.06
0.12
50A02CH
+50C02CH
0.5
2
0.01
300
700
0.1
10
0.05
0.1
0.6
2
0.01
200
500
0.2
10
0.11
0.22
30A02CH
+30C02CH
0.6
2
0.05
300
800
0.2
10
0.085 0.19
0.9
2
0.1
200
560
0.75
15
0.25 0.375 CPH3115
+CPH3215
0.9
2
0.1
200
560
0.75
15
0.15 0.225
0.9
2
0.1
200
560
1.5
75
0.17
0.26
CPH3144
+CPH3244
0.9
2
0.1
200
560
1.5
75
0.16
0.24
0.9
2
0.1
200
560
0.5
10
0.23
0.38
CPH3116
0.9
2
0.1
200
560
0.5
10
0.13
0.19
+CPH3216
0.9
2
0.1
200
560
1
50
0.115 0.23
CPH3123
0.9
2
0.1
200
560
1
50
0.09
0.13
+CPH3223
26
■ DC-DC Converter IC
TN8D41A/51A, TN5D41A/51A/61A: Separately-excited step-down switching regulator
[Functions/Features]
• Large current
• High effi ciency
• High withstand voltage V IN max 57V
• Five external parts
Type No.
TN5D41A
TN8D41A
TN5D51A
TN8D51A
TN5D61A
[ExPD Use Example]
V IN
Electrical
+
connection
product
B14
B13
B13
GND
B14
B14
[Application Example for Power Supply Makers: Allows High Design Freedom]
B14
B14
ACIN
B14
ACIN
I O max 8A (TN8D41A/51A)
• Built-in reference oscillator (150kHz)
I O max 5A (TN5D41A/51A/61A)
• Built-in current limiter
Vertical-type P-channel power MOSFET built-in
• Built-in thermal shutdown circuit
• Built-in soft start circuit
• ON/OFF function (shared with soft start pin)
Type
Input voltage
Output voltage/current
Channels
Step-down
10V to 40V
5V/5A
1ch
Step-down
10V to 40V
5V/8A
1ch
Step-down
20V to 48V
12V/5A
1ch
Step-down
20V to 48V
12V/8A
1ch
Step-down
30V to 48V
24V/5A
1ch
V IN
1
Pch MOSFET
Over
Under Voltage
Over Current
Temperature
Protect
Protect
Protect
OUTPUT
--
OSC
COMP
SS
5
SOFTSTART
+
Band Gap
+
AMP
--
GND
2
PFC
Control
PFC
Control
27
Power stage
Package
Built-in (PMOS)
TO-220FI5H-HB
Built-in (PMOS)
TO-220FI5H-HB
Built-in (PMOS)
TO-220FI5H-HB
Built-in (PMOS)
TO-220FI5H-HB
Built-in (PMOS)
TO-220FI5H-HB
SW OUT
3
V OUT
SENSE
FB
4
+
GND
24V Output
5/3.3V
Output
[Proposal]
[Proposal]
1. Simplification of circuits
1. Simplification of circuits
2. Common-ization of circuits
2. Common-ization of circuits
3. Helps reduce designing time
3. Helps reduce designing time
24V Output
TN5D/8D
5/3.3V
Series
Output
5 to 8A Output
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