IP34063AN [SEME-LAB]
DC to DC converter ; 直流到直流转换器\n
| 型号： | IP34063AN |
| 厂家： | 
SEME LAB |
| 描述： | DC to DC converter
|
| 文件： | 总5页 (文件大小：61K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IP35063
IP33063
IP34063
DC–DC CONVERTER
CONTROL CIRCUIT
TOP VIEW
SWITCH
DRIVER
1
2
3
4
8
7
6
5
COLLECTOR
COLLECTOR
SWITCH
EMITTER
Ipk SENSE
FEATURES
• Operation from 2.5 to 40V input
TIMING
CAPACITOR
VC C
• Low Standby Current
COMPARATOR
INVERTING
INPUT
GND
• Current Limiting
• Output switch current of 1.5A
• Output voltage adjustable from 1.25 to 40V
• Operating frequency from 100Hz to 100kHz
J Package – 8 Pin Ceramic DIP
N Package – 8 Pin Plastic DIP
D-8 Package – 8 Pin Plastic (150) SOIC
• Direct replacement for MC34063/MC34063A
series
Order Information
Part
Number
J–Pack
8 Pin
N–Pack
8 Pin
D–8
8 Pin
Temp.
Range
Note:
To order, add the package identifier to the part
number.
IP35063
IP33063
IP34063
✔
✔
✔
-55 to +125°C
-40 to +85°C
0 to +70°C
✔
✔
✔
✔
eg.
IP35063D–8
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage
+40V
–0.3V to +40V
40V
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage
40V
Switch Collector to Emitter Voltage
Driver Collector Voltage
Switch Current
40V
40V
1.5A
Power Dissipation @ T
= 25°C
Ceramic Packages
Plastic Packages
1.25W
1W
amb
Derate above 25°C
10mW/°C
Operating Junction Temperature
Ceramic Packages
Plastic Packages
150°C
125°C
Operating Ambient Temperature Range See Table Above
Storage Temperature Range
See Table Above
–65 to 150°C
Prelim. 2/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP35063
IP33063
IP34063
DESCRIPTION
8
7
6
5
1
2
3
4
Driver
Collector
Switch
Collector
The IP34063 series of control circuits contains all the
functions required to implement DC–DC converters.
Included are internal voltage reference, comparator,
controlled duty cycle oscillator with current limit circuit,
driver, and high current output switch. This series was
specifically designed to be incorporated in Step-Down
(Buck) and Step-Up (Boost) applications with a minimum
number of external components.
S
R
Q
Q2
Q1
170
Ω
Switch
Emitter
I
Sense
pk
OSCILLATOR
Timing
Capacitor
V
CC
COMPARATOR
1.25 V
REFERENCE
REGULATOR
Comparator
Inverting
Input
Gnd
ELECTRICAL CHARACTERISTICS (Test Parameters unless otherwise stated : V = 5V , T = 25°C)
CC
J
Parameter
Test Conditions
Min.
Typ.
Max.
Units
OSCILLATOR
Charging Current
V
V
= 5 to 40V
= 5 to 40V
20
35
200
0.5
6.0
300
50
µA
µA
CC
CC
Discharge Current
Voltage Swing
150
250
Vpp
—
Discharge to Charge Current Ratio
Current Limit Sense Voltage
I
I
= V
pk(sense)
CC
= I
250
350
mV
chg
dischg
OUTPUT SWITCH
Saturation Voltage, Darlington Connection * I
= 1.0A
= 1.0A
1
1.3
0.7
V
V
SW
I
SW
Saturation Voltage *
I
0.45
= 50mA (Forced β = 20)
C(Driver)
DC Current Gain
I
= 1.0A , V = 5.0V
35
120
10
—
SW
CE
Collector Off–State Current
V
= 40V
nA
CE
COMPARATOR
Threshold Voltage *
1.18
1.25
0.04
40
1.32
0.2
V
Threshold Voltage Line Regulation *
Input Bias Current *
V
V
= 3 to 40V
mV/V
nA
CC
= 0V
400
IN
TOTAL DEVICE
V
= 5 to 40V
C = 0.001µF
T
CC
Supply Current *
I
= V
V
> V
th
2.4
3.5
mA
pk(sense)
CC
PIN 5
Pin 2 = Gnd , Remaining Pins Open.
NOTES
* Applies over full operating temperature range (see order information).
Prelim. 2/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP35063
IP33063
IP34063
DESIGN FORMULA TABLE
Calculation
Step–Down
Step–Up
+ V - V
t
V
+ V
V
OUT
ON
OUT
F
F
IN(MIN)
- V
IN(MIN) SAT
t
V
- V
1
- V
V
OFF
IN(MAX)
SAT
OUT
1
(t + t
)
ON
OFF MAX
f
f
MIN
-5
MIN
-5
C
4 x 10
t
4 x 10
t
T
ON
ON
t
+ t
ON
OFF
OFF
pk(switch)
I
2 I
2 I
pk(switch)
OUT(MAX)
OUT(MAX)
t
R
0.33 / I
0.33 / I
SC
pk(switch)
V
- V
- V
V
- V
SAT
IN(MAX)
SAT
OUT
IN(MIN)
L
t
t
ON(MAX)
(MIN)
ON(MAX)
I
I
pk(switch)
pk(switch)
I
(t + t
)
I t
OUT ON
pk(switch) ON
OFF
C
O
8 V
V
ripple
ripple(p–p)
KEY
V
V
— Saturation voltage of the output switch.
SAT
F
— Forward voltage drop of the ringback rectifier.
The following power supply characteristics must be chosen:–
V
— Nominal input voltage. If this voltage is not constant, then use V
for step–down and V
for
IN
IN(MAX)
IN(Min)
step–up converter.
R2
V
— Desired output voltage, V
= 1.25 1 +
(
.
OUT
OUT
)
R1
I
f
— Desired output current.
OUT
— Minimum desired output switching frequency at the selected values for V and I .
MIN
IN
O
V
— Desired peak–to–peak output ripple voltage. In practice, the calculated value will need to be increased
due to the capacitors equivalent series resistance and board layout. The ripple voltage should be kept to a
low value since it will directly affect the line and load regulation.
ripple(p–p)
Prelim. 2/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP35063
IP33063
IP34063
APPLICATIONS INFORMATION
Step–Down Converter
Step–Up Converter
L
170 µH
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
1 8 0Ω
S
R
Q
S
R
Q
Q2
Q2
Q1
Q1
170
170
Ω
Ω
1N5819
I
I
pk
p k
1N5822
C
C
T
T
OSCILLATOR
OSCILLATOR
R
R
SC
0.33
SC
0.22
Ω
Ω
V
V
V
V
IN
CC
COMPARATOR
L
220
IN
1 2 V
CC
COMPARATOR
µH
25V
1.25
V
1.25 V
C
T
470pF
100
µF
100
µF
REFERENCE
REGULATOR
REFERENCE
REGULATOR
C
T
1 50 0p F
V
V
OUT
OUT
5.0V
500mA
2 8 V
1 7 5 m A
R2
3.3K
R 2
4 7 K
R1
1.2K
R 1
2 .2 K
C
C
O
µF
O
470
1500
µF
External Current Boost Connections for I > 1.5A
C
Step–Down, External NPN Switch
Step–Up, External NPN Switch
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
V
OUT
S
R
Q
Q2
S
R
Q
Q2
Q1
Q1
170
170
Ω
Ω
V
OUT
OSCILLATOR
OSCILLATOR
R
R
SC
SC
V
V
IN
IN
COMPARATOR
COMPARATOR
1.25
V
1.25 V
REFERENCE
REGULATOR
REFERENCE
REGULATOR
Step–Down, External PNP Saturated Switch
Step–Up, External NPN Saturated Switch
8
7
6
5
1
2
3
4
8
7
6
5
1
2
3
4
V
V
OUT
S
R
Q
Q2
S
R
Q
Q2
O U T
Q1
Q1
170
170
Ω
Ω
R
–
0
FOR
CONSTANT
V
IN
OSCILLATOR
OSCILLATOR
R
R
SC
S
C
V
V
IN
IN
COM PARATOR
COM PARATOR
1.25
V
1.25 V
REFERENCE
REGULATOR
REFERENCE
REGULATO R
Prelim. 2/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP35063
IP33063
IP34063
TYPICAL PERFORMANCE CHARACTERISTICS
Output Switch On–Off Time
vs Oscillator Timing Capacitor
Standby Supply Current
vs Supply Voltage
1000
500
3.2
2.4
1.6
0.8
0
VCC = 5V
µ
CT = 0.001 F
Ipk(sense) = VCC
Pin 5 = Gnd
Ipk(sense) = VCC
Pin 2 = Gnd
200
100
5 0
ton
toff
2 0
1 0
5
2
1
4 0
0.1
0.2
0.5
1
2
5
1 0
2 0
5 0
100
0
5
1 0
15
2 0
2 5
30
3 5
C T OSCILLATOR TIMING CAPACITOR (nF)
VCC SUPPLY VOLTAGE (V)
Emitter–Follower Configuration
Output Switch Saturation Voltage
vs Emitter Current
Common–Emitter Configuration
Output Switch Saturation Voltage
vs Collector Current
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.2
1.0
0.8
0.6
0.4
0.2
0
VCC = 5V
VCC = 5V
Pin 1,7,8 = VCC
Pin 3,5 = Gnd
Pin 7 =VCC
DARLINGTON CONNECTION
Pin 2,3,5 = Gnd
FORCED
β = 20
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
IC COLLECTOR CURRENT (A)
IE
EMITTER CURRENT (A)
Prelim. 2/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
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