IP3526J [SEME-LAB]
Regulating Pulse Width Modulator ; 调整脉冲宽度调制器\n
| 型号： | IP3526J |
| 厂家： | 
SEME LAB |
| 描述： | Regulating Pulse Width Modulator
|
| 文件： | 总6页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IP1526 SERIES
TOP VIEW
+ERROR
–ERROR
1
2
3
4
5
6
7
8
9
18 VREF
REGULATING
PULSE WIDTH
MODULATOR
+VIN
17
16
15
14
OUTPUT B
GROUND
+VCOLLECTOR
COMPENSATION
CSOFTSTART
RESET
–CURRENT SENSE
+CURRENT SENSE
SHUTDOWN
13 OUTPUT A
12 SYNC
FEATURES
• 8 to 35V operation
• 5V reference trimmed to ±1%
• 1Hz to 400kHz oscillator range
• Dual 100mA source/sink outputs
• Digital current limiting
11 RDEADTIME
RTIMING
CTIMING
10
J Package – 18 Pin Ceramic DIP
N Package – 18 Pin Plastic DIP
DW Package – 18 Pin Plastic (300) SOIC
• Double pulse suppression
• Programmable deadtime
Order Information
• Undervoltage lockout
Part
Number
J–Pack
18 Pin
N–Pack
18 Pin
D–18
18 Pin
Temp.
Range
• Single Pulse metering
• Programmable soft start
IP1526
IP3526
Note:
✔
✔
-55 to +125°C
0 to +70°C
✔
✔
• Wide current limit common mode range
• TTL/CMOS compatible logic ports
• Symmetry correction capability
• Guaranteed 6 unit synchronisation
To order, add the package identifier to the part number.
eg.
IP1526J
IP3526DW–18
ABSOLUTE MAXIMUM RATINGS (T
= 25°C unless otherwise stated)
case
+V
Input Voltage
+40V
+40V
IN
Collector Supply Voltage
Logic Inputs
–0.3 to +5.5V
Analogue Inputs
–0.3 to +V
200mA
IN
Source / Sink Load Current
Reference Load Current
Logic Sink Current
Power Dissipation
Internally Limited
15mA
P
P
T = 25°C
1W
D
D
J
A
Derate @ T > 50°C
10mW/°C
A
Power Dissipation
T = 25°C
3W
C
Derate @ T > 25°C
24mW/°C
C
T
T
T
Operating Junction Temperature
Storage Temperature Range
Lead Temperature
See Ordering Information
–65 to +150°C
+300°C
STG
L
(soldering, 10 seconds)
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
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IP1526 SERIES
DESCRIPTION
The IP1526 and IP3526 high performance monolithic pulse width modulator circuits are designed for fixed-frequency switching
regulators and other power control applications. Included in an 1 8-pin dual-in-line package are a temperature compensated voltage
reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and steering logic, and two low impedance power
drivers. Also included are protective features such as soft-start and under-voltage lockout, digital current limiting, double pulse inhibit, a
data latch for single pulse metering, adjustable deadtime, and provision for symmetry correction inputs. For ease of interface, all digital
control ports are TTL and B-series CMOS compatible. Active LOW logic design allows wired-OR connections for maximum flexibility.
This versatile device can be used to implement single-ended or push-pull switching regulators of either polarity, both transformerless
and transformer coupled.
BLOCK DIAGRAM
+ERROR
1
2
3
4
5
6
7
8
9
18 VREF
–ERROR
+VIN
17
16
15
14
OUTPUT B
GROUND
+VCOLLECTOR
COMPENSATION
CSOFTSTART
RESET
–CURRENT SENSE
+CURRENT SENSE
SHUTDOWN
13 OUTPUT A
12 SYNC
11 RDEADTIME
RTIMING
CTIMING
10
RECOMMENDED OPERATING CONDITIONS
IN
V
Input Voltage
+8 to +35V
+4.5 to +35V
0 to 100mA
Collector Voltage
Sink/Source Load Current (Each Output)
Reference Load Current
0 to 20mA
Oscillator Frequency Range
Oscillator Timing Resistor
Oscillator Timing Capacitor
Available Deadtime Range @ 40kHz
Operating Ambient Temperature Range
1Hz to 400kHz
2kΩ to 150kΩ
470pF to 20µF
3% to 50%
R
C
T
T
IP1526
IP3526
–55 to +125°C
0 to +70°C
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
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IP1526 SERIES
ELECTRICAL CHARACTERISTICS (T = Over Operating Temperature Range unless otherwise stated)
J
IP1526
IP3526
Parameter
Test Conditions
REFERENCE SECTION
T = 25°C
Min.
Typ. Max. Min.
Typ. Max.
Units
Output Voltage
4.95
5.0
2
5.05
20
4.9
5.0
2
5.1
30
V
J
Line Regulation
V
= 8 to 35V
IN
mV
Load Regulation
I = 0 to 20mA
5
30
5
50
L
Temperature Stability
Total Output Voltage Range
Short Circuit Current
15
5.0
80
50
15
5.0
80
50
mV
V
4.9
25
5.1
140
4.85
25
5.15
140
V
= 0
mA
REF
UNDERVOLTAGE LOCKOUT
V
V
= 3.8V
= 4.8V
0.2
4.8
0.4
0.2
4.8
0.4
REF
RESET Output Voltage
V
2.4
2.4
REF
OSCILLATOR SECTION 2
T = 25°C
Initial Accuracy
±3
0.5
3
±8
1
±3
0.5
7
±8
1
J
Voltage Stability
V
= 8 to 35V
%
IN
Temperature Stability
Minimum Frequency
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
10
100
10
100
R = 150kΩ
C = 0.2µF
Hz
T
T
R = 2kΩ
C = 470pF
400
0.5
400
kHz
T
T
V
V
= 35V
= 8V
3
1
3.5
3
1
3.5
IN
V
T = 25°C
IN
J
ERROR AMPLIFIER SECTION 3
≤ 2kΩ
Input Offset Voltage
Input Bias Current
Input Offset Current
DC Open Loop Gain
R
2
5
2
10
mV
nA
dB
V
S
–350 –1000
–350 –2000
35
72
100
35
72
200
R ≥ 10MΩ
64
60
L
V
– V
≥ 150mV
PIN1
PIN2
High Output Voltage
Low Output Voltage
3.6
4.2
0.2
3.6
4.2
0.2
I
= 100µA
SOURCE
V
– V
≥ 150mV
PIN1
PIN2
0.4
0.4
V
I
= 100µA
SINK
Common Mode Rejection
Supply Voltage Rejection
R
≤ 2kΩ
70
66
94
80
70
66
94
80
S
dB
V
= 12V to 18V
IN
NOTES
1. Test Conditions unless otherwise stated:
VIN = 15V
2. Oscillator / PWM Section Test Conditions:
OSC = 40kHz
f
TJ = –55 to +125°C
TJ = 0 to +70°C
for IP1526
for IP3526
(RT = 4.12kΩ , CT = 0.01µF ±1%, RD = 0)
3. Error Amplifier Section Test Condition:
VCM = 0 to 5.2V
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
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IP1526 SERIES
ELECTRICAL CHARACTERISTICS (T = Over Operating Temperature Range unless otherwise stated)
J
IP1526
IP3526
Parameter
Test Conditions
PWM COMPARATOR 2
Min.
Typ. Max. Min.
Typ. Max.
Units
Minimum Duty Cycle
Maximum Duty Cycle
V
– V
– V
≥ 150mV
≥ 150mV
0
0
PIN2
PIN1
PIN1
PIN2
%
V
45
49
45
49
DIGITAL PORTS (SYNC, SHUTDOWN & RESET)
HIGH Output Voltage
LOW Output Voltage
HIGH Input Current
LOW Input Current
I
I
= 40µA
2.4
4.0
0.2
2.4
4.0
SOURCE
V
= 3.6mA
0.4
0.2
0.4
SINK
V
V
= 2.4V
–125 –200
–225 –360
–125 –300
–225 –500
IH
µA
= 0.4V
IL
CURRENT LIMIT COMPARATOR 4
≤ 50Ω
Sense Voltage
R
90
50
100
–3
110
–10
80
50
100
–3
120
–10
mV
S
Input Bias Current
µA
SOFT–START SECTION
RESET = 0.4V
Error Clamp Voltage
0.1
0.4
0.1
0.4
V
C Charging Current
RESET = 2.4V
100
150
100
150
µA
S
OUTPUT DRIVERS (each output) 5
I
I
I
I
= 20mA
12.5
12
13.5
13
12.5
12
13.5
13
SOURCE
SOURCE
HIGH Output Voltage
LOW Output Voltage
V
= 100mA
= 20mA
0.2
1.2
50
0.3
2.0
150
0.6
0.2
0.2
1.2
50
0.3
2.0
150
0.6
0.2
SINK
SINK
V
= 100mA
Collector Leakage
Rise Time
V
= 40V
µA
µs
C
C = 1000pF
0.3
0.1
0.3
0.1
L
Fall Time
C = 1000pF
L
POWER CONSUMPTION
V
= 35V
R = 4.12kΩ
T
IN
Standby Current
18
30
18
30
mA
SHUTDOWN = 0.4V
NOTES
1. Test Conditions unless otherwise stated:
VIN = 15V
3. Error Amplifier Section Test Conditions:
VCM = 0 to 5.2V
TJ = –55 to +125°C
TJ = 0 to +70°C
for IP1526
for IP3526
4. Current Limit Comparator Section Test Conditions:
CM = 0 to 12V
V
5. Output Driver Section Test Conditions:
VC = 15V
2. Oscillator / PWM Section Test Conditions:
fOSC = 40kHz
(RT = 4.12kΩ , CT = 0.01µF ±1%, RD = 0)
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
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IP1526 SERIES
APPLICATIONS INFORMATION
Push–Pull Configuration
Single–Ended Configuration
+VSUPPLY
+VSUPPLY
R1
R1
14
14
C1
C1
T1
T1
+VC
+VC
A
B
Q1
Q2
A
B
Q1
13
16
13
16
R2
C2
R2
C2
IP1526
IP1526
Q2
GND
R3
GND
R3
15
15
RETURN
RETURN
Driving N–Channel Power MOSFETs
+15V
75Ω
14
Q1
T1
+VC
A
B
13
IP1526
Q2
16
GND
15
RETURN
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
4/99
IP1526 SERIES
TYPICAL PERFORMANCE CHARACTERISTICS
Soft Start Time vs C
Output Driver Saturation Voltage
S
Output Driver Deadtime vs R Value
D
Oscillator Period vs R and C
T
T
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
4/99
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