IP3526ADW [SEME-LAB]
Regulating Pulse Width Modulator ; 调整脉冲宽度调制器\n
| 型号： | IP3526ADW |
| 厂家： | 
SEME LAB |
| 描述： | Regulating Pulse Width Modulator
|
| 文件： | 总6页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IP1526A SERIES
SEME
LAB
TOP VIEW
+ERROR
1
2
3
4
5
6
7
8
9
18 VREF
ADVANCED
–ERROR
+VIN
17
16
15
14
REGULATING
PULSE WIDTH
MODULATOR
OUTPUT B
GROUND
+VCOLLECTOR
COMPENSATION
CSOFTSTART
RESET
FEATURES
• Low drain current
–CURRENT SENSE
+CURRENT SENSE
SHUTDOWN
13 OUTPUT A
12 SYNC
• 8 to 35V operation
11 RDEADTIME
• High performance 5V ±1% reference
• Low t.c. 1Hz to 400kHz oscillator range
• Dual 100mA source/sink outputs
• Digital current limiting
RTIMING
CTIMING
10
J Package – 18 Pin Ceramic DIP
N Package – 18 Pin Plastic DIP
D Package – 18 Pin Plastic (300) SOIC
• Double pulse suppression
• Programmable deadtime
Order Information
• Accurate current limit sense voltage
• Undervoltage lockout
Part
Number
J–Pack
18 Pin
N–Pack
18 Pin
D–18
18 Pin
Temp.
Range
IP1526A
IP3526A
Note:
✔
✔
-55 to +125°C
0 to +70°C
• Single Pulse metering
✔
✔
• Programmable soft start
To order, add the package identifier to the part number.
• Wide current limit common mode range
• TTL/CMOS compatible logic ports
• Symmetry correction capability
• Guaranteed 6 unit synchronisation
eg.
IP1526AJ
IP3526AD–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
(Each output, continuous)
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)
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP1526A SERIES
SEME
LAB
DESCRIPTION
The IP1526A series of high performance pulse width modulator circuits is a direct replacement for the IP1526 series in all
applications and features improved performance in several key areas. Functions included are a temperature compensated voltage
reference, sawtooth oscillator, error amplifier, PWM comparator, pulse metering and steering logic, and two low impedance power
drivers. Also included are protective features such as soft-start, undervoltage lockout, digital current limiting, double pulse inhibit, a
data latch for single pulse metering, adjustable dead-time and provision for symmetry correction inputs. For ease of interface, all digital
control ports are TTL and 9-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
VREF
18
UNDER
VOLTAGE
LOCKOUT
17
REFERENCE
REGULATOR
+VIN
15
GND
+VC
TO INTERNAL
CIRCUITRY
14
11
9
SYNC
RD
RT
12
OUTPUT
A
OSCILLATOR
10
13
CT
Q
Q
S
T
5
4
RESET
R
Q
TOGGLE
F/F
OUTPUT
B
CSOFT-
START
MEMORY
F/F
16
S
3
Q
Q
COMPEN-
SATION
D
+VIN
1
2
+ERROR
–ERROR
METERING
F/F
AMP
7
6
+CS
–CS
8
SHUTDOWN
RECOMMENDED OPERATING CONDITIONS
IN
V
Input Voltage
+8 to +35V
Collector Voltage
+4.5 to +35V
Sink/Source Load Current (Each Output)
Reference Load Current
0 to 100mA
–5 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
IP1526A
IP3526A
–55 to +125°C
0 to +70°C
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP1526A SERIES
SEME
LAB
ELECTRICAL CHARACTERISTICS (T = Over Operating Temperature Range unless otherwise stated)
J
IP1526A
IP3526A
Parameter
Test Conditions
Min.
Typ. Max. Min.
Typ. Max.
Units
REFERENCE SECTION
Output Voltage
T = 25°C
4.95
5.0
2
5.05
10
4.9
5.0
2
5.1
15
V
J
Line Regulation
V
= 8 to 35V
IN
mV
Load Regulation
I = –5 to 20mA
5
10
5
20
L
Temperature Stability
Total Output Voltage Range
Short Circuit Current
15
5.0
80
50
15
5.0
80
50
mV
V
4.9
30
5.1
140
4.85
30
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
1
±8
1
±3
0.5
1
±8
1
J
Voltage Stability
V
= 8 to 35V
%
IN
Temperature Stability
Minimum Frequency
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
3
6
R = 150kΩ
C = 0.2µF
100
100
Hz
T
T
R = 2kΩ
C = 470pF
400
0.3
700
3
400
0.3
700
3
kHz
T
T
V
V
= 35V
= 8V
3.5
3.5
IN
V
1
1
IN
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
PIN2
PIN1
High Output Voltage
Low Output Voltage
3.6
4.2
0.2
3.6
4.2
0.2
I
= 100µA
SOURCE
V
– V
≥ 150mV
PIN2
PIN1
SINK
0.4
0.4
V
I
= 100µA
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:
fOSC = 40kHz
TJ = –55 to +125°C
TJ = 0 to +70°C
for IP1526A
for IP3526A
(RT = 4.12kΩ ±1% , CT = 0.01µF ±1%, RD = 0)
3. Error Amplifier Section Test Condition:
VCM = 0 to 5.2V
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP1526A SERIES
SEME
LAB
ELECTRICAL CHARACTERISTICS (T = Over Operating Temperature Range unless otherwise stated)
J
IP1526A
IP3526A
Parameter
Test Conditions
Min.
Typ. Max. Min.
Typ. Max.
Units
PWM COMPARATOR 2
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
-225
-200
-360
-125
-225
-200
-360
IH
IL
µA
= 0.4V
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
14
20
14
20
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:
VCM = 0 to 12V
5. Output Driver Section Test Conditions:
VC = 15V unless otherwise stated.
2. Oscillator / PWM Section Test Conditions:
OSC = 40kHz
(RT = 4.12kΩ , CT = 0.01µF ±1%, RD = 0)
f
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP1526A SERIES
SEME
LAB
APPLICATIONS INFORMATION
Push–Pull Configuration
Single–Ended Configuration
Q1
+VSUPPLY
TO OUTPUT FILTER
+VSUPPLY
R1
R1
R2
14
14
C1
T1
+VC
+VC
A
B
Q1
Q2
A
B
13
16
13
16
R2
C2
IP1526A
IP1526A
GND
R3
GND
15
15
RETURN
RETURN
Driving N–Channel Power MOSFETs
+15V
75Ω
14
Q1
T1
+VC
A
B
13
IP1526A
Q2
16
GND
15
RETURN
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
IP1526A SERIES
SEME
LAB
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
Prelim. 6/95
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
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