View IP3526A_242831.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LAB
TOP VIEW
+ERROR 1 -ERROR 2 COMPENSATION 3 CSOFTSTART 4 RESET 5 -CURRENT SENSE 6 +CURRENT SENSE 7 SHUTDOWN 8 R TIMING 9
18 17 16 15 14 13 12 11 10
SEME
IP1526A SERIES
VREF
+VIN OUTPUT B GROUND +VCOLLECTOR OUTPUT A SYNC R DEADTIME C TIMING
ADVANCED REGULATING PULSE WIDTH MODULATOR
FEATURES
* * * * * * * * * * * * * * * * Low drain current 8 to 35V operation High performance 5V 1% reference Low t.c. 1Hz to 400kHz oscillator range Dual 100mA source/sink outputs Digital current limiting Double pulse suppression Programmable deadtime Accurate current limit sense voltage Undervoltage lockout Single Pulse metering Programmable soft start Wide current limit common mode range TTL/CMOS compatible logic ports Symmetry correction capability Guaranteed 6 unit synchronisation
J Package - 18 Pin Ceramic DIP N Package - 18 Pin Plastic DIP D Package - 18 Pin Plastic (300) SOIC
Order Information
Part J-Pack N-Pack D-18 Temp. Number 18 Pin 18 Pin 18 Pin Range IP1526A -55 to +125C IP3526A 0 to +70C Note: To order, add the package identifier to the part number. eg. IP1526AJ IP3526AD-18
ABSOLUTE MAXIMUM RATINGS (Tcase = 25C unless otherwise stated)
+VIN Input Voltage Collector Supply Voltage Logic Inputs Analogue Inputs Source / Sink Load Current Reference Load Current Logic Sink Current PD PD TJ TSTG TL Power Dissipation Power Dissipation TA = 25C Derate @ TA > 50C TC = 25C Derate @ TC > 25C (Each output, continuous) +40V +40V -0.3 to +5.5V -0.3 to +VIN 200mA Internally Limited 15mA 1W 10mW/C 3W 24mW/C See Ordering Information -65 to +150C (soldering, 10 seconds) +300C
Prelim. 6/95
Operating Junction Temperature Storage Temperature Range Lead Temperature
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
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 .
SEME
IP1526A SERIES
BLOCK DIAGRAM
VREF
18
+VIN GND
17
REFERENCE REGULATOR
15
UNDER VOLTAGE LOCKOUT +VC
14
TO INTERNAL CIRCUITRY RD RT CT
11 9
SYNC
12
10
OSCILLATOR Q T Q Q TOGGLE F/F
13
OUTPUT A
S RESET CSOFTSTART 5
R
4
COMPENSATION +ERROR -ERROR +CS -CS
3
SQ +VIN D Q METERING F/F
MEMORY F/F
16
OUTPUT B
1 2
AMP
7 6 8
SHUTDOWN
RECOMMENDED OPERATING CONDITIONS
VIN Input Voltage Collector Voltage Sink/Source Load Current (Each Output) Reference Load Current Oscillator Frequency Range RT CT Oscillator Timing Resistor Oscillator Timing Capacitor Available Deadtime Range @ 40kHz Operating Ambient Temperature Range IP1526A IP3526A +8 to +35V +4.5 to +35V 0 to 100mA -5 to 20mA 1Hz to 400kHz 2k to 150k 470pF to 20F 3% to 50% -55 to +125C 0 to +70C
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95
LAB
ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated)
Parameter
Output Voltage Line Regulation Load Regulation Temperature Stability Total Output Voltage Range Short Circuit Current VREF = 0 4.9 30
SEME
IP1526A SERIES
Test Conditions
Min.
4.95
IP1526A Typ. Max.
5.0 2 5 15 5.0 80 5.05 10 10 50 5.1 140
Min.
4.9
IP3526A Typ. Max.
5.0 2 5 15 5.1 15 20 50 5.15 140
Units
V mV mV V mA
REFERENCE SECTION
TJ = 25C VIN = 8 to 35V IL = -5 to 20mA
4.85 30
5.0 80
UNDERVOLTAGE LOCKOUT
RESET Output Voltage VREF = 3.8V VREF = 4.8V 2.4 0.2 4.8 0.4 2.4 0.2 4.8 0.4 V
OSCILLATOR SECTION 2
Initial Accuracy Voltage Stability Temperature Stability Minimum Frequency Maximum Frequency Sawtooth Peak Voltage Sawtooth Valley Voltage RT = 150k RT = 2k VIN = 35V VIN = 8V 0.3 CT = 0.2F CT = 470pF 400 700 3 1 3.5 0.3 TJ = 25C VIN = 8 to 35V 3 0.5 1 8 1 3 100 400 700 3 1 3.5 3 0.5 1 8 1 6 100 Hz kHz V %
ERROR AMPLIFIER SECTION 3
Input Offset Voltage Input Bias Current Input Offset Current DC Open Loop Gain High Output Voltage RL 10M VPIN1 - VPIN2 150mV ISOURCE = 100A VPIN1 - VPIN2 150mV ISINK = 100A RS 2k VIN = 12V to 18V 70 66 64 3.6 RS 2k 2 -350 35 72 4.2 5 -1000 100 60 3.6 2 -350 35 72 4.2 10 -2000 200 mV nA dB V
Low Output Voltage Common Mode Rejection Supply Voltage Rejection
0.2 94 80
0.4 70 66
0.2 94 80
0.4
V
dB
NOTES
1. Test Conditions unless otherwise stated: VIN = 15V for IP1526A TJ = -55 to +125C for IP3526A TJ = 0 to +70C 2. Oscillator / PWM Section Test Conditions: fOSC = 40kHz (RT = 4.12k 1% , CT = 0.01F 1%, RD = 0) 3. Error Amplifier Section Test Condition: VCM = 0 to 5.2V
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95
LAB
ELECTRICAL CHARACTERISTICS (TJ = Over Operating Temperature Range unless otherwise stated)
Parameter
Minimum Duty Cycle Maximum Duty Cycle
SEME
IP1526A SERIES
Test Conditions
Min.
2
IP1526A Typ. Max.
0
Min.
IP3526A Typ. Max.
0
Units
PWM COMPARATOR
VPIN2 - VPIN1 150mV VPIN1 - VPIN2 150mV ISOURCE = 40A ISINK = 3.6mA VIH = 2.4V VIL = 0.4V
45
49
45
49
%
DIGITAL PORTS (SYNC, SHUTDOWN & RESET)
HIGH Output Voltage LOW Output Voltage HIGH Input Current LOW Input Current 2.4 4.0 0.2 -125 -225 0.4 -200 -360 2.4 4.0 0.2 -125 -225 0.4 -200 -360 V A
CURRENT LIMIT COMPARATOR 4
Sense Voltage Input Bias Current RS 50 90 100 -3 110 -10 80 100 -3 120 -10 mV A V A
SOFT-START SECTION
Error Clamp Voltage CS Charging Current RESET = 0.4V RESET = 2.4V 50
5
0.1 100
0.4 150 50
0.1 100
0.4 150
OUTPUT DRIVERS (each output)
HIGH Output Voltage ISOURCE = 20mA ISOURCE = 100mA ISINK = 20mA ISINK = 100mA VC = 40V CL = 1000pF CL = 1000pF
12.5 12
13.5 13 0.2 1.2 50 0.3 0.1 0.3 2.0 150 0.6 0.2
12.5 12
13.5 13 0.2 1.2 50 0.3 0.1 0.3 2.0 150 0.6 0.2
V
LOW Output Voltage Collector Leakage Rise Time Fall Time
V A s
POWER CONSUMPTION
Standby Current VIN = 35V RT = 4.12k SHUTDOWN = 0.4V 14 20 14 20 mA
NOTES
1. Test Conditions unless otherwise stated: VIN = 15V for IP1526 TJ = -55 to +125C for IP3526 TJ = 0 to +70C 2. Oscillator / PWM Section Test Conditions: fOSC = 40kHz (RT = 4.12k , CT = 0.01F 1%, RD = 0) 3. Error Amplifier Section Test Conditions: VCM = 0 to 5.2V 4. Current Limit Comparator Section Test Conditions: VCM = 0 to 12V 5. Output Driver Section Test Conditions: VC = 15V unless otherwise stated.
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95
LAB
APPLICATIONS INFORMATION
Push-Pull Configuration
+VSUPPLY +VSUPPLY R1
SEME
IP1526A SERIES
Single-Ended Configuration
Q1 TO OUTPUT FILTER
R1
14
R2 C1 T1 A
13 14
+VC Q1 R2 C2
+VC A
13
IP1526A B GND
15 16
IP1526A Q2 B GND
15 16
R3
RETURN
RETURN
Driving N-Channel Power MOSFETs
+15V 75
14
+VC A
Q1
13
T1
IP1526A Q2 B GND
15 16
RETURN
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95
LAB
TYPICAL PERFORMANCE CHARACTERISTICS
Soft Start Time vs CS Output Driver Saturation Voltage
SEME
IP1526A SERIES
Output Driver Deadtime vs RD Value
Oscillator Period vs RT and CT
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95

▲Up To Search▲

Price & Availability of IP3526A

	To Download IP3526A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .