IP1526A View Datasheet(PDF) - Semelab - > TT Electronics plc
Part Name
Description
MFG CO.
IP1526A Datasheet PDF : 6 Pages
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SEME
LAB
IP1526A SERIES
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
17
+VIN
15
GND
11
RD
9
RT
10
CT
REFERENCE
REGULATOR
UNDER
VOLTAGE
LOCKOUT
TO INTERNAL
CIRCUITRY
SYNC
12
OSCILLATOR
5
RESET
4
CSOFT-
START
3
COMPEN-
SATION
1
+ERROR
+VIN
2
–ERROR
AMP
S
RQ
SQ
D
Q
MEMORY
F/F
METERING
F/F
Q
T
Q
TOGGLE
F/F
7
+CS
6
–CS
8
SHUTDOWN
RECOMMENDED OPERATING CONDITIONS
VIN
Input Voltage
Collector Voltage
Sink/Source Load Current (Each Output)
Reference Load Current
Oscillator Frequency Range
RT
Oscillator Timing Resistor
CT
Oscillator Timing Capacitor
Available Deadtime Range @ 40kHz
Operating Ambient Temperature Range
IP1526A
IP3526A
+VC
14
OUTPUT
13 A
OUTPUT
16 B
+8 to +35V
+4.5 to +35V
0 to 100mA
–5 to 20mA
1Hz to 400kHz
2kΩ to 150kΩ
470pF to 20µF
3% to 50%
–55 to +125°C
0 to +70°C
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 6/95
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