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PA13 Schematic ( PDF Datasheet ) - Cirrus Logic

Teilenummer PA13
Beschreibung Power Operational Amplifier
Hersteller Cirrus Logic
Logo Cirrus Logic Logo 




Gesamt 7 Seiten
PA13 Datasheet, Funktion
®
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PA13 • PA13APA1ww3w.DaPtaASh1ee3t4AU.com
Power Operational Amplifier
FEATURES
♦ LOW THERMAL RESISTANCE — 1.1°C/W
♦ CURRENT FOLDOVER PROTECTION
♦ EXCELLENT LINEARITY — Class A/B Output
♦ WIDE SUPPLY RANGE — ±10V to ±45V
♦ HIGH OUTPUT CURRENT — Up to ±15A Peak
APPLICATIONS
♦ MOTOR, VALVE AND ACTUATOR CONTROL
♦ MAGNETIC DEFLECTION CIRCUITS
UP TO 10A
♦ POWER TRANSDUCERS UP TO 100kHz
♦ TEMPERATURE CONTROL UP TO 360W
♦ PROGRAMMABLE POWER SUPPLIES
UP TO 90V
♦ AUDIO AMPLIFIERS UP TO 120W RMS
DESCRIPTION
The PA13 is a state of the art high voltage, very high
output current operational amplifier designed to drive
resistive, inductive and capacitive loads. For optimum
linearity, especially at low levels, the output stage is
biased for class A/B operation using a thermistor com-
pensated base-emitter voltage multiplier circuit. The
safe operating area (SOA) can be observed for all op-
erating conditions by selection of user programmable
current limiting resistors. For continuous operation un-
der load, a heatsink of proper rating is recommended.
The PA13 is not recommended for gains below –3 (in-
verting) or +4 (non-inverting).
This hybrid integrated circuit utilizes thick film (cermet)
resistors, ceramic capacitors and semiconductor chips
to maximize reliability, minimize size and give top per-
formance. Ultrasonically bonded aluminum wires pro-
vide reliable interconnections at all operating temper-
atures. The 12-pin power SIP package is electrically
isolated.
EQUIVALENT SCHEMATIC
12
11
D1
Q2A
Q2B
10
Q1 9
Q3
2
A1
1
C1
5
6
Q4 Q5
Q6B
Q6A
3
4
7
8
EXTERNAL CONNECTIONS
12
–IN +IN
34 56 78
F.O.
–RCL
–VS –CL
+RCL
OUTPUT
9 10 11 12
+CL
+VS
12-pin SIP
PACKAGE
STYLE DP
Formed leads avaliable
See package style EE
PA13wUww.cirrus.com
Copyright © Cirrus Logic, Inc. 2010
(All Rights Reserved)
APEX − PMAA13RR2E0V1Q01






PA13 Datasheet, Funktion
PA13 • PA13A
®
Product Innovation From
www.DataSheet4U.com
1. Capacitive and dynamic* inductive loads up to the following maximum are safe with the current limits set as
specified.
±VS
50V
40V
35V
30V
25V
20V
15V
CAPACITIVE LOAD
ILIM = 5A
ILIM = 10A
200µF
500µF
2.0mF
7.0mF
25mF
60mF
150mF
125µF
350µF
850µF
2.5mF
10mF
20mF
60mF
INDUCTIVE LOAD
ILIM = 5A
ILIM = 10A
5mH
15mH
50mH
150mH
500mH
1,000mH
2,500mH
2.0mH
3.0mH
5.0mH
10mH
20mH
30mH
50mH
*If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 12.5V be-
low the supply rail with ILIM = 10A or 27V below the supply rail with ILIM = 5A while the amplifier is current limiting,
the inductor must be capacitively coupled or the current limit must be lowered to meet SOA criteria.
2. The amplifier can handle any EMF generating or reactive load and short circuits to the supply rail or common if
the current limits are set as follows at TC = 25°C:
±VS
45V
40V
35V
30V
25V
20V
15V
SHORT TO ±VS
C, L, OR EMF LOAD
.43A
.65A
1.0A
1.7A
2.7A
3.4A
4.5A
SHORT TO
COMMON
3.0A
3.4A
3.9A
4.5A
5.4A
6.7A
9.0A
These simplified limits may be exceeded with further analysis using the operating conditions for a specific applica-
tion.
CURRENT LIMITING
Refer to Application Note 9, "Current Limiting", for details of both fixed and foldover current limit operation. Visit the
Apex Precision Power web site at www.cirrus.com for a copy of Power_design.exe which plots current limits vs.
steady state SOA. Beware that current limit should be thought of as a ±20% function initially and varies about 2:1
over the range of –55°C to 125°C.
For fixed current limit, leave pin 4 open and use equations 1 and 2.
RCL =
0.65
ICL
(1)
ICL =
0.65
RCL
(2)
Where:
ICL is the current limit in amperes.
RCL is the current limit resistor in ohms.
6 PA13U

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