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參數(shù)資料
| 型號： | PA03 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 運算放大器 |
| 英文描述： | POWER OPERATIONAL AMPLIFIERS |
| 中文描述： | 功耗運算放大器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 99K |
| 代理商： | PA03 |
APEX MICROTECHNOLOGY CORPORATION
TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
MO-127 COPPER POWER DIP PACKAGE
HIGH INTERNAL POWER DISSIPATION
— 500 watts
HIGH VOLTAGE OPERATION —
±
75V
VERY HIGH CURRENT —
±
30 amps
INTERNAL SOA PROTECTION
OUTPUT SWINGS CLOSE TO SUPPLY RAILS
EXTERNAL SHUTDOWN CONTROL
APPLICATIONS
LINEAR AND ROTARY MOTOR DRIVES
YOKE/MAGNETIC FIELD DEFLECTION
PROGRAMMABLE POWER SUPPLIES to
±
68V
TRANSDUCER/AUDIO TO 1000W
DESCRIPTION
The super power PA03 advances the state of the art in both
brute force power and self protection against abnormal oper-
ating conditions. Its features start with a copper dip package
developed by Apex to extend power capabilities well beyond
those attainable with the familiar TO-3 package. The in-
creased pin count of the new package provides additional
control features, while the superior thermal conductivity of
copper allows substantially higher power ratings.
The PA03 incorporates innovative current limiting circuits
limiting internal power dissipation to a curve approximating the
safe operating area of the power transistors. The internal
current limit of 35A is supplemented with thermal sensing
which reduces the current limit as the substrate temperature
rises. Furthermore, a subcircuit monitors actual junction tem-
peratures and with a response time of less than ten millisec-
onds reduces the current limit further to keep the junction
temperature at 175
°
C.
The PA03 also features a laser trimmed high performance
FET input stage providing superior DC accuracies both initially
and over the full temperature range.
EQUIVALENT
SCHEMATIC
3
4
5
2
1
12
11
8
7
6
–
9
10
–V
+
–
BAL
BAL
+V
Q31
Q20
A
Q17
Q2
Q3
Q5
Q20
B
Q18
+SHUT
DOWN
–SHUT
DOWN
Q14
Q22
COMP
Q12
D1
Q1
Q6Q7
Q19
Q29
Q30
Q34
Q32
Q26
D3
OUT
Q9
D2
Q16
Q4
D4
+
Q24
The PA03 output power stages contain fast reverse recov-
ery diodes for sustained high energy flyback protection.
This hybrid integrated circuit utilizes thick film resistors,
ceramic capacitors and silicon semiconductors to maximize
reliability, minimize size and give top performance. Ultrasoni-
cally bonded aluminum wires provide reliable interconnec-
tions at all operating temperatures. The MO-127 Copper,
12-pin Power Dip package (see Package Outlines), is
hermetically sealed and isolated from the internal circuits.
Insulating washers are not recommended.
IMPORTANT: Observe mounting precautions.
TYPICAL APPLICATION
POSITION
FEEDBACK
OBJECT
TOOL
SHUT DOWN
+5V
+
+S
–S
–
–V
S
C
1
R2
R
BAL
+V
S
0/10V
R1
PA03
DESIRED
POSITION
DAC
HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
M I C R O T E C H N O L O G Y
POWER OPERATIONAL AMPLIFIERS
PA03 P03A
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