APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
MO-127 COPPER POWER DIPTM 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
Q6 Q7
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 DipTM 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
H T T P : / / W W W . A P E X M I C R O T E C H . C O M ( 8 0 0 ) 5 4 6 - A P E X ( 8 0 0 ) 5 4 6 - 2 7 3 9
M I C R O T E C H N O L O G Y
POWER OPERATIONAL AMPLIFIERS
PA03 P03A
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PA03 PA03A
ABSOLUTE MAXIMUM RATINGS
PARAMETER
TEST CONDITIONS
2
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
INPUT
OFFSET VOLTAGE, initial
T
C
= 25
C
.5
2
.25
.5
mV
OFFSET VOLTAGE, vs. temperature
Full temperature range
10
30
5
10
V/
C
OFFSET VOLTAGE, vs. supply
T
C
= 25
C
8
*
V/V
OFFSET VOLTAGE, vs. power
Full temperature range
20
10
V/W
BIAS CURRENT, initial
T
C
= 25
C
5
50
3
10
pA
BIAS CURRENT, vs. supply
T
C
= 25
C
.01
*
pA/V
OFFSET CURRENT, initial
T
C
= 25
C
2.5
50
1.5
10
pA
INPUT IMPEDANCE, DC
T
C
= 25
C
10
11
*
INPUT CAPACITANCE
T
C
= 25
C
6
*
pF
COMMON MODE VOLTAGE RANGE
3
Full temperature range
V
S
10V
*
V
COMMON MODE REJECTION, DC
Full temp. range, V
CM
=
20V
86
108
*
*
dB
SHUTDOWN CURRENT
4
Full temperature range
100
*
A
SHUTDOWN VOLTAGE
Full temp. range, amp enabled
.85
*
V
SHUTDOWN VOLTAGE
Full temp. range, amp disabled
3.5
*
V
GAIN
OPEN LOOP GAIN at 10Hz
Full temp. range, full load
92
102
*
*
dB
GAIN BANDWIDTH PRODUCT at 1MHz T
C
= 25
C, full load
1
*
MHz
POWER BANDWIDTH
T
C
= 25
C, I
O
= 15A, V
O
= 88V
PP
30
*
kHz
PHASE MARGIN
Full temp. range, C
C
= 1.8nF
65
*
OUTPUT
VOLTAGE SWING
3
T
C
= 25
C, I
O
= 30A
V
S
7
6.2
*
*
V
VOLTAGE SWING
3
Full temp. range, I
O
= 12A
V
S
5
4.2
*
*
V
VOLTAGE SWING
3
Full temp. range, I
O
= 146mA
V
S
4
3.5
*
*
V
CURRENT, peak
T
C
= 25
C
30
*
A
SETTLING TIME to .1%
T
C
= 25
C, 10V step
8
*
s
SLEW RATE
T
C
= 25
C, C
C
- open
8
*
V/
s
CAPACITIVE LOAD
Full temp. range, A
V
= 1
2
*
nF
SHUTDOWN DELAY
T
C
= 25
C, disable
10
*
s
T
C
= 25
C, operate
20
*
s
POWER SUPPLY
VOLTAGE
Full temperature range
15
50
75
*
*
*
V
CURRENT, quiescent
6
T
C
= 25
C
125
300
*
*
mA
CURRENT, disable mode
Full temperature range
25
40
*
*
mA
THERMAL
RESISTANCE, AC junction to case
5
Full temp. range, F>60Hz
.22
.28
*
*
C/W
RESISTANCE, DC junction to case
Full temp. range, F<60Hz
.25
.3
*
*
C/W
RESISTANCE, junction to ambient
Full temperature range
14
*
C/W
TEMPERATURE, junction
Sustained operation
150
*
C
TEMPERATURE RANGE, case
Meets full range specification
25
85
*
*
C
NOTES:
*
The specification of PA03A is identical to the specification for PA03 in applicable column to the left.
1.
Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to
achieve high MTTF.
2.
The power supply voltage for all specifications is the TYP rating unless noted as a test condition.
3.
+V
S
and V
S
denote the positive and negative supply rail respectively. Total V
S
is measured from +V
S
to V
S
.
4.
Rating applies if both shutdown inputs are least 1V inside supply rails. If one of the shutdown inputs is tied to a supply rail, the
current in that pin may increase to 2.4mA.
5.
Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
6.
The PA03 must be used with a heatsink or the quiescent power may drive the unit into thermal shutdown.
SPECIFICATIONS
PA03A
PA03
SUPPLY VOLTAGE, +V
S
to V
S
150V
OUTPUT CURRENT, within SOA
Internally limited
POWER DISSIPATION, internal
500W
INPUT VOLTAGE, differential
25V
INPUT VOLTAGE, common mode
V
S
TEMPERATURE, pin solder-10s
300
C
TEMPERATURE, junction
1
175
C
TEMPERATURE RANGE, storage
65 to +150
C
OPERATING TEMP. RANGE, case
55 to +125
C
SHUTDOWN VOLTAGE, differential
5V
SHUTDOWN VOLTAGE, common mode
V
S
EXTERNAL CONNECTIONS
1
2
3
4
5
6
12
11
10
9
8
7
TOP
VIEW
BALANCE CONTROL
BALANCE CONTROL
PHASE COMP.
PHASE COMP.
+SUPPLY
+OUTPUT
INPUT
+INPUT
SHUT DN
+SHUT DN
SUPPLY
OUTPUT
Pins 6 & 7 must be
connected together.
If unused, tie Pins
11 & 12 to +SUPPLY.
IMPORTANT: OBSERVE
MOUNTING PRECAUTIONS.
REVERSE INSERTION
WILL DESTROY UNIT.
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or
subject to temperatures in excess of 850
C to avoid generating toxic fumes.
CAUTION
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
TYPICAL PERFORMANCE
GRAPHS
PA03 PA03A
0
0
100
300
500
POWER DERATING
INTERNAL POWER DISSIPATION, P(W)
15
105
.25
64
256
BIAS CURRENT
4
.06
10
100
10K
.1M
FREQUENCY, F (Hz)
INPUT NOISE VOLTAGE, V
N
(nV/ Hz)
1
100
10M
FREQUENCY, F (Hz)
20
0
60
120
SMALL SIGNAL RESPONSE
OPEN LOOP GAIN, A (dB)
20
40
80
100
1
100
.1M
10M
210
150
60
0
PHASE RESPONSE
90
30
0
5
20
25
OUTPUT CURRENT, I
O
(A)
1
OUTPUT VOLTAGE, V
O
(V
PP
)
HARMONIC DISTORTION
TIME, t (
S)
40
TOTAL SUPPLY VOLTAGE, V
S
(V)
.4
1.4
NORMALIZED, I
Q
(X)
.6
1.2
OUTPUT VOLTAGE SWING
1
10K
FREQUENCY, F (Hz)
COMMON MODE REJECTION
COMMON MODE REJECTION, CMR (dB)
40
80
120
.1M
10
100
0
PULSE RESPONSE
VOLTS
50
100
CASE TEMPERATURE, T (
C)
0
40
CURRENT LIMIT
CURRENT LIMIT, I (A)
LIM
30
C
INPUT NOISE
1K
1K
5
45
65
85
16
200
POWER RESPONSE
10
60
80
100
120
140
1.0
25
75
10
10
1K 10K .1M 1M
400
10
10K
1M
FREQUENCY, F (Hz)
PHASE, (
)
NORMALIZED BIAS CURRENT, I (X)
B
1K
1M
20
60
100
5
10
15
20
25
30
7.5
5.0
2.5
0
2.5
5.0
7.5
2
3
4
5
6
7
.8
1
125
50
CASE TEMPERATURE, T (
C)
C
180
120
25
FREQUENCY, F (Hz)
DISTORTION, (%)
VOLTAGE DROP FROM SUPPLY (V)
FREQUENCY, F (Hz)
40
80
120
160
200
20
50 25
0
2
4
6
10
20
5K
10K
50K 100K
300K
150
10
20
30
40
50
100
3K
QUIESCENT CURRENT
30
100
300
1K
3K
10K 30K
1.0
0.3
0.1
.03
.01
.003
30
15
C
C
= 470pF
C
C
= OPEN
C
C
= 1800pF
C
C
= OPEN
C
C
= 1800pF
T
C
= 55
C
T
C
= 25
C
T
C
= 125
C
V
IN
=
.5V, A
V
= 10
R
L
=.5
C
C
= OPEN
C
C
= 1800pF
C
C
= 470pF
T
C
= 85
C
T
C
= 25
C
T
C
= 125
C
T
C
= 25
C
V
S
=
50V
A
V
= 10
P
O
= 200W
R
L
= 4
0
CASE TEMPERATURE, T (
C)
C
OPERATING
CONSIDERATIONS
PA03 PA03A
GENERAL
Please read the "General Operating Considerations" section,
which covers stability, supplies, heatsinking, mounting, current
limit, SOA interpretation, and specification interpretation. Addi-
tional information can be found in the application notes. For
information on the package outline, heatsinks, and mounting
hardware, consult the "Accessory and Package Mechanical Data"
section of the handbook.
MOUNTING PRECAUTIONS
The PA03 copper base is very soft and easily bent. Do not put
any stress on the mounting ears of this package. This calls for
caution when pushing the amplifier into certain types of packaging
foam and particularly when inserting the device into a socket.
Insert the amplifier into the socket only by pushing on the perimeter
of the package lid. Pushing the unit into the socket by applying
pressure to the mounting tabs will bend the base due to the high
insertion force required. The base will then not contact the heatsink
evenly resulting in very poor heat transfer. To remove a unit from
a socket, pry the socket away from the heatsink so that the
heatsink will support the amplifier base evenly. Recommended
mounting torque is 810 in.-lbs. (.91.13 Nm).
SAFE OPERATING AREA (SOA)
Due to the internal (non-adjustable) current limit of the PA03,
worst case power dissipation calculations must assume current
capability of 46 amps. Application specific circuits should be
checked against the SOA curve when relying upon current limit for
fault protectio
n.
SAFE OPERATING AREA CURVES
Second breakdown limitations do apply to the PA03 but are
less severe, since junction temperature limiting responds
within 10ms. Stress levels shown as being safe for more than
10ms duration
will merely
cause thermal
shutdown.
Under nor-
mal operating
conditions, ac-
tivation of the
thermal shut-
down is a sign
that the inter-
nal junction
temperatures
have reached
approximately
175
C. Thermal shutdown is a short term safety feature. If the
conditions remain that cause thermal shutdown, the amplifier
will oscillate in and out of shutdown, creating peak high power
stresses, destroying useful signals, and reducing the reliability
of the device.
BALANCE CONTROL
The voltage offset of the PA03 may be externally adjusted to
zero. To implement this adjustment install a 100 to 200 ohm
potentiometer between pins 11 and 12 and connect the wiper arm
to the positive supply. Bypass pins 11 and 12 each with at least a
.01
F ceramic capacitor.
If the optional adjust provision is not used, connect both pins 11
and 12 to the positive supply.
OUTPUT STAGE SHUTDOWN
The entire power stage of the PA03 may be disabled using one
of the circuits shown in Figure 1. There are many applications for
this function. One is a load protection based on power delivered to
the load or thermal rise. Another one is conservation of power
when using batteries. The control voltage requirements accom-
modate a wide variety logic drivers.
1. CMOS operating at +5V can drive the control pins directly.
2. CMOS operating at greater than 5V supplies need a voltage
divider.
3. TTL logic needs a pull up resistor to +5V to provide a swing to
the fully disabled voltage (3.5V). When not using the shutdown
feature, connect both pins 3 and 4 to common.
PHASE COMPENSATION
At low gain settings an external compensation capacitor is
required to insure stability. In addition to the resistive feedback
network, roll off or integrating capacitors must also be considered.
A frequency of 1 MHz is most appropriate to calculate gain.
Operation at gains below 10, without the external compensation
capacitor opens the possibility of oscillations near output satura-
tion regions when under load, the improper operation of the
thermal shutdown circuit. This can result in amplifier destruction.
At gains of 10 or more:
1. No external components are required.
2. Typical slew rate will be 8V/
s.
3. Typical phase margin will be 70
.
At a gain of 3:
1. Connect a 470pF compensation capacitor between pins 9 and
10.
2. Typical slew rate will be 5V/
s.
3. Typical phase margin will be 45
.
At unity gain:
1. Connect a 1.8nF compensation capacitor between pins 9 and
10.
2. Typical slew rate will be 1.8V/
s.
3. Typical phase margin will be 65
.
1
10
20
50
100
150
5
10
30
40
SUPPLY TO OUTPUT DIFFERENTIAL V
S
V
O
(V)
OUTPUT CURRENT FROM +V
S
OR V
S
(A
)
CURRENT LIMIT ZONE
1.0mS
10mS
100mS
THERMAL
SECOND BREAKDOWN
T
C
= 25C
dc
4
3
0 = OPERATE
1 = SHUT DN
500
Q14
Q22
1K
1K
*
+5V
500
PA03
* NOT REQUIRED
WHEN USING
CMOS LOGIC
FIGURE 1a.
DIRECT DRIVE
OF SHUTDOWN
3
0 = SHUT DN
1 = OPERATE
500
Q14
Q22
1K
R
+15V
500
PA03
FIGURE 1b.
HIGH VOLTAGE
LOGIC INTERFACE
CMOS
4
4
3
500
Q14
Q22
1K
R1
**
500
PA03
FIGURE 1c.
THERMALLY
ACTIVATED
SHUTDOWN
R2
4.7K
LOAD
R4
30K
R3
360
360
400mV
THERMAL SENSE
TRANSISTOR
+V
S
2R
** SELECT SHUTOFF
TEMPERATURE
SELECT R4 FOR 5V
DROP ON R2
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
PA03U REV. I FEBRUARY 1998
1998 Apex Microtechnology Corp.
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