MP240 [CIRRUS]
Power Operational Amplifier; 功率运算放大器
| 型号： | MP240 |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | Power Operational Amplifier |
| 文件： | 总7页 (文件大小：455K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
I n n o v a t i o n F r o m
P r o du ct
MP240
Power Operational Amplifier
FEATURES
GENERAL DESCRIPTION
The MP240 operational amplifier is a surface mount
constructed component that provides a cost effective
solution in many industrial applications. The MP240
offers outstanding performance that rivals much more
expensive hybrid components yet has a footprint of
only 4.7 sq in. The MP240 has many optional fea-
tures such as four-wire current limit sensing, a shut-
down control and external compensation. In addition,
the class A/B output stage biasing can be turned off
for lower quiescent current with class C operation in
applications where crossover distortion is less impor-
tant such as when driving motors, for example. A boost
voltage feature biases the output stage for close linear
swings to the supply rail for extra efficient operation.
The MP240 is built on a thermally conductive but elec-
trically insulating substrate that can be mounted to a
heat sink.
♦ LOW COST
♦ HIGH VOLTAGE - 200 VOLTS
♦ HIGH OUTPUT CURRENT - 20 AMPS
♦ 170 WATT DISSIPATION CAPABILITY
APPLICATIONS
♦ MOTOR DRIVE
♦ MAGNETIC DEFLECTION
♦ PROGRAMMABLE POWER SUPPLIES
♦ INDUSTRIAL AUDIO AMPLIFIER
EQUIVALENT CIRCUIT DIAGRAM
HSD
LSD
+Vb
8
7
1
+Vs
LEVEL
SHIFT
12-14
+Vs
18-20
R1
R2
R3
Q17
C1
C2
GND
Q1A
D1
2
Q1B
Q16
R13
3.9k
Q2
Q3
R5
D3
Q3A
Q4
15-17
R5A
OUT
OUT
Cc2
Cc1
4
6
R4
9-11
Q5 Q6
+I
Q18
R16
Q21
Q19
36
35
Q20
LIM
R6
R8
-I
R15
Q10
LIM
R7
Q11A
R9
Q11B
-IN
42
OUT
OUT
R10
24-26
R11
+IN 41
Iq
D2
30-32
Q13
R12
Q13A
21-23
5
R12A
Q14
R13
Q15
GND 40
-Vs
C3
27-29
-Vs
R14
-Vb 38
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
SEP 2009
APEX − MP240UREVH
http://www.cirrus.com
P r o d u c t I n n o v a t i o n F r o m
MP240
CHARACTERISTICS AND SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
200
Units
V
SUPPLY VOLTAGE, +VS to -VS
OUTPUT CURRENT, +VB
(Note 6)
(Note 6)
+VS + 15V
-VS - 15V
25
V
POWER DISSIPATION, -VB
V
OUTPUT CURRENT, peak, within SOA
POWER DISSIPATION, internal, DC
INPUT VOLTAGE
A
170
W
+VB to -VB
225
V
TEMPERATURE, pin solder, 10s
TEMPERATURE, junction
°C
°C
°C
°C
(Note 2)
150
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE, case
−40
−40
105
85
SPECIFICATIONS
Parameter
Test Conditions
Min
Typ
Max
Units
INPUT
OFFSET VOLTAGE
1
5
mV
µV/°C
µV/V
pA
Full temperature range
OFFSET VOLTAGE vs. temperature
OFFSET VOLTAGE vs. supply
20
50
20
BIAS CURRENT, initial
BIAS CURRENT vs. supply
OFFSET CURRENT, initial
INPUT IMPEDANCE, DC
INPUT CAPACITANCE
(Note 3)
100
0.1
50
pA/V
pA
100
GΩ
pF
4
COMMON MODE VOLTAGE RANGE
COMMON MODE VOLTAGE RANGE
COMMON MODE REJECTION, DC
DIFFERENTIAL INPUT VOLTAGE
NOISE
+VB - 15
-VB + 15
V
V
92
dB
±25
V
1MHz bandwidth, 1kΩ RS
HSD - LSD
5
5
0
µV RMS
V
SHUTDOWN, active
4.5
5.5
SHUTDOWN, inactive
GAIN
HSD - LSD
-0.5
0.25
V
OPEN LOOP @ 15Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
PHASE MARGIN
RL= 1KΩ, CC = 100pF
CC = 100pF
96
60
dB
MHz
°
1.8
Full temperature range
OUTPUT
VOLTAGE SWING
IO = 20A
+VS - 10
-VS + 10
+VS - 7
V
V
VOLTAGE SWING
IO = -20A
-VS + 8
VOLTAGE SWING
IO = 20A, +VB = +VS +10V
IO = -20A, -VB = -VS -10V
+VS - 3.0 +VS - 2.0
-VS + 6.0 -VS + 5.0
20
V
VOLTAGE SWING
V
CURRENT, continuous, DC
SLEW RATE, A V = -10
A
CC = 100pF
12
14
V/µS
2
MP240U
P r o d u c t I n n o v a t i o n F r o m
MP240
Parameter
Test Conditions
A V = -1, 10V Step, CC = 680pF
DC, 10A Load
Min
Typ
5
Max
Units
µS
SETTLING TIME, to 0.1%
RESISTANCE, open loop
POWER SUPPLY
0.2
Ω
VOLTAGE
±15
±75
16.5
8.5
±100
25
V
CURRENT, quiescent, total
CURRENT, shutdown or class C quiescent
CURRENT, boost supply
mA
mA
mA
8.5
THERMAL
RESISTANCE, AC, junction to case (Note 5) Full temp range, f ≥ 60Hz
0.58
0.73
14
°C/W
°C/W
°C/W
°C
RESISTANCE, DC, junction to case
RESISTANCE, junction to air
Full temp range, f < 60Hz
Full temp range
TEMPERATURE RANGE, case
-40
85
NOTES:
1. Unless otherwise noted: TC = 25°C, compensation CC = 680pF, DC input specifications are ± value
given, power supply voltage is typical rating. Amplifier operated without boost feature.
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate
internal power dissipation to achieve high MTBF.
3. Doubles for every 10°C of case temperature increase.
4. +VS and -VS denote the + and - output stage supply voltages. +VB and -VB denote the + and - input
stage supply voltages (boost voltages).
5. Rating applies if the output current alternates between both output transistors at a rate faster than
60Hz.
6. Power supply voltages +VB and -VB must not be less than +VS and -VS respectively.
EXTERNAL CONNECTIONS
C1
+
C2
Cc
Rs1
Rs2
11
OUT OUT OUT
VIEW FROM COMPONENT SIDE
NC NC OUT OUT OUT -Vs -Vs -Vs OUT OUT OUT -Vs -Vs
12
13
2
4
6
10
15 16
17
19
20
1
3
5
7
8
9
14
18
Iq Cc1 LSD HSD
+Vs +Vs +Vs
+Vs +Vs +Vs
OUT OUT OUT
+Vb GND NC
Cc2
-IN +IN GND NC -Vb NC +ILIM -ILIM
42 41
-Vs
21
40
39
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
38
37
R
LIM
Rs4
Rs3
C3
+
C4
LOAD &
FEEDBACK
42-Pin DIP
Package Style FC
NOTES:
PHASE COMPENSATION
CC IS NPO (COG) RATED FOR FULL SUPPLY VOLTAGE +VS TO -VS
.
CC
GAIN W/O BOOST
≤1
TYP. SLEW RATE
3V/µS
GAIN W/BOOST
≤3
BOTH PINS 2 AND 40 REQUIRED CONNECTED TO SIGNAL GROUND.
C2 AND C3 ELECTROLYTIC ≤10µF PER AMP OUTPUT CURRENT.
C1 AND C4 HIGH QUALITY CERAMIC ≤0.1µF.
680pF
330pF
100pF
≤3
≤6
6V/µS
SEE TEXT FOR SELECTION OF VALUES FOR Rs1 - Rs4.
≤10
≤13
14V/µS
MP240U
3
P r o d u c t I n n o v a t i o n F r o m
MP240
TYPICAL PERFORMANCE GRAPHS
PHASE RESPONSE W/O BOOST
90
PHASE RESPONSE W/BOOST
POWER DERATING
200
150
100
50
90
120
150
180
CC = 680pF
CC = 680pF
C
= 330pF
120
150
180
C
CC = 100pF
C
= 330pF
C
CC = 100pF
RL = 2.5Ω
RL = 2.5Ω
0
-40 -20
0
20 40 60 80 100
50K 100K
FREQUENCY, F(Hz)
1M
2M
50K
100K
FREQUENCY, F(Hz)
1M
2M
CASE TEMPERATURE. TC (°C)
SMALL SIGNAL RESPONSE W/ BOOST
SMALL SIGNAL RESPONSE W/O BOOST
POWER RESPONSE
200
100
120
120
1 - CC = 100pF
2 - CC = 330pF
1 - CC = 100pF
2 - CC = 330pF
100
100
3 - CC = 680pF
3 - CC = 680pF
C
RL = 2.5Ω
RL = 2.5Ω
80
80
C
C
=
100pF
C
=
330pF
C
C
60
60
=
680pF
1
1
40
40
2
2
20
20
3
3
20
0
0
10
100
1K 10K 100K 1M 2M
FREQUENCY
10K
FREQUENCY, F(Hz)
100 1K 10K 100K 1M 2M
FREQUENCY, F(Hz)
1K
100K
500K
10
QUIESCENT CURRENT VS SUPPLY
200
QUIESCENT CURRENT vs TEMPERATURE
130
CURRENT LIMIT
130
120
110
100
90
160
120
80
120
110
100
90
C = 85°C
T
= -40°C
T C
= 25°C
TC
80
70
40
-50 -25
0
25
50
75 100
-40 -20
0
20 40 60 80 100
0
40
80
120 160
200
CASE TEMPERATURE. TC (°C)
HARMONIC DISTORTION
AV = 16
TOTAL SUPPLY VOLTAGE, VS (V)
CASE TEMPERATURE, (°C)
OUTPUT VOLTAGE SWING
SAFE OPERATING AREA
30
10
1
7
6
5
4
3
2
1
0
CC = 100pF
S
+/-VS = 60V
RL = 8Ω
PO = 1W
W/O BOOST FROM +V
10
5
0.1
10mS, TC = 25°C
100mS, TC = 25°C
DC, TC = 25°C
P
O = 10W
TC = 25ºC
S
50mS PULSE
0.01
1
PO = 150W
WITH BOOST FROM -V
DC, TC = 85°C
0.001
0.5
10K 30K
FREQUENCY, F (Hz)
1
10
100 200
30 100
1K
0
5
10
15
20
SUPPLY TO OUTPUT DIFFERENTIAL, VS - VO (V)
OUTPUT CURRENT, IO (A)
4
MP240U
P r o d u c t I n n o v a t i o n F r o m
MP240
+Vs
12-14
TYPICAL APPLICATION
MOTOR POSITION CONTROL
18-20
The MOSFET output stage of the MP240 provides supe-
rior SOA performance compared to bipolar output stages
where secondary breakdown is a concern. The extended
SOA is ideal in motor drive applications where the back
EMF of the motor may impose simultaneously both high
voltage and high current across the output stage transis-
tors. In the figure above a mechanical to electrical feed-
back position converter allows the MP240 to drive the mo-
tor in either direction to a set point determined by the DAC
voltage.
Rs1
1
+Vs
Rs2
Rs3
Rs4
2
+Vb
42
35
GND
-I
LIM
OUT
*
36
+I
DAC OUTPUT
POSITION
COMMAND
Cc1
R
LIM
LIM
Cc2
6
41
GND
40
MOTOR
DRIVE
4
*
OUT
-Vb
38
-Vs
9-11
15-17
24-26
30-32
Cc
21-23
27-29
-Vs
POSITION
FEEDBACK
The MP400 is ideally suited to driving both piezo actua-
tion and deflection applications off of a single low voltage
supply. The circuit above boosts a system 24V buss to 350V to drive an ink jet print head. The MP400s high speed
deflection amplifier is biased for single supply operation by external resistors R2 – R6, so that a 0 to 5V DAC can
be used as the input to the amplifier to drive the print head from 0 to >300V.
GENERAL
Please read Application Note 1 “General Operating Considerations” which covers stability, power supplies, heat
sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.cirrus.com for design
tools that help automate tasks such as calculations for stability, internal power dissipation, current limit, heat sink
selection, Apex Precision Power’s complete Application Notes library, Technical Seminar Workbook and Evaluation
Kits.
GROUND PINS
The MP240 has two ground pins (pins 2, 40). These pins provide a return for the internal capacitive bypassing of
the small signal stages of the MP240. The two ground pins are not connected together on the substrate. Both of
these pins are required to be connected to the system signal ground.
BALANCING RESISTOR SELECTION (RS1-RS4)
The MP240 uses parallel sets of output transistors. To ensure that the load current is evenly shared among the
transistors external balancing resistors RS1-RS4 are required. To calculate the required value for each of the resistors
use: R = 4.5/I2 ,where I is the maximum expected output current. For example, with a maximum output current of
10A each balancing resistor should be 0.045 ohms. Each resistor dissipates 1.125W at the maximum current. Use
a non-inductive 2W rated resistor. A ready source for such resistors is the IRC resistor series LR available from
Mouser Electronics.
SAFE OPERATING AREA
The MOSFET output stage of the MP240 is not limited by second breakdown considerations as in bipolar output
stages. Only thermal considerations and current handling capabilities limit the SOA (see Safe Operating Area graph
on previous page). The output stage is protected against transient flyback by the parasitic diodes of the output stage
MOSFET structure. However, for protection against sustained high energy flyback external fast-recovery diodes
must be used.
COMPENSATION
The external compensation capacitor CC is connected to pins 4 and 6. Unity gain stability can be achieved with
CC = 680pF for a minimum phase margin of 60 degrees. At higher gains more phase shift can usually be tolerated
and CC can be reduced resulting in higher bandwidth and slew rate. Use the typical operating curves as a guide to
select CC. A 200V NPO (COG) type capacitor is required. Boost operation requires more compensation or higher
gains than with normal operation due to the increased capacitance of the output transistors when the output signal
swings close to the supply rails.
MP240U
5
P r o d u c t I n n o v a t i o n F r o m
MP240
OVERVOLTAGE PROTECTION
+Vs
Z1
Although the MP240 can withstand differential input voltages up to ±25V, in
some applications additional external protection may be needed. 1N4148
signal diodes connected anti-parallel across the input pins is usually suf-
ficient. In more demanding applications where bias current is important
diode connected JFETs such as 2N4416 will be required. See Q1 and Q2
in Figure 1. In either case the differential input voltage will be clamped to
±0.7V. This is sufficient overdrive to produce the maximum power band-
width. Some applications will also need over-voltage protection devices
connected to the power supply rails. Unidirectional zener diode transient
suppressors are recommended. The zeners clamp transients to voltages
within the power supply rating and also clamp power supply reversals to
ground. Whether the zeners are used or not the system power supply
should be evaluated for transient performance including power-on over-
shoot and power-off polarity reversals as well as line regulation. See Z1
and Z2 in Figure 1.
1
+Vs
-IN
Q1
42
2
+Vb
GND
OUT
Q2
41
GND
40
-Vb
38
+IN
-Vs
-Vs
Z2
FIGURE 1: OVERVOLTAGE PROTECTION
POWER SUPPLY BYPASSING
Bypass capacitors to power supply terminals +VS and -VS must be connected physically close to the pins to prevent local para-
sitic oscillation in the output stage of the MP240. Use electrolytic capacitors at least 10µF per output amp required. Bypass
the electrolytic capacitors with high quality ceramic capacitors 0.1µF or greater. In most applications power supply terminals
+VB and -VB will be connected to +VS and -VS respectively. Although +VB and -VB are bypassed internally it is recommended to
bypass +VB and -VB with 0.1µF externally. Additionally ground pins 2 and 40 must be connected to the system signal ground.
RF
CURRENT LIMIT
The two current limit sense lines are to be connected directly across the cur-
35
RIN
rent limit sense resistor. For the current limit to work correctly pin 36 must
be connected to the amplifier output side and pin 35 connected to the load
side of the current limit resistor RLIM as shown in Figure 2. This connection
will bypass any parasitic resistances RP, formed by socket and solder joints
as well as internal amplifier losses. The current limiting resistor may not be
placed anywhere in the output circuit except where shown in Figure 2. The
value of the current limit resistor can be calculated as follows: RLIM = .65/ILIMIT
42
41
36
-ILIM
IN
OUT
+ILIM
RP
RLIM
RL
FIGURE 2: 4 WIRE CURRENT LIMIT
BOOST OPERATION
With the boost feature the small signal stages of the amplifier are operated at a higher supply voltages than the amplifier’s
high current output stage. +VB (pin 1) and -VB (pin 38) are connected to the small signal stages. An additional 10V on the +VB
and -VB pin is sufficient to allow the small signal stages to drive the output stage into the triode region and improve the output
voltage swing for extra efficient operation when required. When the boost feature is not needed +VS and -VS are connected
to +VB and -VB respectively. +VB and -VB must not be operated at supply voltages less than +VS and -VS respectively.
SHUTDOWN
The output stage is turned off by applying a 5V level to HSD (pin 8) relative to LSD (pin 7). This is a non-latching circuit. As
long as HSD remains high relative to LSD the output stage will be turned off. LSD will normally be tied to signal ground but
LSD may float from -VB to +VB - 15V. Shutdown can be used to lower quiescent current for standby operation or as part of a
load protection circuit.
BIAS CLASS OPTION
Normally pin 5 (Iq) is left open. But when pin 5 is connected to pin 6 (Cc1) the quiescent current in the output stage is disabled.
This results in lower quiescent power, but also class C operation of the output stage and the resulting crossover distortion.
In many applications, such as driving motors, the distortion may be unimportant and lower standby power dissipation is an
advantage.
6
MP240U
P r o d u c t I n n o v a t i o n F r o m
MP240
CONTACTING CIRRUS LOGIC SUPPORT
For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact apex.support@cirrus.com.
International customers can also request support by contacting their local Cirrus Logic Sales Representative.
To find the one nearest to you, go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives con-
sent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent
does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-
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SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PROD-
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MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE
CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES,
BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL
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Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc.
All other brand and product names in this document may be trademarks or service marks of their respective owners.
MP240U
7
相关型号：
MP240-1
Series - Fundamental Quartz Crystal, 24MHz Nom, ROHS COMPLIANT, RESISTANCE WELD, METAL, HC-49/U, 2 PIN
CTS
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