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PDF MSA240 Data sheet ( Hoja de datos )

Número de pieza MSA240
Descripción PULSE WIDTH MODULATION AMPLIFIER
Fabricantes APEX MICROTECHNOLOGY 
Logotipo APEX MICROTECHNOLOGY Logotipo



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No Preview Available ! MSA240 Hoja de datos, Descripción, Manual

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MSMAS2A42400
Pulse Width Modulation Amplifiers
FEATURES
• LOW COST
• HIGH VOLTAGE - 100 VOLTS
• HIGH OUTPUT CURRENT - 20 AMPS
• 2kW OUTPUT CAPABILITY
• VARIABLE SWITCHING FREQUENCY
APPLICATIONS
• BRUSH MOTOR CONTROL
• MRI
• MAGNETIC BEARINGS
• CLASS D SWITCHMODE AMPLIFIER
DESCRIPTION
The MSA240 is a surface mount constructed PWM amplifier
that provides a cost effective solution in many industrial applica-
tions. The MSA240 offers outstanding performance that rivals
many much more expensive hybrid components. The MSA240
is a complete PWM amplifier including an oscillator, comparator,
error amplifier, current limit comparators, 5V reference, a smart
controller and a full bridge output circuit.The switching frequency
is user programmable up to 50 kHz. The MSA240 is built on a
thermally conductive but electrically insulating substrate that
can be mounted to a heatsink.
EQUIVALENT CIRCUIT DIAGRAM
TYPICAL APPLICATION
58-pin DIP
PACKAGE STYLE KC
CONTROL
SIGNAL
SINGLE POINT GND @ 26
20 CLK/2 OUT
RRAMP 1 RRAMP IN
24
CLK OUT
ROSC 22
ROSC
19 +5V REF OUT
13 +IN
28 2,18,26 23
58
AC
BACK
SIG DIG PWR
GND RET GND
PLATE
A OUT 35-39
PWM AMPLIFIER
17 E/A OUT
B OUT 49-53
16 E/A -IN
15 E/A +IN
2.5V
Is B
54-57
Is A
40-43
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A1
Rs A
VCC 29
5V REF
OUT
SIGNAL
GND
19
26
18
2
23
ILIM B 7
ILIM A/SHDN 10
ROSC 22
5V
REF
SIGNAL
GND
SIGNAL
GND
DIGITAL
RETURN
1K
200mV
+
-
.01F
1K
+
-
2.68K
.01F
2200pF OSC
CLK OUT 24
SMART
CONTROLLER
E/A OUT 17
E/A -IN 16
E/A +IN 15
+IN 13
RRAMP IN 1
CLK/2 OUT 20
CLK IN 21
-
+
5.36K
CLK/2
R2
R3
2200pF
+
-
Rs B
2.5V
30-34
+Vs
44-48
+Vs
TORQUE MOTOR CONTROL
With the addition of a few external components the MSA240
becomes a motor torque controller. In the MSA240 the source
terminal of each low side MOSFET driver is brought out for
Q1 Q2
35-39
current sensing via RSA and RSB. A1 is a differential amplifier
that amplifies the difference in currents of the two half bridges.
A OUT This signal is fed into the internal error amplifier that mixes the
D1 current signal and the control signal. The result is an input
Q3 49-53 signal to the MSA240 that controls the torque on the motor.
B OUT EXTERNAL CONNECTIONS
D2
Q4 54-57
I SENSE B
40-43
I SENSE A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
VIEW FROM
COMPONENT SIDE
RRAMP
ROSC
SINGLE
POINT
GND
C1 C2+ C3
AC BACK
PLATE
28
APEX TP 27
PWR
GND
58
1F
BACK PLATE
58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
PWR
GND
ISENSE B
B OUT
+Vs
ISENSE A
A OUT
+Vs
NOTES: C2 IS ELECTROLYTIC ≥10UF PER AMP OUTPUT CURRENT
VCC
C1,3 HIGH QUALITY CERAMIC ≥1.0UF
ALL +Vs MUST BE TIED TOGETHER
ALL SIG GND PINS MUST BE TIED TOGETHER
SINGLE POINT GROUND @ PIN 26
MSA2ht4tp0:U//www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
APEX MSA2M40AUYR2E0V0D91
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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 [email protected].
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-
ERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE
SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PROD-
UCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUS-
TOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF
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
LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
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.
MSA240U
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