器件名称: MSA240
功能描述: Pulse Width Modulation Amplifiers
文件大小: 214.37KB 共5页
简 介:rr oo m P r o dMSA240 u c t IIn nn no ov va a t i o n FF m
MSA240 MSA240
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
58-pin DIP PACKAGE STYLE KC TYPICAL APPLICATION
SINGLE POINT GND @ 26 20 RRAMP 1 24 ROSC 22 19 58 2,18,26 28 23 SIG DIG PWR AC GND RET GND BACK PLATE A OUT 35-39 CLK/2 OUT RRAMP IN CLK OUT ROSC +5V REF OUT PWM AMPLIFIER
DESCRIPTION
The MSA240 is a surface mount constructed PWM amplifier that provides a cost effective solution in many industrial applications. 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.
13 +IN 17 E/A OUT 16 E/A -IN 15 E/A +IN CONTROL SIGNAL 2.5V Is B 54-57 Is A 40-43 B OUT 49-53
EQUIVALENT CIRCUIT DIAGRAM
VCC 5V REF OUT SIGNAL GND
A1 Rs A Rs B
29 19 26 18 2 23
5V REF
SIGNAL GND SIGNAL GND DIGITAL RETURN 1K .01F 200mV
2.5V
30-34
+Vs
TORQUE MOTOR CONTROL
With the addition of a few external components the MSA240 becomes a mot……
