器件名称: MSA260
功能描述: PULSE WIDTH MODULATION AMPLIFIER
文件大小: 415.46KB 共5页
简 介:
FEATURES
LOW COST HIGH VOLTAGE - 450 VOLTS HIGH OUTPUT CURRENT - 20 AMPS 9kW OUTPUT CAPABILITY VARIABLE SWITCHING FREQUENCY IGBT FULL BRIDGE OUTPUT
APPLICATIONS
BRUSH MOTOR CONTROL MRI MAGNETIC BEARINGS CLASS D SWITCHMODE AMPLIFIER
58-PIN DIP PACKAGE STYLE KC TYPICAL APPLICATION
DESCRIPTION
The MSA260 is a surface mount constructed PWM amplier that provides a cost effective solution in many industrial applications. The MSA260 offers outstanding performance that rivals many much more expensive hybrid components. The MSA260 is a complete PWM amplier including an oscillator, comparator, error amplier, current limit comparators, 5V reference, a smart controller and a full bridge IGBT output circuit. The switching frequency is user programmable up to 50 kHz. The MSA260 is built on a thermally conductive but electrically insulating substrate that can be mounted to a heatsink.
EQUIVALENT CIRCUIT DIAGRAM
TORQUE MOTOR CONTROL
With the addition of a few external components the MSA260 becomes a motor torque controller. In the MSA260 the source terminal of each low side IGBT driver is brought out for current sensing via RSA and RSB. A1 is a differential amplier that amplies the difference in currents of the two half bridges. This signal is fed into the internal error amplier that mixes the current signal and the c……
