Product specifications
MSA260KC - Pulse Width Modulation Amplifier, 450V, 20A
The MSA260 is a surface mount constructed PWM amplifier 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 amplifier including an oscillator, comparator, error amplifier, 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.
TYPICAL APPLICATION : 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 amplifier that amplifies the difference in currents of the two half bridges. This signal is fed into the internal error amplifier that mixes
the current signal and the control signal. The result is an input signal to the MSA260 that controls the torque on the motor.
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
- APEX Microtechnology product -