Advanced PWM Motor Controller

The UC1638 family of integrated circuits are advanced pulse width modula- tors intended for a variety of PWM motor drive and Amplifier applications re- quiring either uni-directional or bi-directional drive circuits. Similar in architecture to the UC1637 all necessary circuitry is included to generate an Analog error signal and modulate two bi-directional pulse train outputs in pro- portion to the error signal magnitude and polarity. Key features of the UC1638 include a programmable high speed triangle os- cillator, a 5X differential current sensing Amplifier a high slew rate error am- plifier, high speed PWM Comparators and two 50mA Open Collector as well as two 500mA totem pole output stages. The individual circuit blocks are designed to provide practical operation to switching frequencies of 500kHz. Significant improvements in circuit speed, elimination of many external pro- gramming components, and the inclusion of a differential Current Sense am- plifier, allow this controller to be specified for higher performance applications, yet maintain the flexibility of the UC1637. The Current Sense Amplifier in conjunction with the error Amplifier CAN be configured for average current feedback. The additional Open Collector outputs provide a drive signal By Texas Instruments
UC1638 's PackagesUC1638 's pdf datasheet
UC2638




UC1638 Pinout, Pinouts
UC1638 pinout,Pin out
This is one package pinout of UC1638,If you need more pinouts please download UC1638's pdf datasheet.

UC1638 Application circuits
UC1638 circuits
This is one application circuit of UC1638,If you need more circuits,please download UC1638's pdf datasheet.


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