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UC1625J Arkusz danych(PDF) 1 Page - Texas Instruments |
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UC1625J Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 15 page UC1625 UC2625 UC3625 SLUS353A - NOVEMBER 1999 Brushless DC Motor Controller FEATURES • Drives Power MOSFETs or Power Darlingtons Directly • 50V Open Collector High-Side Drivers • Latched Soft Start • High-speed Current-Sense Amplifier with Ideal Diode • Pulse-by-Pulse and Average Current Sensing • Over-Voltage and Under-Voltage Protection • Direction Latch for Safe Direction Reversal • Tachometer • Trimmed Reference Sources 30mA • Programmable Cross-Conduction Protection • Two-Quadrant and Four-Quadrant Operation DESCRIPTION The UC3625 family of motor controller ICs integrate most of the functions required for high-performance brushless DC motor con- trol into one package. When coupled with external power MOSFETs or Darlingtons, these ICs perform fixed-frequency PWM motor control in either voltage or current mode while implementing closed loop speed control and braking with smart noise rejection, safe direction reversal, and cross–conduction protection. Although specified for operation from power supplies between 10V and 18V, the UC1625 can control higher voltage power devices with external level-shifting components. The UC1625 contains fast, high-current push-pull drivers for low-side power devices and 50V open-collector outputs for high-side power devices or level shifting circuitry. The UC1625 is characterized for operation over the military tem- perature range of –55 °C to +125°C, while the UC2625 is charac- terized from –40 °C to +105°C and the UC3625 is characterized from 0 °C to 70°C. (NOTE: ESD Protection to 2kV) application INFO available UDG-99045 21 27 25 22 6 28 1 15 24 3 26 10k Ω 3k Ω 10k Ω 2 19 20 16 11 20 µF 100nF 20 µF 100nF + R OSC 33k Ω 2200pF C OSC 68k Ω R T 3nF C T BRAKE 5nF 100nF 23 8 9 10 4 5 7 2nF 2nF 2nF 100nF 10k Ω 5nF 240 Ω 240 Ω 17 18 14 13 12 3k Ω 2N3906 100nF 1k 4k Ω TO OTHER CHANNELS TO OTHER CHANNELS 10 Ω 2N3904 10 Ω IRF9350 IRF532 3k Ω FROM HALL SENSORS VMOTOR +15V +5V TO HALL SENSORS VREF 0.02 Ω R S TO MOTOR 0.02 Ω R D REQUIRED FOR AVERAGE CURRENT SENSING REQUIRED FOR BRAKE AND FAST REVERSE 100 µF + UC3625 DIR QUAD TYPICAL APPLICATION |
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