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UC3625

Texas Instruments
Part Number UC3625
Manufacturer Texas Instruments
Description Brushless DC Motor Controller
Published Oct 1, 2019
Detailed Description www.ti.com UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Brushless DC Motor Controller Check for S...
Datasheet PDF File UC3625 PDF File

UC3625
UC3625

Overview
www.
ti.
com UC1625 UC2625 UC3625 SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013 Brushless DC Motor Controller Check for Samples: UC1625, UC2625, UC3625 FEATURES 1 • Drives Power MOSFETs or Power Darlingtons Directly • 50-V 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 30 mA • Programmable Cross-Conduction Protection • Two-Quadrant and Four-Quadrant Operation DESCRIPTION The UC3625 family of motorcontroller devices integrate most of the functions required for highperformance brushless dc-motor control into one package.
When coupled with external power MOSFETs or Darlingtons, these devices 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 10 V and 18 V, the UC1625 controls higher voltage power devices with external level-shifting components.
The UC1625 contains fast, high-current push-pull drivers for low-side power devices and 50-V open-collector outputs for high-side power devices or level-shifting circuitry.
The UC1625 is characterized for operation over the military temperature range of –55°C to +125°C, while the UC2625 is characterized from –40°C to +105°C and the UC3625 is characterized from 0°C to +70°C.
(Note: ESD Protection to 2 kV) TYPICAL APPLICATION VREF +5V TO HALL SENSORS +15V VMOTOR QUAD DIR 100nF 20mF 10kW ROSC 3kW 10kW 33kW 2 22 100nF 6 1k 1 28 4kW 100nF 27 UC3625 2200pF COSC 25 15 BRAKE 21 26 3 24 23 8 9 10 + 20mF 3kW 2N3904 10W 19 11 16 2N3906 IRF9350 3kW 17 TO OTHER CHANNELS 18 14 TO OTHER CHANNELS 13 10W IRF532 12 20 457 10kW + 100mF TO MOTOR REQUIRED FOR BRA...


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