Brushless DC Motor Controller
www.ti.com
UC1625 UC2625 UC3625
SLUS353C – NOVEMBER 2003 – REVISED JUNE 2013
Brushless DC Motor Controller
Check for S...
Description
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 ...
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