Three Phase Sensorless BLDC Motor Controller
` FT3107T
Three Phase Sensorless BLDC Motor Controller
Description
The FT3107T is a Three Phase sensorless BLDC Motor ...
Description
` FT3107T
Three Phase Sensorless BLDC Motor Controller
Description
The FT3107T is a Three Phase sensorless BLDC Motor controller. It provides several drive modes (BLDC, Pseudo-BLDC, Pseudo-SINE, Narrow BLDC) with constant/variable lead angle intended for a wide range of motor characteristics. Open/Closed loop speed adjustment can be achieved through either direct-PWM or analog voltage or frequency control, initiated by soft-start. Speed indicator is provided through a Frequency Generator output, generating digital pulse with a configurable frequency proportional to the speed of the motor. Protection functions of FT3107T are comprehensive including lock protection and automatic recovery, thermal shutdown and current limit protections. These prevent the control circuits and the motor from being damaged, particularly under stressed applications and demanding environments.
Feature
Sensorless BLDC/Pseudo-BLDC /Pseudo-SINE/Narrow BLDC drives
Two speed adjustment methods can be selected (direct-PWM and analog voltage control)
Intelligent Soft-start Constant/Variable lead angle control Open/Closed loop speed adjustment can be selected
(direct-PWM and analog voltage control). FG (Frequency Generator) output Current limit protection Built-in lock protection and automatic recovery circuit Built-in thermal shutdown protection (TSD)
FR TM BRAKE
SPEED/PWM
Block Diagram
VDD5 VREG10
FG
LDO
VCC VSS
Control Engine
ADC
xa
TSD
UVLO
BEMF
High Side Driver
Low Side...
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