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FD0250fR-G1 반도체 회로 부품 판매점

Smart motor driver



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Feeling Technology
FD0250fR-G1 데이터시트, 핀배열, 회로
FEELING
TECHNOLOGY
FD0250f
Smart motor driver with embedded Hall sensor
Features
Motor driver with high sensitivity Hall-effect sensor
H-Bridge MOS driver
Lock-shutdown protection & auto-restart function
Built-in Alarm Signal Output (RD)
“Soft-switch” phase-switching technique to reduce vibration and acoustic noise
Thermal shutdown protection (TSD)
PWM mode variable speed control
Available in TS826 package
For 5V DC motor / FAN systems
Halogen Free
General Description
FD0250f is a single-phase full-wave motor driver with embedded Hall-effect sensor. It integrates a H-bridge MOS
driver, a high sensitivity Hall-effect sensor, an event timer for locked rotor detection, and the variable speed control
function with the alarm signal output logic into the ultra-small TS826 package, which make the motors’ PCB (printed
circuit board) design easier and the fabrication of small-size DC motors or FANs as simple as possible.
The external system could read the alarm signal of rotation from RD signal of FD0250f.
For safety, Lock-shutdown function turns the IC’s internal driver off to avoid over-heating when the rotor is locked,
and the IC will try to re-start the motor after the shutdown interval.
Thermal-shutdown protection (TSD) ensures the internal driver of IC is operating under the safe operating
temperature range.
All the protection mechanisms mentioned above combine to provide a complete protecting scenario in the motor
system and avoid any possible damages and guarantee under a correct and safe operation.
Block Diagram
Bias Generator
Hall Plate
Chopper Amplifier PWM Control
Oscillator
Power On
Reset
Digital Control Logic
(Event Timer)
Figure.1
H-Bridge
MOS Driver
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev1.2 June. 16, 2009
P.1


FD0250fR-G1 데이터시트, 핀배열, 회로
FEELING
TECHNOLOGY
Pin Connection
FD0250f
FD0250f
65
ch
12
4
g
3
Figure.2
Pin Descriptions
Name
I/O FD0250f
Description
RD O 1
Alarm Signal Output
VSS
G
2
Ground
NO O 3
Driver Output 1
SO O 4
Driver Output 2
VCC
P
5
Positive Power Supply
VDD
P
6
Positive Power Supply
Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground
Functional Descriptions
Refer to the block diagram (Figure.1), FD0250f is composed of the following building blocks:
Bias generator
The bias generator provides precise, temperature- and process-insensitive bias references for the analog blocks.
These references guarantee proper operation of the IC under all conditions specified in this specification.
Oscillator
The built-in oscillator provides the clock signal for the digital control logic.
Power On Reset
Used to detect the power-up ramp and reset the digital circuits.
Chopper Amplifier
To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design. Use of this
structure dynamically removes both the offset and flicker noise at the same time.
Digital Control Logic
Hall sensor part – generates magnetic pole signals from the Hall-effect sensor.
Driver part – generates switching signals to the H-Bridge MOS driver.
Timer part – generates an interval of time when rotor locked event is occurred.
Signal part – generates a alarm signal (RD) output.
Rev1.2 June. 16, 2009
P.2




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