FD2157H-G1

FEELING TECHNOLOGY FD2157H Smart motor driver with embedded Hall sensor Features






Motor driver with high sensitivity Hall-effect sensor Open drain MOS driver output Lock-shutdown protection & auto-restart function “Soft-switch” phase-switching technique to reduce vibration and acoustic noise Thermal shutdown protection(TSD) Available in SIP-4L package For 24V DC motor / FAN systems Halogen Free General Description FD2157H is a two-phase half wave motor driver with embedded Hall-effect sensor IC. It integrates a open drain MOS driver, a high sensitivity hall-effect sensor, an event timer for rotor locked in SIP-4L package, which make the motors’ PCBs(printed circuit boards) design easy and fabricate the high efficiency and high voltage DC motors or FANs as simply as possible. For safety, Lock-shutdown function would turn the IC’s internal drivers off avoiding over-heat when the rotor is locked, and IC will try to re-start the rotor’s torque after the time of these drivers’ shutdown. Thermal-shutdown protection (TSD) ensures the internal drivers of IC are operating under a 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 Open Drain MOS Driver Oscillator Power On Reset Digital Control Logic (Event Timer) Figure.1 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 Jul. 06, 2009 P.1 FEELING TECHNOLOGY Pin Connection 1 FD2157H Marking Distinguish 2157H 2157H YMV-XX YMV- XX 2 3 4 Lot Number Mass Production Version Half month (ex :A,B ~ X) 8) VSS SO NO VDD Year (ex:2008 Figure.2 Figure.3 Pin Descriptions Name I/O FD2157H Description VDD P 1 Positive Power Supply NO O 2 Driver Output 1 SO O 3 Driver Output 2 VSS G 4 Ground Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground Functional Descriptions Refer to the block diagram (Figure.1), FD2157H 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 to achieve correct operation as soon as the power is ready.
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 open drain MOS driver.  Timer part – generates an interval of time when rotor locked event is occurred. Rev1.2 Jul. 06, 2009 P.2 FEELING TECHNOLOGY FD2157H Absolute Maximum Ratings Parameter Values Typ. Symbol Conditions Operating Temperature TOP - -40 85 ℃ Storage Temperature TST - -55 150 ℃ Output Clamp Voltage VC - 55 V min. Unit max. (1) DC Supply Voltage VDD - 32 V Supply Current IDD - 5 mA Continuous Current IO(CONT) 350 mA Hold Current IO(HOLD) 800 mA Peak Current IO(PEAK) 1000 mA 170 ℃ Junction temperature TJ Power Dissipation PD Thermal Resistance θJC Thermal Resistance θJA Magnetic Flux Density B IR-Reflow Lead Temperature TP Bop Low High Note: The magnetic pole is applied facing the branded side of the package Hysteresis Characteristics V V B Brp Bop NO B Brp Bop SO Rev1.2 Jul. 06, 2009 P.4 FEELING TECHNOLOGY FD2157H Performance Graphs RDSON vs. V DD 12 12 10 10 8 Vdd=4.5V Vdd= 12V Vdd=24V Vdd=30V 6 4 R D S ON (o h m s ) RD SON (oh m s) RDSON vs. TA 8 Ta = -40 6 Ta = 25 4 Ta = 85 2 2 0 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 0 90 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 V DD(volts) TA ( oC) Figure.4 Figure.5 Magnetic parameters vs. TA Magnetic parameters vs. V DD 30 30 Bop, Vdd=4.5V 20 Brp, Vdd=4.5V 10 Bhyst, Vdd=4.5V 0 Bop, Vdd=30V -10 Brp, Vdd=30V -20 Bhyst, dd=30V Magn etic field (G au ss) M a g n e tic f ie ld ( G au s s) 40 -30 20 10 Bop, Ta=25 Brp, Ta=25 0 Bhyst, Ta=25 -10 -20 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 TA (oC) V DD(volts) Figure.6 Figure.7 I DD vs V DD I DD vs TA 3.5 3 3 2.5 2.5 Vdd=4.5V 2 Vdd= 12V 1.5 ID D (m A ) I DD (m A) 3.5 2 Ta = -40 1.5 Ta = 25 1 Ta = 85 Vdd=24V 1 Vdd=30V 0.5 0.5 0 0 -40 -30 -20 -10 0 10 20 30 TA ( oC) Figure.8 40 50 60 70 80 90 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 V DD (volts) Figure.9 Rev1.2 Jul. 06, 2009 P.5 FEELING TECHNOLOGY FD2157H Application Circuit Reference Note 1 CN1 D1 1 2 3 VCC FGO Connector R1 U1 FD2157H 1.1mm 1.90mm L1 MOTOR L2 C1 Note 2 R2 Q1 2N2222 R3 NOTE 1. D1 is a reversed protection diode 2. Q1, R2 and R3 are FG output signal circuit Figure.10 Rev1.2 Jul. 06, 2009 P.6 FEELING TECHNOLOGY FD2157H FD2157H Output Waveforms Description VDD Re-Start Time TON NO Shutdown Time TOFF SO Iin Rotor Stop Normal Operation Time Figure.11 Rev1.2 Jul. 06, 2009 P.7 FEELING TECHNOLOGY FD2157H FD2157H Output Waveforms Measurements FD2157H +4.5V Normal Operation CH1: NO Output CH2: SO Output CH3: FGO Output CH4: Input Current Rotation Speed (FGO Output) ( ~ 791 rpm) Average Input Current ( ~ 32.5mA) Duty Cycle Ratio ( ~ 1.029) Figure.12 FD2157H +24.0V Normal Operation CH1: NO Output CH2: SO Output CH3: FGO Output CH4: Input Current Rotation Speed (FGO Output) ( ~ 3,129rpm) Average Input Current ( ~ 190mA) Duty Cycle Ratio ( ~ 1.094) Figure.13 Rev1.2 Jul. 06, 2009 P.8 FEELING TECHNOLOGY FD2157H FD2157H +24.0V Soft-Switching CH1: NO Output CH2: SO Output CH4: Input Current Peak Current ( ~ 316mA) Soft-Switching Time ( ~ 152µs) Figure.14 FD2157H +24.0V Rotor Locked Re-Start Operation CH1: NO Output CH2: SO Output CH3: FGO Output CH4: Input Current Off Time ( ~ 4.02s) On Time ( ~ 0.4s) Hold Current ( ~ 360mA) Figure.15 Rev1.2 Jul. 06, 2009 P.9 FEELING TECHNOLOGY FD2157H Package Dimension (Unit: mm) SIP-4L(Halogen Free) 5.23±0.12 2- 2- 3 5 de g. de g. 1.55±0.25 0.73±0.03 3.66±0.12 4.2±0.1 1.10mm 1.90mm Sensor location 15.0±1.0 0.457±0.025 1.27±0.025 0.39±0.05 0.38±0.05 Rev1.2 Jul. 06, 2009 P.10 FEELING TECHNOLOGY FD2157H Packing Specification BAG & BOX DIMANSION 160 mm 100 mm 200 mm FTC Logo BAG LABEL 630 mm BOX LABEL BAG 190 mm INSIDE BOX 400mm 240mm 650mm CARTON LABEL FTC Logo CARTON Packing Quantity Specifications 1,000 EA / 1 BAG 20 BAGS / 1 INSIDE BOX 4 INSIDE BOXES / 1 CARTON Order Information Part Number Operating Temperature Package Description MOQ MSL FD2157H-G1 -40 OC to +85 OC SIP-4L ±50G (B) 1,000 EA / BAG 3 Rev1.2 Jul. 06, 2009 P.11