l7200 STMicroelectronics, l7200 Datasheet
l7200
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l7200 Summary of contents
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... RECTIFICATION THERMAL SHUTDOWN AND PRETHERMAL WARNING DESCRIPTION The L7200 Mozart integrates into a single chip both spindle and VCM controllers as well as power stag- es. The device is designed for 12V disk drive appli- cation requiring up to 2.5A of spindle and 1.7A of VCM peak currents. The device is based on the sinu- soidal driving of the spindle motor. This is realized digitally by the SMOOTHDRIVE™ ...
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... L7200 DESCRIPTION (continued) Power On Reset (POR) circuitry is included. Upon detection of a low voltage condition, POR is asserted, the internal registers are reset, and spindle power circuitry is tri-stated. The BEMF is rectified providing power for actuator retraction followed by dynamic spindle braking. Three Linear regulators and a Shock Sensor circuitry are also integrated ...
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... L7200 " " L7200 PWM A BYTE TO PWM PWM B CONVERTER 9bit Resolution PWM C 12bit FLL 3x 2x 10bit 12bit Z.C. BEMF DETECTION ...
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... L7200 PIN FUNCTION Pin Types Digital Power Analog N° Pin Name 1,2 VCC +12V Power Supply after ISOFET. 3,4 VPS +12V Power Supply. 5 GND Power Ground (substrate). 6 SYSCLK Clock Frequency for system timers and counters 7 FCOM Output of Spindle zero crossing or Current Sense circuit ...
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... Maximum Supply voltage Vdd Maximum Logic supply Vin max Maximum digital input voltage Vin min Minimum digital input voltage SPINDLE Spindle peak sink/source output current Ipeak VCM Ipeak VCM peak sink/source output current Description Parameter L7200 Type ...
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... L7200 THERMAL DATA Symbol (jc) Thermal resistance Junction to case (ja)* Thermal resistance Junction to ambient Ptot* Maximum Total Power Dissipation Tstg,Tj Maximum storage/junction temperature * In typical application with multilayer 120x120mm Printed Circuit Board. RECOMMENDED OPERATING CONDITIONS Symbol Vdd Supply Voltage Vcc Logic Supply Voltage Tamb ...
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... VOS INPUT OFFSET VOLTAGE Test Condition INPUT RISING INPUT FALLING Vdd > 2V and sink 1mA 3.135 2.375 V ISOURCE = 20 A Vdd- ISOURCE = -400 A 1 LSB Change - Tested - By design REFERENCED TO V CC/4 REFERENCED TO V CC/4 DC L7200 Min. Typ. Max. Unit 1.20 1.25 1. 500 W 80 mSec 8 ...
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... L7200 ELECTRICAL CHARACTERISTCS (continued) Symbol Parameter VICM INPUT COMMON MODE RANGE FODB UNITY GAIN BANDWIDTH VCM, POWER STAGE R Output On Resistance (Each DS(ON) Device) I Operating Current o I Output Leakage Current O(LEAK) VCM, CURRENT SENSE AMPLIFIER A Voltage Gain V V Input Common Mode Range ICM ...
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... Open Loop Gain FodB Unity Gain Bandwidth V Offset Voltage offset SHOCK SENSOR - OUTPUT WINDOW COMPARATOR V Vth High H V Vth Low L Test Condition Reg# 2 Reg# 2 Iload < 0.6A Iload < 0.6A I < 0.2A load Referred to Vcc/4 Referred to Vcc/4 L7200 Min. Typ. Max. Unit mVp 3.8 4.0 4.2 V 3.15 3.3 3. ...
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... L7200 SERIAL PORT PARAMETER SCLK Period SCK SCLK low time CKL SCLK high time CKH Enable to SCLK (T ) SDENS SCLK to disable (T ) SDENH Data set-up time before rising edge SCLK (T Data hold time ( Minimum SDEN low time (T ) SDENL Figure 1. Serial Port Timing Information ...
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... Normal condition. “1” in External mode, initiate the Inductive Sense “0” Spindle Outputs Enabled. “1” Disabled. Spindle Internal Spin Up. Energization Time. First Bit. Spindle Internal Spin Up. Energization Time. Second Bit. L7200 DATA, 8 BITS Bit 7 Bit 6 Time 0 0 10mS ...
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... L7200 INTERNAL REGISTERS DEFINITION (continued) Reg: 1 Name: Spindle Set-Up 0 Register Type: Write only Address: 1Eh BIT LABEL 0 SMOOTH 1 BIPMASK 2 MINON 0 3 MINON 1 4 BIPDELAY 5 MASKSPIN 0 6 MASKSPIN 1 7 FREEZE Reg: 2 Name: Spindle Set-Up 1 Register Type: Write only Address: 2Eh BIT LABEL ...
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... Bit 3 of Spindle FLL Coarse Counter. DESCRIPTION Bit 4 of Spindle FLL Coarse Counter. Bit 5 of Spindle FLL Coarse Counter. Bit 6 of Spindle FLL Coarse Counter. Bit 7 of Spindle FLL Coarse Counter. Bit 8 of Spindle FLL Coarse Counter. Bit 9 of Spindle FLL Coarse Counter. L7200 13/23 ...
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... L7200 INTERNAL REGISTERS DEFINITION (continued) BIT LABEL 6 FLLCOARSE<10> 7 FLLCOARSE<11> Reg: 5 Name: Spindle FLL Fine Register Type: Write only Address: 5Eh BIT LABEL 0 FLLFINE<0> 1 FLLFINE<1> 2 FLLFINE<2> 3 FLLFINE<3> 4 FLLFINE<4> 5 FLLFINE<5> 6 FLLFINE<6> 7 FLLFINE<7> Reg: 6 Name: Spindle Set-Up 3 Register Type: Write only Address: 6Eh BIT ...
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... Bit 1 of Spindle FLL filter coefficient B0. Bit 2 of Spindle FLL filter coefficient B0. Bit 3 of Spindle FLL filter coefficient B0. Bit 4 of Spindle FLL filter coefficient B0. Bit 5 of Spindle FLL filter coefficient B0. Bit 6 of Spindle FLL filter coefficient B0. Bit 7 of Spindle FLL filter coefficient B0. L7200 15/23 ...
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... L7200 INTERNAL REGISTERS DEFINITION (continued) Reg: 9 Name: Spindle FLL Filter Coefficient B1 Register Type: Write only Address: 9Eh BIT LABEL 0 COEFF_B1<0> 1 COEFF_B1<1> 2 COEFF_B1<2> 3 COEFF_B1<3> 4 COEFF_B1<4> 5 COEFF_B1<5> 6 COEFF_B1<6> 7 COEFF_B1<7> Reg: 10 Name: Voice Coil DAC 0 Register Type: Write only Address: AEh BIT LABEL 0 VCMDAC<0> ...
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... VCM Current control. “0” Linear mode. “1” PSM mode. “0” VCM Disabled. “1” VCM Enabled. DESCRIPTION Retract Voltage. First Bit. Retract Voltage. Second Bit. Retract Voltage. Third Bit. Retract Time. First Bit. Retract Time. Second Bit. L7200 Bit 2 Bit 1 Bit 0 Voltage ...
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... L7200 INTERNAL REGISTERS DEFINITION (continued) BIT LABEL 5 RETDIR 6 RETRACT 7 RETBRK Reg: 13 Name: Voice Coil Set-Up and Ramp Loading Register Type: Write only Address: DEh BIT LABEL 0 VCMCAL0 1 VCMCAL1 2 VCMCAL2 3 VCMCAL3 4 VCMCALDIR 5 RAMPLOADING 6 SAMPLE/HOLD 7 TRISTATE 18/23 DESCRIPTION Retract Direction. “0” VCM- high, VCM+ low. “1” VCM- low, VCM+ high. ...
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... Indicates that the Phase reading of the motor succeded. “1” Indicates that the Spindle BEMF is not detected. Inductive Sense Phase detected. First Bit. Inductive Sense Phase detected. Second Bit. Inductive Sense Phase detected. Third Bit. “1” Indicateds a Back rotation of the Spindle Motor. L7200 19/23 ...
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... L7200 INTERNAL REGISTERS DEFINITION (continued) Reg: 16 Name: System Diagnostic Register Type: Read only Address: 1Fh BIT LABEL 0 PHASEFINE<0> 1 PHASEFINE<1> 2 PHASEFINE<2> 3 PHASEFINE<3> 4 THWARNING 5 THSHUTDOWN 6 VCMCAL 7 RET Reg: 17 Name: ID Register Type: Read only Address: 2Fh BIT LABEL 0 ID_REV0 1 ID_REV1 2 ID_REV2 3 ID_REV3 4 ID_REV4 5 ID_REV5 ...
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... F Analog Ground OUT_A CTAP 5V " " TQFP64 0.25ohm 47nF 1 W 1N4148 VCM_A- VCM_A+ VCC Power Ground VCM Ground L7200 0.3ohm / 1W 12V 10 ISENSE 33 VREG8_DRV VREG8_IN 10uF 3 12V VPS 5V 4 VPS 29 VREG3.3_DRV ...
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... L7200 mm DIM. MIN. TYP. MAX. MIN. A 1.60 A1 0.05 0.15 0.002 A2 1.35 1.40 1.45 0.053 B 0.18 0.23 0.28 0.007 C 0.12 0.16 0.20 0.0047 0.0063 0.0079 D 12.00 D1 10.00 D3 7.50 e 0.50 E 12.00 E1 10.00 E3 7.50 L 0.40 0.60 0.75 0.0157 0.0236 0.0295 L1 1.00 K (min.), 7 (max 22/23 inch MECHANICAL DATA TYP. MAX. 0.063 0.006 0.055 0.057 0.009 0.011 0.472 0.394 0.295 ...
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... L7200 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...