30521 ON Semiconductor, 30521 Datasheet
30521
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30521 Summary of contents
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... The chip is fully compatible with the automotive voltage requirements. The 521 is ideally suited for general purpose stepper motor applications in the automotive, industrial, medical and marine environment. The AMIS−30521 is intended for use in industrial applications. The NCV70521 version is qualified for use in automotive applications. Features • ...
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Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... CLK CS SPI DI DO NXT DIR SLA CLR ERR HV20081114.3 Figure 1. Block Diagram AMIS−30521/NCV70521 Table 1. PIN DESCRIPTION Name Pin GND 1 Ground DI 2 SPI Data In CLK 3 SPI Clock Input NXT 4 Next Micro−Step Input DIR 5 Direction Input ERR 6 Error Output (Open Drain) ...
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Table 2. ABSOLUTE MAXIMUM RATINGS Symbol V Analog DC Supply Voltage (Note Logic Supply Voltage DD T Storage Temperature ST T Junction Temperature (Note Electrostatic Discharges on Component Level, All Pins (Note 3) ESD ...
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... PACKAGE THERMAL CHARACTERISTICS The AMIS−30521/NCV70521 is available in an NQFP−32 package. For cooling optimizations, the NQFP has an exposed thermal pad which has to be soldered to the PCB ground plane. The ground plane needs thermal vias to conduct the heat to the bottom layer. Figure 3 gives an example for good power distribution solutions ...
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Table 5. DC PARAMETERS (DC Parameters are Given for V and Temperature in Their Operating Ranges Unless Otherwise Specified) BB Convention: Currents Flowing in the Circuit are Defined as Positive Symbol Pin(s) SUPPLY INPUTS V Nominal Operating Supply Range BB ...
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Table 5. DC PARAMETERS (DC Parameters are Given for V and Temperature in Their Operating Ranges Unless Otherwise Specified) BB Convention: Currents Flowing in the Circuit are Defined as Positive Symbol Pin(s) DIGITAL OUTPUTS V DO, ERR Logic Low Level ...
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Table 6. AC PARAMETERS (AC Parameters are Given for V Symbol Pin(s) Parameter INTERNAL OSCILLATOR f Frequency of Internal Oscillator osc MOTORDRIVER PWM Frequency f PWM Double PWM Frequency MOTxx f PWM Jitter Depth (Note 12 MOTxx Turn−On ...
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Table 7. SPI TIMING PARAMETERS Symbol t SPI Clock Period CLK t SPI Clock High Time CLK_HIGH t SPI Clock Low Time CLK_LOW t DI Setup Time, Valid Data Before Rising Edge of CLK SET_DI t DI Hold Time, Hold ...
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... 100 Figure 6. Typical Application Schematic AMIS−30521/NCV70521 Table 8. EXTERNAL COMPONENTS LIST AND DESCRIPTION Component C V Buffer Capacitor (Low ESR < Decoupling Block Capacitor Buffer Capacitor Buffer Capacitor Charge−Pump Buffer Capacitor 6 C Charge−Pump Pumping Capacitor 7 C Low Pass Filter SLA 8 R Low Pass Filter SLA ...
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Depending on the desired current range and the micro−step position at hand, the R DS(on) transistors will be adapted such that excellent current−sense accuracy is maintained. The R DS(on) transistors remain ...
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Step Translator and Step Mode The Step Translator provides the control of the motor by means of SPI register Stepmode: SM[2:0], SPI register DIRCNTRL, and input pins DIR and NXT translating consecutive steps in corresponding currents in both ...
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Table 10. CIRCULAR TRANSLATOR TABLE 000 1/32 MSP[6:0] 000 0000 ’0’ 000 0001 1 000 0010 2 000 0011 3 000 0100 4 000 0101 5 000 0110 6 000 0111 7 000 1000 8 000 1001 9 000 1010 ...
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Table 10. CIRCULAR TRANSLATOR TABLE 000 1/32 MSP[6:0] MSP[6:0] MSP[6:0] 011 1111 63 100 0000 64 100 0001 65 100 0010 66 100 0011 67 100 0100 68 100 0101 69 100 0110 70 100 0111 71 100 1000 72 ...
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I Y Step 1 Start = 0 Step 2 Step 3 1/4th Micro Step SM[2:0] = 011 Figure 9. Translator Table: Circular and Square Direction The direction of rotation is selected by means of following combination of the DIR input ...
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Change from lower to higher resolution I Y DIR endpos NXT3 NXT4 I X Halfstep Left: change from lower to higher resolution. The left−hand side depicts the ending half−step position during which a new step mode resolution was programmed. The ...
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Previous Micro−Step I COIL V COIL V BB Because of the relatively high re−circulation currents in the coil during current decay, the coil voltage V a transient behavior. As this transient is not always desired in application software, two operating ...
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Ssh div2 V COIL div4 ICOIL = 0 PWMsh PWMsh ICOIL = 0 SLAT V COIL SLA−Pin SLAT = 1 => SLA−pin is transparent during V sampling @ coil current zero crossing. BEMF SLA−pin is updated “real−time”. Warning, Error Detection ...
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... DI signal is the output from the Master. A chip select line (CS) allows individual selection of a Slave SPI device in a multiple−slave system. The CS line is active low. If the AMIS−30521/NCV70521 is not selected pulled up with the external pull up resistor. Since AMIS−30521/NCV70521 operates as a Slave in MODE 0 (CPOL = 0 ...
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... READ from SPI Register with address ADDR[4:0]: CMD[2:0] = “000” • WRITE to SPI Register with address ADDR[4:0]: CMD[2:0] = “100” Registers are updated with the internal status at the rising edge of the internal AMIS−30521/NCV70521 clock when DATA from previous command or NOT VALID after POR or RESET DO Figure 17 ...
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... The command is followed with a data byte. This incoming data will be stored in the corresponding Control Register after AMIS−30521/NCV70521 responds on every incoming byte by shifting out via DO the data stored in the last received address important that the writing action (command − address and data) to the Control Register is exactly 16 bits long ...
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... READ Back Operation to Verify a Correct WRITE Operation NOTE: The internal data−out shift buffer of the AMIS−30521/NCV70521 is updated with the content of the selected SPI register only at the last (every eighth) falling edge of the CLK signal (see SPI Transfer Format and Pin Signals result, new data for transmission cannot be written to the shift buffer at the beginning of the transfer packet and the first byte shifted out might represent old data ...
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Table 12. SPI CONTROL PARAMETER OVERVIEW Symbol Controls the Direction of Rotation (in DIRCTRL Combination with Logic Level on Input DIR) EMC[1:0] Turn On− and Turn−off Slopes (Note 14) MOTEN Activates the Motor Driver Outputs Selects if NXT triggers on ...
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CUR[4:0] Selects IMCmax peak. This is the peak or amplitude of the regulated current waveform in the motor coils. Table 13. SPI CONTROL PARAMETER OVERVIEW: CURRENT AMPLITUDE CUR[4:0] Current Range Index (Note 16) CUR[4:0] 0 00000 1 00001 2 00010 ...
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Table 15. SPI STATUS FLAGS OVERVIEW Length (bit) Mnemonic Flag CPFail Charge Pump Failure 1 MSP[6:0] Micro Step Position 7 OPENX OPEN Coil X 1 OPENY OPEN Coil Y 1 Overcurrent at OVCXNB MOTXN Terminal; 1 Bottom Transistor Overcurrent at ...
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... DEVICE ORDERING INFORMATION Part Number Temperature Range AMIS30521C5212RG −40°C − 125°C AMIS30521C5212G −40°C − 125°C NCV70521MN003R2G* −40°C − 125°C NCV70521MN003G* −40°C − 125°C †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...
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PACKAGE DIMENSIONS NQFP−32, 7x7 CASE 560AA−01 ISSUE O http://onsemi.com 27 ...
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... USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 28 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative AMIS−30521/D ...