ATA6830-PKHW Atmel, ATA6830-PKHW Datasheet
ATA6830-PKHW
Specifications of ATA6830-PKHW
Related parts for ATA6830-PKHW
ATA6830-PKHW Summary of contents
Page 1
... This allows automatically accelerated and slowed down. The stepping motor is operated in compensated half-step operation. The maximum clock frequency at which the stepping motor is operated depends on the supply voltage, the chip temperature, the operating mode, and position difference. Intelligent Stepper Motor Driver ATA6830 Rev. 4575D–BCD–09/05 ...
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... Pin Configuration Figure 2-1. Pinning QFN 28 VBAT1A VBAT2A ATA6830 2 Voltage Regulator UART Command Interpreter Test Logic SM1A 3 MLP 7x7mm 0.8mm pitch SRA ATA6830 4 28 lead SM2A BUS VBAT1B SM1B SRB SM2B VBAT2B ATA6830 23 22 VBAT1B SM1B 19 SRB 18 SM2B VBAT2B 4575D–BCD–09/05 ...
Page 3
... Reference current setting. Connected externally with a resistor to AGND. The value of the resistor 26 RSET determines all internal current sources and sinks. Oscillator pin, connected externally with a capacitor to AGND. The value of the capacitance determines 27 COS the chopper frequency and the baud rate for data reception Not connected 4575D–BCD–09/05 ATA6830 3 ...
Page 4
... According to the battery voltage the stepping motor will be accelerated to a maximum step velocity. In case of under or over voltage the motor will shut off. A temperature monitoring is used for shut off at overtemperature conditions and current boost in case of low temperature. ATA6830 4 Analog Blocks VBAT ...
Page 5
... The stepping motor will be controlled by com- Step Time Memory Maximum Step Time Voltage Levels New Step Time Actual Step Time reference run new position Cruise Control Desired Position Instantaneous Position ATA6830 Temperature Signals Error Signals Stepper Motor Control 5 ...
Page 6
... Later on during data transfer every 1-0-1-0 sequence coming up randomly is used for resynchronization. Thus all tolerances that occur dur- ing operation will be eliminated. To obtain a synchronization 15% oscillator tolerance the pattern has to be sent at least 4 times. ATA6830 6 Driver Logic VBAT SM1x ...
Page 7
... START 8 DATA BIT BITS START BIT BIT STOP BIT shows the timing diagram of two commands. SPACE Figure 3-6 MESSAGE FRAME LOW BYTE START BIT BIT STOP 8 DATA BIT BITS ATA6830 PARITY BIT STOP BIT shows the mes- PARITY BIT 0 STOP BIT 7 ...
Page 8
... In this mode the stepping motor works with a reduced coil current. This may be used for end tests in the production of the application. Any command with modus or identifier different to the first reference run will be ignored. Thus it is also not possible to change modus or identifier by performing a second reference run. ATA6830 8 High Byte Data ...
Page 9
... Figure 3-7 Necessary Commands after Power-up POWER SYNCHRONIZATION UP SEQUENCE MESSAGE FRAME (Figure 8-1 on page 20) helps to reduce distortions. shows a timing diagram on how the neces- REFERENCE RUN POSITION 1 SEQUENCE POSITION (Figure 3-4 on page Figure 3-8 on page 10 ATA6830 7) should be shows the 9 ...
Page 10
... Figure 3-8. Flow Diagram for the Power-up Sequence cruise control ATA6830 10 reset state N synchronization Y idle state N 3 successive reference run commands Y reference run Y new position? N idle state 4575D–BCD–09/05 ...
Page 11
... Table 3-3 on page ATA6830 Steptime 3300 µs 2895 µs 2540 µs 2240 µs 2240 µs 2240 µs 2549 µs 2895 µs 3300 µs 3300 µs 3300 µs 3300 µs varied 12. 11 ...
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... Figure 3-9. Table 3-3. ATA6830 12 Dynamic Frequency Adaption frequency present frequency minimum frequency (300 Hz) present position Frequency Ramp Number Step Frequency (Hz) 1 303 2 345 3 394 4 446 5 493 6 538 7 575 8 613 9 649 10 680 11 714 12 741 13 769 14 800 15 826 16 855 17 877 18 901 19 926 ...
Page 13
... The current levels are increased when the temperature is below 0°C to coil A 700mA 500mA -500mA -700mA coil B 700mA 500mA -500mA -700mA Maximum Step Frequency (V once > 10.5V) BAT No operation 300 Hz (3.33 ms) 500 Hz (2.03 ms) 680 Hz (1,47 ms) 850 Hz (1.17 ms) 1000 Hz (1 ms) No operation half steps half steps ATA6830 13 ...
Page 14
... As soon as the current has reached its nominal value it is turned off again. The current flow in this state is shown in Figure 3-11. Chopper Current Control Figure 3-12. Current Flow in Halfbridge ATA6830 14 3-12a. After a blanking time of 2.5 µs to suppress turn-on peaks the current is mea- turn on signal ...
Page 15
... This will take place about 200 µs after the end of the stopbit of the low byte to guarantee a correct command recognintion in the second head- lamp. The error signal timing is shown in Figure 3-13. Error Signal Timing 4575D–BCD–09/05 MESSAGE FRAME ca. 9 Buslevel 0 BAT Figure 3-13. ERROR RESPONSE 3 s ATA6830 15 ...
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... Bus Port V BAT 2.1 Threshold voltage edge 2.2 Threshold voltage V BAT 2.3 Hysteresis 2.4 Input current V BUS *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter Note: 1. cmd = command ATA6830 16 Symbol V BAT V BAT I OUT V BUS ESD ESD T Stg jmax ...
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... I 1.6 OC_H I 1.6 OC_L 1/16 V 8.8 9.1 9.4 9_UP 8.6 8.9 9.2 9_DOWN 60 200 340 9_HYS 9.3 9.6 9.9 9_5_UP 9.1 9.4 9.7 60 200 340 9_5_HYS ATA6830 Unit Type kHz µ fcos ...
Page 18
... Distance comparator falling edges 11V to 10.5V 6.28 Distance comparator rising edges *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter Note: 1. cmd = command ATA6830 18 Symbol Min. Typ. Pin 1, 7, 15, V 9.8 10.1 10_UP 15, V 9.6 ...
Page 19
... Typ. Max. 300 500 700 2350 2400 2450 150 10 HYS 160 0 10 Symbol Value 100 to 140 PH minimum maximum 75 T 220 to 225 Peak Peak ATA6830 Unit Type Baud µ (1) cmd D (1) cmd D °C B °C B °C B °C B °C B Unit °C/s °C s °C °C/s 19 ...
Page 20
... Figure 8-1. Application Circuit ATA6830 20 GND IGN MLP 7x7mm 0.8mm pitch ATA6830 4 28 lead BUS 4575D–BCD–09/05 ...
Page 21
... Table 8-1. Reference 4575D–BCD–09/05 Bill of Material Component Oscillator capacitor Bus input capacitor Ceramic capacitor Capacitor Capacitor Capacitor Rectifier Reference resistor Bus input resistor Shunt resistor side A Shunt resistor side A ATA6830 Value 100 pF 100 nF 10 µF 100 µF 100 nF – 0. 0. ...
Page 22
... Ordering Information Extended Type Number ATA6830-PKHW 10. Package Information The package is a thermal power package MLF 7 overall size is 7 ATA6830 22 Package Remarks QFN mm, Pb-free 7 with a soldered leadframe and 28 pins. The 4575D–BCD–09/05 ...
Page 23
... Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4575D-BCD-09/05 4575D–BCD–09/05 History Put datasheet in a new template Pb-free logo on page 1 added Heading rows on Table “Absolute Maximum Ratings” on page 16 added Ordering Information on page 22 changed ATA6830 23 ...
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