PDF AMIS-30511 Data sheet ( Hoja de datos )

Número de pieza	AMIS-30511
Descripción	Micro-Stepping Motor Driver
Fabricantes	ON Semiconductor
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No Preview Available ! AMIS-30511 Micro-Stepping Motor Driver Introduction The AMIS−30511 is a micro−stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. The AMIS−30511 contains a current−translation table and takes the next micro−step depending on the clock signal on the “NXT” input pin and the status of the “DIR” (=direction) register or input pin. The chip provides a so−called “speed and load angle” output. This allows the creation of stall detection algorithms, step loss detection, and control loops based on load−angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The AMIS−30511 is implemented in I2T100 technology, enabling both high−voltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage requirements. The AMIS−30511 is ideally suited for general−purpose stepper motor applications in the automotive, industrial, medical, and marine environment. Key Features • Dual H−Bridge for 2−phase Stepper Motors • Programmable Peak−current up to 800 mA Using a 5−bit Current DAC • On−chip Current Translator • SPI Interface • Speed and Load Angle Output • Seven Step Modes from Full−step up to 32 Micro−steps • Fully Integrated Current−sense www.Dat•aSPheWetM4U.Ccoumrrent Control with Automatic Selection of Fast and Slow Decay • Low EMC PWM with Selectable Voltage Slopes • Active Fly−back Diodes • Full Output Protection and Diagnosis • Thermal Warning and Shutdown • Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs • −40°C to 125°C Temperature Range at 800 mA Peak Current http://onsemi.com PIN ASSIGNMENT DO VDD GND DI CLK NXT DIR ERR SLA CPN CPP VCP (Top View) TSTO VBB MOTXP GND MOTXN MOTYN GND MOTYP VBB CS CLR ORDERING INFORMATION Device AMIS30511 Package SOIC 24 Shipping Tape & Reel © Semiconductor Components Industries, LLC, 2008 September, 2008 − Rev. 1 1 Publication Order Number: AMIS−30511/D 1 page AMIS−30511 Table 4. DC Parameters (The DC parameters are given for VBB and temperature in their operating ranges unless otherwise specified. Convention: currents flowing in the circuit are defined as positive.) Symbol Pin(s) Parameter Remark/Test Conditions Min. Typ. Max. DIGITAL OUTPUTS VOL DO, Logic Low level open drain ERRB IOL = 5 mA 0.5 THERMAL WARNING AND SHUTDOWN Ttw Ttsd (Notes 6,7) Thermal warning Thermal shutdown 138 145 Ttw + 20 152 CHARGE PUMP Vcp VCP Output voltage Cbuffer External buffer capacitor Cpump CPP CPN External pump capacitor SPEED AND LOAD ANGLE OUTPUT 6 V < VBB < 15 V 15 V < VBB < 30 V VBB+11 180 180 2 * VBB – 2.5 VBB+12.8 220 220 VBB+15 470 470 Vout Voff Rout Cload Gsla SLA Output voltage range Output offset the SLA pin Output resistance SLA pin Load capacitance SLA pin Gain of SLA pin = VBEMF / VCOIL 0.2 V < Vsla < Vdd − 0,2 V 0.5 -25 SLAG=0 SLAG=1 0,5 0,25 4.5 25 1 50 3. Current with oscillator running and all analogue cells active. All outputs unloaded, no floating inputs 4. Current with all analogue cells in power down. Logic is powered but no clocks running. All outputs unloaded, no floating inputs 5. Not valid for pins with internal pull−down resistor 6. Thermal shutdown and low temperature warning are derived from thermal warning. 7. No more than 100 cumulated hours in life time above Ttw Unit V °C °C V V nF nF V mV kW pF www.DataSheet4U.com http://onsemi.com 5 5 Page AMIS−30511 Table 9. Circular Translator Table MSP[6:0] 000 0000 000 0001 000 0010 000 0011 000 0100 000 0101 000 0110 000 0111 000 1000 000 1001 000 1010 000 1011 000 1100 000 1101 000 1110 000 1111 001 0000 001 0001 001 0010 001 0011 001 0100 001 0101 001 0110 001 0111 001 1000 www.DataShe0e0t41U1.0co0m1 001 1010 001 1011 001 1100 001 1101 001 1110 001 1111 010 0000 010 0001 010 0010 010 0011 010 0100 010 0101 010 0110 010 0111 010 1000 010 1001 010 1010 000 1/32 ‘0’ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 001 1/16 0* − 1 − 2 − 3 − 4 − 5 − 6 − 7 − 8 − 9 − 10 − 11 − 12 − 13 − 14 − 15 − 16 − 17 − 18 − 19 − 20 − 21 Stepmode ( SM[2:0] ) 010 1/8 0* − − − 1 − − − 2 − − − 3 − − − 4 − − − 5 − − − 6 − − − 7 − − − 8 − − − 9 − − − 10 − − 011 1/4 0* − − − − − − − 1 − − − − − − − 2 − − − − − − − 3 − − − − − − − 4 − − − − − − − 5 − − http://onsemi.com 11 % of Imax 100 1/2 Coil x Coil y 0* 0 100 − 3.5 98.8 − 8.1 97.7 − 12.7 96.5 − 17.4 95.3 − 22.1 94.1 − 26.7 93 − 31.4 91.8 − 34.9 89.5 − 38.3 87.2 − 43 84.9 − 46.5 82.6 − 50 79 − 54.6 75.5 − 58.1 72.1 − 61.6 68.6 1 65.1 65.1 − 68.6 61.6 − 72.1 58.1 − 75.5 54.6 − 79 50 − 82.6 46.5 − 84.9 43 − 87.2 38.3 − 89.5 34.9 − 91.8 31.4 − 93 26.7 − 94.1 22.1 − 95.3 17.4 − 96.5 12.7 − 97.7 8.1 − 98.8 3.5 2 100 0 − 98.8 −3.5 − 97.7 −8.1 − 96.5 −12.7 − 95.3 −17.4 − 94.1 −22.1 − 93 −26.7 − 91.8 −31.4 − 89.5 −34.9 − 87.2 −38.3 − 84.9 −43 11 Page

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