A3986SLD-T Allegro MicroSystems, Inc., A3986SLD-T Datasheet
A3986SLD-T
Related parts for A3986SLD-T
A3986SLD-T Summary of contents
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Features and Benefits ▪ 2-wire step and direction interface ▪ Dual full-bridge gate drive for N-channel MOSFETs ▪ Operation over supply voltage range ▪ Synchronous rectification ▪ Cross-conduction protection ▪ Adjustable mixed decay ▪ Integrated sinusoidal ...
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... MOSFETs is provided by a bootstrap capacitor. Efficiency is enhanced by using synchronous rectification and the power FETs are protected from shoot-through by integrated crossover control and programmable dead time. Selection Guide Part Number A3986SLDTR-T Tape and reel, 4000 pieces per reel Absolute Maximum Ratings Characteristic Supply Voltage Logic Supply Voltage ...
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... GL1A RGL1A RGL1B LSS1 SENSE1 RSENSE1 P GL1B S1B GH1B CBOOT1B C1B V MOTOR Bridge2 C2A CBOOT2A GH2A RGH2A RGH2B S2A GL2A RGL2A RGL2B LSS2 SENSE2 RSENSE2 P GL2B S2B GH2B CBOOT2B C2B Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 ...
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... V – 0.2 – – – REG – – V 0.2 – – 0 0.7 V – – 150 300 – mV –1 – 1 μA 0.2 – 1 μs Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 4 ...
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... Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Units μs μ ± μA MHz V – – mV – ºC – ºC – ...
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... Full Step Half Step Quarter Step t STEPL PFD1 Percentage of Fast decay ≡ Slow Decay cycles 26% (23 cycles 100% ( ≡ Fast Decay) Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Value Units 51 ºC/W 127 ºC/W 6 ...
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... Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Step Angle ) (°) 180.0 185.6 191.3 196.9 202.5 208.1 213.8 219.4 225.0 230.6 236.3 241.9 247.5 253.1 258.8 264.4 0.00 270.0 9 ...
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... Mixed Slow Mixed 0 –38 –71 –92 STEP 100 71 Slow Slow Slow Mixed Mixed 0 –71 –100 100 71 Slow Slow Slow Mixed Mixed Mixed 0 –71 –100 Mixed Slow Slow Mixed Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Mixed Slow 8 ...
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... Figure 5. Decay Modes for Sixteenth-Step Increments Dual Full-Bridge MOSFET Driver with Microstepping Translator Slow Mixed Mixed Slow Slow Mixed Mixed Slow Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 9 ...
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... OSC OSC , in k, is typically between 50 k and 10 k. OSC , between switching one FET off and the comple least 3 periods of the master DEAD Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 10 ...
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... Internal PWM Current Control Each full-bridge is independently controlled by a fixed off- time PWM current control circuit that limits the load current in the phase to a desired value, I TRIP Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com . Initially, a diagonal pair ...
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... The portion of the DEAD off-time that the full-bridge remains in fast decay is defined by the PFD1 and PFD2 inputs. An active-low control input used to minimize and t wR(min) wR(max) Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com . 12 ...
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... MOSFETs until the voltage at VDD reaches the minimum level. Once V above the minimum level, the translator is reset to the home state, and the MOSFETs are reenabled. Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com of the MOSFET ...
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... The above are only recommendations. Each application is different and may encounter different sensitivities. Each design should be tested at the maximum current, to ensure any parasitic effects are eliminated. 14 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ...
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... Phase 2 bridge current sense input LSS2 Phase 2 low-side source connection NC No internal connection GL2B Phase 2 low-side gate drive B S2B Phase 2 motor connection B GH2B Phase 2 high-side gate drive B C2B Phase 2 bootstrap capacitor drive B connection 15 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ...
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... The in for ma tion in clud ed herein is believed rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use; nor for any in fringe ment of patents or other rights of third parties which may result from its use. ...