AN2533 Datasheet (data sheet) PDF





AN2533 Datasheet, Standard Space Vector Modulation

AN2533   AN2533  

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Freescale Semiconductor, Inc. Applicatio n Note AN2533/D Rev. 0, 5/2003 Standard Space Vector Modulation – 3 outputs version – XOR version TPU Function Se t (svmStd3Xor) By Milan Brejl, Ph.D. Freescale Semiconductor, Inc... Functi onal Overview Standard Space Vector Mod ulation – 3 outputs version – XOR v ersion (svmStd3Xor) is a version of the Standard Space Vector Modulation – 3 output version (svmStd3) function that uses two TPU channels to generate one PWM output channel. The TPU channel out puts are connected to an XOR gate whos output is the required PWM signal. See Figure 1. An advantage of this solution is the full range 0% to 100% of PW

AN2533 Datasheet, Standard Space Vector Modulation

AN2533   AN2533  
M duty-cycle ratios. There is no MPW (mi nimum pulse width) parameter to limit t he edge duty-cycle ratios in this versi on, unlike in the svmStd3. A disadvanta ge is that the number of assigned TPU c hannels is doubled. A1 XOR A2 B1 XOR B2 C1 C2 XOR Figure 1. Functionality of XOR version – illustration The func tion set consists of 5 TPU functions: • Standard Space Vector Modulation – 3 outputs version – XOR version – R channels (svmStd3Xor_R) Standard Space Vector Modulation – 3 outputs v ersion – XOR version – T channels ( svmStd3Xor_T) www.DataSheet4U.com www. DataSheet4U.com For More Information On This Product, Go to: www.freescale.com © Motorola, Inc., 2003 Freescale Se miconductor, Inc. AN2533/D • • • Synchronization Signal for Standard S pace Vector Modulation – 3 outputs ve rsion – XOR version (svmStd3Xor_sync) Resolver Reference Signal for Standard Space Vector Modulation – 3 outputs version – XOR version (svmStd3Xor_res ) Fault Input for Standard Space Vector Modulation – 3 outputs version – X OR version (svmStd3Xor_fault) Freescal e Semiconductor, Inc... The svmStd3Xor function generates 3 pairs of XOR gate input signals. The XOR gate outputs th en produce a 3-channel 3-phase center-a ligned PWM signal. The generated signals control external hardware, which outputs pair o








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