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UC3626 датащи(PDF) 8 Page - Texas Instruments |
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UC3626 датащи(HTML) 8 Page - Texas Instruments |
8 / 23 page UCC2626, UCC3626 SLUS318B – APRIL 1999 – REVISED JANUARY 2002 8 www.ti.com APPLICATION INFORMATION The UCC3626 is designed to operate with 120 ° position sensor encoding. In this format, the three position sensor signals are never simultaneously high or low. Motors whose sensors provide 60 ° encoding, can be converted to 120 ° using the circuit shown in Figure 1. In order to prevent noise from commanding improper commutation states, some form of low-pass filtering on HALLA, HALLB, and HALLC is recommended. Passive RC networks generally work well and should be located as close as possible to the device. Figure 2 illustrates these techniques. HALLA HALLB HALLC VREF 2N2222A HALLA HALLB VREF HALLC 1 k Ω 499 Ω 1 k Ω 1 k Ω 499 Ω 1 k Ω 2.2 nF 2.2 nF 2.2 nF UDG–97182 Figure 1. Converting Hall Code From 60 ° to 120° VREF HALLA HALLB HALLC VREF HALLA HALLB VREF HALLC VREF 1 k Ω 499 Ω 499 Ω 1 k Ω 499 Ω 1 k Ω 2.2 nF 2.2 nF 2.2 nF UDG–97185 Figure 2. Passive Hall Filtering Technique |
Аналогичный номер детали - UC3626 |
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Аналогичное описание - UC3626 |
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