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DF69 Datasheet(PDF) 56 Page - PADAUK Technology. |
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DF69 Datasheet(HTML) 56 Page - PADAUK Technology. |
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56 / 106 page  DF69 DC Fan Controller 5-19 PWM Protection For motor application, it’s quite important to avoid ON state for both high side and low side simultaneously. DF69 provides the hardware PWM protection circuit, shown as Fig. 5-19-1; there are two hardware PWM protection modules controlled by pwmptr0 and pwmptr1 registers individually to meet single-phase BLDC application. If the low site output is in active state and matches with the state of high site, the PWM generator will be disabled to force output in inactive state. Fig. 5-19-1 Block Diagram of PWM protection PA2 PA6 PA7 PA3 PA4 pwmptr[7:5] PA0 PA2 PA3 PA4 PA6 PA7 PB0 PB1 PB7 PA1 pwmptr[3:0] Compare pwmptr.4 Match to disable PWM generator Three hardware PWM protection modules PA2 PA6 PA7 PA3 PA4 pwmptr[7:5] PA0 PA2 PA3 PA4 PA6 PA7 PB0 PB1 PB7 PA1 pwmptr[3:0] Compare pwmptr.4 Match to disable PWM generator Three hardware PWM protection modules ©Copyright 2018, PADAUK Technology Co. Ltd Page 56 of 106 PDK-DS-DF69_V003 – Apr. 18, 2018 |
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