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MPC17511AEP/R2 датащи(PDF) 11 Page - Freescale Semiconductor, Inc |
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MPC17511AEP/R2 датащи(HTML) 11 Page - Freescale Semiconductor, Inc |
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11 / 16 page ![]() Analog Integrated Circuit Device Data Freescale Semiconductor 11 17511A TYPICAL APPLICATIONS FUNCTIONAL PIN DESCRIPTION TYPICAL APPLICATIONS Figure 7 shows a typical application for the 17511A. When applying the gate voltage to the CRES pin from an external source, be sure to connect it via a resistor equal to, or greater than, RG = V CRES/0.02 Ω. Figure 7. 17511A Typical Application Diagram CEMF SNUBBING TECHNIQUES Care must be taken to protect the IC from potentially damaging CEMF spikes induced when commutating currents in inductive loads. Typical practice is to provide snubbing of voltage transients via placing a capacitor or zener at the supply pin (VM) (see Figure 8). Figure 8. CEMF Snubbing Techniques MCU 17511A 5.0 V GND C1L C1H C2L C2H CRES EN GIN IN1 IN2 VM VDD OUT1 OUT2 Motor GOUT Solenoid RG > V CRES/0.02 Ω V CRES < 14 V RG NC NC NC NC 0.01 µF NC = No Connect 17511A 5.0 V 5.0 V C1L C1H C2L C2H CRES VM V DD OUT1 OUT2 17511A 5.0 V 5.0 V C1L C1H C2L C2H CRES VM V DD OUT1 OUT2 GND GND |
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