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FSB50325A 데이터시트(PDF) 6 Page - Fairchild Semiconductor |
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FSB50325A 데이터시트(HTML) 6 Page - Fairchild Semiconductor |
6 / 12 page ©2012 Fairchild Semiconductor Corporation 6 www.fairchildsemi.com FSB50325A, FSB50325AT, FSB50325AS Rev. C5 Figure 3. Recommended MCU Interface and Bootstrap Circuit with Parameters 3rd Notes: 1. Parameters for bootstrap circuit elements are dependent on PWM algorithm. For 15 kHz of switching frequency, typical example of parameters is shown above. 2. RC-coupling (R5 and C5) and C4 at each input of Motion SPM 5 product and MCU (Indicated as Dotted Lines) may be used to prevent improper signal due to surge-noise. 3. Bold lines should be short and thick in PCB pattern to have small stray inductance of circuit, which results in the reduction of surge-voltage. Bypass capacitors such as C1, C2 and C3 should have good high-frequency characteristics to absorb high-frequency ripple-current. Figure 4. Case Temperature Measurement 3rd Notes: 4. Attach the thermocouple on top of the heat-sink of SPM 5 package (between SPM 5 package and heatsink if applied) to get the correct temperature measurement. Figure 5. Temperature Profile of VTS (Typical) HIN LIN Output Note 0 0 Z Both FRFET Off 0 1 0 Low side FRFET On 10 VDC High side FRFET On 1 1 Forbidden Shoot through Open Open Z Same as (0,0) COM VCC LIN HIN VB HO VS LO P N R 3 Inverter Output C 3 C 1 +15 V 10 F These values depend on PWM control algorithm * Example of Bootstrap Paramters : C 1= C2 = 1 F Ceramic Capacitor R 5 C 5 V DC C 2 VTS * Example Circuit : V phase C 4 V One Leg Diagram of Motion SPM ® 5 Product FSB50325A FSB50325AT 20 40 60 80 100 120 140 160 0.5 1.0 1.5 2.0 2.5 3.0 3.5 THVIC [ oC] |
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