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FSB50250AT bảng dữ liệu(PDF) 6 Page - Fairchild Semiconductor |
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FSB50250AT bảng dữ liệu(HTML) 6 Page - Fairchild Semiconductor |
6 / 10 page 6 www.fairchildsemi.com FSB50250AT Rev. A Note: 1. Parameters for bootsrap 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 SPM ® and Micom (indicated as dotted lines) may be used to prevent improper signal due to surge noise. Signal input of SPM® is compatible with standard CMOS or LSTTL outputs. 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-frequencycharacteristics to absorb high-frequency ripple current. Figure 3. Recommended CPU Interface and Bootstrap Circuit with Parameters Note: Attach the thermocouple on top of the heatsink-side of SPM® (between SPM® and heatsink if applied) to get the correct temperature measurement. Figure 4. Case Temperature Measurement Figure 5. Temperature profile of Vts(typ.) HIN LIN Output Note 0 0 Z Both FRFET Off 0 1 0 Low side FRFET On 1 0 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 15V Line 10mF One Leg Diagram of SPM These values depend on PWM control algorithm * Example of bootstrap paramters : C 1= C2 =1mF ceramic capacitor R 5 C 5 V DC C 2 Vts * Example circuit : V phase C 4 V 20 40 60 80 100 120 140 160 0.5 1.0 1.5 2.0 2.5 3.0 3.5 THVIC [deg] |
Số phần tương tự - FSB50250AT |
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Mô tả tương tự - FSB50250AT |
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