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AM4961 Datasheet(PDF) 11 Page - Diodes Incorporated |
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AM4961 Datasheet(HTML) 11 Page - Diodes Incorporated |
11 / 14 page Data Sheet 11 May. 2011 Rev. 2. 4 BCD Semiconductor Manufacturing Limited SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4961 Typical Application Figure 11. Typical Application of AM4961 (Note 6) Note 6: *1. Ground Line Layout PGND is connected to motor supply stage and GND is connected to control stage. All ground lines from control stage are connected to GND. *2. Stability of Power Supply C1 is employed to stabilize VCC. Its capacitance is no less than 1 μF. *3. Hall Input To avoid noise, the shortest line is recommended to con- nect with Hall stage which has about 20mV hysteresis. Thus, the ideal Hall input is 50mV or over. *4. COSC Capacitor When CCP is 100pF, the COSC frequency will be 25kHz. *5. FG Output FG output terminal is open collector output which varies with phase change. *6. RD Output RD output terminal is open collector output. It is low at rotation mode and high when stopped. *7. HB Pin This pin is available to output a 1.25V Hall bias voltage. *8. VMIN Pin If this pin is disused, connect it directly with VPWM, the minimum duty cycle will be 10%. OUT2 OUT1 VCC GND VMIN CT VPWM VREF COSC HIN- FG HB RD HIN+ Hall AM4961 D1 C1 1 μF or greater R1 27k R2 10k R4 39k R6 330k R7 100k R5 100k PWM VCC L1 R3 7.5k R8 68k C2 0.33 μF C3 100pF C4 0.47 μF 1 (1) 2 (3) 3 (4) 4 (5) 5 (6) 6 (7) 7 (8) 8 (9) 9 (10) 10 (11) 11 (12) 12 (13) 13 (14) 14 (15) PGND (16) |
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