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參數(shù)資料
| 型號： | 5962-9168902VYA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, CDIP28 |
| 封裝： | HERMETIC SEALED, CERAMIC, DIP-28 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 298K |
| 代理商： | 5962-9168902VYA |
SLUSAG8A
– SEPTEMBER 2011 – REVISED SEPTEMBER 2011
For drives where speed is critical, P-channel MOSFETs can be driven by emitter followers as shown in
Figure 10. Here, both the level shift NPN and the PNP must withstand high voltages. A zener diode is used to
limit gate-source voltage on the MOSFET. A series gate resistor is not necessary, but always advisable to control
overshoot and ringing.
High-voltage optocouplers can quickly drive high-voltage MOSFETs if a boost supply of at least 10 V greater
than the motor supply is provided (See Figure 11) To protect the MOSFET, the boost supply should not be
higher than 18 V above the motor supply.
For under 200-V 2-quadrant applications, a power NPN driven by a small P-Channel MOSFET performs well as
a high-side driver as in Figure 12. A high voltage small-signal NPN is used as a level shift and a high voltage
low-current MOSFET provides drive. Although the NPN does not saturate if used within its limitations, the
base-emitter resistor on the NPN is still the speed-limiting component.
Figure 13 shows a power NPN Darlington drive technique using a clamp to prevent deep saturation. By limiting
saturation of the power device, excessive base drive is minimized and turn-off time is kept fairly short. Lack of
base series resistance also adds to the speed of this approach.
Figure 10. Fast High-Side P-Channel Driver
Figure 11. Optocoupled N-Channel High-Side
Driver
14
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s) :UC1625-SP
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| 5962-9169003M3A | 制造商:Analog Devices 功能描述:ADC Single SAR 12-bit Parallel 28-Pin LCC 制造商:Analog Devices 功能描述:ADC SGL SAR 12-BIT PARALLEL 28PIN LCC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:IC, 12-BIT ADC - Bulk 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC IC 12-BIT ADC 制造商:Analog Devices 功能描述:CONVERTER - ADC |
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| 5962-9169004M3C | 制造商:Exar Corporation 功能描述: |
| 5962-9169005M3A | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| 5962-9169301M2A | 制造商:Texas Instruments 功能描述:-LIFETIME BUYS TIL 03/03 |
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