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参数资料
| 型号： | 5962-9168902VYA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, CDIP28 |
| 封装： | HERMETIC SEALED, CERAMIC, DIP-28 |
| 文件页数： | 8/21页 |
| 文件大小： | 298K |
| 代理商： | 5962-9168902VYA |
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UC3724N
UC3725N
1:2
PUA
33kW
3
+12V
1nF
5kW
100nF
VMOTOR
TO MOTOR
SLUSAG8A
– SEPTEMBER 2011 – REVISED SEPTEMBER 2011
Fast High-Side N-Channel Driver with Transformer Isolation
A small pulse transformer can provide excellent isolation between the UC1625 and a high-voltage N-Channel
MOSFET while also coupling gate drive power. In this circuit (shown in Figure 14), a UC3724 is used as a
transformer driver/encoder that duty-cycle modulates the transformer with a 150-kHz pulse train. The UC3725
rectifies this pulse train for gate drive power, demodulates the signal, and drives the gate with over 2-A peak
current.
Figure 14. Fast High-Side N-Channel Driver with Transformer Isolation
Both the UC3724 and the UC3725 can operate up to 500 kHz if the pulse transformer is selected appropriately.
To raise the operating frequency, either lower the timing resistor of the UC3724 (1 k
min), lower the timing
capacitor of the UC3724 (500 pF min) or both.
If there is significant capacitance between transformer primary and secondary, together with very high output
slew rate, then it may be necessary to add clamp diodes from the transformer primary to 12 V and ground.
General purpose small signal switching diodes such as 1N4148 are normally adequate.
The UC3725 also has provisions for MOSFET current limiting. See the UC3725 data sheet for more information
on implementing this.
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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 |
| 5962-9169003MXA | 制造商:Analog Devices 功能描述:ADC Single SAR 12-bit Parallel 28-Pin CDIP 制造商:Analog Devices 功能描述:ADC SGL SAR 12-BIT PARALLEL 28CDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:IC, MONO 12-BIT ADC IC - Bulk 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC IC MONO 12-BIT ADC IC 制造商:Analog Devices 功能描述:CONVERTER - ADC |
| 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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