- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299960 > TDA21801 (INFINEON TECHNOLOGIES AG) AC MOTOR CONTROLLER, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | TDA21801 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 運動控制電子 |
| 英文描述： | AC MOTOR CONTROLLER, PDSO8 |
| 封裝： | GREEN, PLASTIC, DSO-8 |
| 文件頁數(shù)： | 7/30頁 |
| 文件大?。?/td> | 836K |
| 代理商： | TDA21801 |
第1頁第2頁第3頁第4頁第5頁第6頁當前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
FanControl
Page 15 of 30
DS-FanControl-TDA21801
6.3 Digital Control parameters
6.3.1 Function of the speed loop
The VCO sets the length of the FanM pulse (TFanM = 16*Tvco). The length of this pulse is fixed for fixed
VCO frequency. The speed loop tries to keep the FanM duty cycle of 12.5% stable. For fixed VCO
frequency this means that the fan speed is stable. If the VCO frequency is increased, the FanM pulse
length TFanM is decreased, so with the previous fan speed the duty cycle is lower than 12.5%.
The speed loop then increases the fan speed to achieve 12.5% duty cycle. This happens by reducing
TRSOUT.
If the duty cycle is too high, this means the FanM frequency and fan speed is too high, the TRSOUT
output is increasing (voltage across fan is decreasing).
If the duty cycle is too low, this means the FanM frequency and fan speed is too low, the TRSOUT
output is decreasing (voltage across fan is increasing). At power-on and every time the fan is turned on
starting from not rotating condition the applied voltage on TRSOUT is 6.8V referenced to VDD.
6.4 Power Output Stage parameters
The output of the DAC is amplified to the output TRSOUT.
The power output stage is connected with an external transistor to control the fan. There is an
intentional internal coupling of fast VDD supply voltage variations to the output TRSOUT to keep the
voltage across the fan stable. The ratio between supply variations and voltage variations across VDD-
TRSOUT is expressed as PSRR in the table below.
相關PDF資料 |
PDF描述 |
|---|---|
| TDA4605 | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDIP8 |
| TDA4863-2G | POWER FACTOR CONTROLLER, PDSO8 |
| TDA8042MDK-T | 175 MHz - 325 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR |
| TDC550MM-5 | INTERCONNECTION DEVICE |
| TDP08H0SBD1R | PIANO DIP SWITCH-8SWITCHES, SPST, MOMENTARY,0.025A, 24VDC, SURFACE MOUNT-STRAIGHT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA21801XUMA1 | 制造商:Infineon Technologies AG 功能描述:Fan Motor Speed Controller 12V 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:DC/DC IC - Tape and Reel |
| TDA22003 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:10 +10W STEREO AMPLIFIER |
| TDA224K35CB | 制造商:SHARMA 制造商全稱:Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
| TDA224K50CB | 制造商:SHARMA 制造商全稱:Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
| TDA225K10CB | 制造商:SHARMA 制造商全稱:Sharma Electro Components,Inc 功能描述:Tantalum Capacitors |
發(fā)布緊急采購，3分鐘左右您將得到回復。