- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98171 > TC655EUN BRUSHLESS DC MOTOR CONTROLLER, PDSO10 PDF資料下載
參數(shù)資料
| 型號： | TC655EUN |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 20/36頁 |
| 文件大小： | 706K |
| 代理商： | TC655EUN |
第1頁第2頁第3頁第4頁第5頁第6頁第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頁當前第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頁第31頁第32頁第33頁第34頁第35頁第36頁
2002 Microchip Technology Inc.
DS21734A-page 27
TC654/TC655
Figure 7-10 shows the voltage pulse at the Sense pin,
which is caused by the fan's "extra" current pulse
during PWM output turn-on.
FIGURE 7-10:
Extra Pulse at Sense Pin.
This problem occurs mainly with fans that have a cur-
rent waveshape like the one shown in Figure 7-9. For
configurations where an NPN transistor is being used
as the external drive device, the typical Rsense and
CSENSE scheme can continue to be used to sense the
fan current pulses. In order to eliminate the extra cur-
rent pulse, a slow down capacitor can be placed from
the base of the transistor to ground. A 0.1 F capacitor
is appropriate in most cases. This arrangement is
shown in Figure 7-11. This capacitor will help to slow
down the turn-on edge of the transistor and reduce the
amplitude of the extra current pulse.
For configurations using an N-channel MOSFET as the
drive device, the slow down capacitor does not fix all
conditions and the current sensing scheme must be
changed. Since the current for this type of fan always
returns to zero, the coupling capacitor (CSENSE) is not
needed. Instead, it will be replaced by an R-C configu-
ration to eliminate the voltage pulse generated by the
extra current pulse. This new sensing configuration is
shown in Figure 7-12. The values of the resistor/capac-
itor combination should be adjusted so that the voltage
pulse generated by the extra current pulse is smoothed
and is not registered by the TC654/TC655 as a true fan
current pulse. Typical values for RSLOW and CSLOW
are 1 K
and 1000 pF, respectively.
FIGURE 7-11:
Transistor Drive with CSLOW
Capacitor.
FIGURE 7-12:
FET Drive with RSLOW/
CSLOW Sense Scheme.
Sense Pin Voltage
"Extra Pulse"
VOUT PWM
FAN
RISO1
RISO2
CSENSE
12
(0.1 F typical)
SENSE2
SENSE1
VOUT
TC654/
TC655
(0.1 F typical)
CSLOW1
(0.1uF
GND
typical)
(0.1 F typical)
RSENSE2
CSENSE2
RSENSE1
CSLOW2
FAN
RSLOW2
RSLOW1
RSENSE2
RSENSE1
CSLOW1
1
2
(1000pF typical)
SENSE2
SENSE1
VOUT
TC654/
TC655
CSLOW2
(1000pF typical)
GND
(1 k
typical)
(1 k
typical)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC654EUNTR | BRUSHLESS DC MOTOR CONTROLLER, PDSO10 |
| TC665EUN | BRUSHLESS DC MOTOR CONTROLLER, PDSO10 |
| TC7106ARCPLIJL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| TC7106CPLIJL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| TC7107ARCPLIJL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC655EUNTR | 功能描述:軟開關(guān) PWM 控制器 Dual RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| TC65A | 制造商:CDE 制造商全稱:Cornell Dubilier Electronics 功能描述:Axial Leaded Aluminum Electrolytic Capacitors |
| TC65I | 制造商:CINTERION 功能描述:MODULE GSM/GPRS QUADBAND + JAVA TC65I 制造商:CINTERION 功能描述:MOD, GSM / GPRS, QUAD BAND, TCP/IP 制造商:CINTERION 功能描述:MOD, GSM / GPRS, QUAD BAND, I2C, SPI, USB, TCP/IP; No. of Channels:4; Supply Voltage Min:3.2V; Supply Voltage Max:4.5V; Frequency RF:1900MHz; Module Interface:I2C, SPI, USB; RF Coax Type:1.9 GHz; Supply Voltage Range:3.2V to 4.5V ;RoHS Compliant: Yes |
| TC65I L30960-N1150-A100 | 制造商:Gemalto 功能描述: |
| TC65I X GPIO TERMINAL | 制造商:MC TECHNOLOGIES 功能描述:MOD QUADBAND GPIO JAVA TERMIN 制造商:MC TECHNOLOGIES 功能描述:MOD, QUADBAND GPIO JAVA TERMINAL 制造商:MC TECHNOLOGIES 功能描述:MOD, QUADBAND GPIO JAVA TERMINAL; No. of Channels:4; Protocol:TCP / IP; Supply Voltage Min:8V; Supply Voltage Max:30V; Frequency RF:1.9GHz; Module Interface:RS232; Kit Features:GPRS upto 86kbps, Data CSD upto 14.4kbps, Secure Data ;RoHS Compliant: Yes |
發(fā)布緊急采購，3分鐘左右您將得到回復。