
The TC655 is a dual PWM mode fan speed controller with FanSense? TM technology for use with brush-less DC motors. The device allows temperature proportional speed control and therefore accomplishes lower acoustic fan noise and longer fan life. The TC655 reads the voltage provided by an external ther-mistor (or voltage output temperature sensor) and adjusts a 30% to 100% PWM duty cycle output to the fan with respect to the input temperature voltage. The PWM duty cycle can also be programmed via SMBus to allow fan speed control without the need of an external thermistor.
In normal fan operation, pulse trains are present at the SENSE pin. These pulses are used to calculate the fan RPM. The fan RPM data is used to detect a worn out, stalled, open or unconnected fan. An RPM level below the user-programmable threshold causes the TC655 to assert a logic low alert signal (FAULT). Thedefault value is 500RPM. The TC655 consumes only 0.3mA during operation and can also enter a low-power shutdown mode by setting the appropriate bit in the configuration register.
Temperature Proportional Fan Speed for Acoustic Control and Longer Fan LifeTC655 封裝圖
型號(hào) | 制造商 | 描述 | 購買 |
---|---|---|---|
TC655EUNTR | Torex | 立即購買 | |
TC655EUN | Torex | IC SUPERVISOR 1 CHANNEL 6USPC | 立即購買 |
據(jù)了解,本次集采項(xiàng)目涉及G.655光纜及混合光纜共計(jì)560皮長公里,43672芯公里,其中G.655光纜共155皮長公里,13080芯公里,混合光纜共405皮長公里,30592芯公里。
據(jù)了解,該項(xiàng)目于今年7月份招標(biāo),擬采購G.655光纜764皮長公里(43584芯公里),預(yù)算金額為537.1萬元(不含稅)。項(xiàng)目不劃分標(biāo)包,根據(jù)中標(biāo)規(guī)則,若有效投標(biāo)人數(shù)量為4家及以上,則中標(biāo)人數(shù)量為2家,中標(biāo)份額分別為60%、40%;若有...
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