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STL6580
STL6580系列是一款具有驅動功能的BLDC風扇控制器。它具有先進的閉環控制,旋轉速度變化範圍在±5%之內。內建的軟切換和先進的定時控制提高了馬達的效率和降低了振動。STL6580支持直接PWM輸入,不需要PWM到DC轉換的電路,因此可以減少外部元件的數量。友好的編程介面可以調整任何風扇曲線設置。該設備提供可調的PWM輸出頻率,以支持單相全波驅動。 STL6580具有軟啟動功能,配置可程式化增量佔空比,以抑制線圈電流的啟動尖波,因此可以減少啟動噪音並放寬功率預算。內建的軟切換功能可以降低聲音噪音和功率損失。該設備通過內部參考電壓提供電流限制功能。熱關閉功能可以保護設備不過熱。STL6580支援鎖定偵測並自動停止輸出電流。一旦外部負載減輕,它將自動恢復到系統規定的速度。各種開漏輸出類型,如 FG、RD、停止 RD 和反向 RD,被實現為系統監控具有 4 個或 8 個磁極的直流風扇速度的轉速計。
Features
- Support Hall sensor / Hall IC input
- Built-in On-line Tuning for iterative performance tuning
- 5Hz ~ 84 KHz PWM input frequency range with reversible polarity
- Support soft start with programmable duty cycle and soft-switch function
- Built-in soft-switch function with programmable duration
- Closed-loop fan speed control with ±5% accuracy of rotation speed
- Programmable linear curve set by [HS], [LS], and [S0]
- Programmable fan speed curve set by 6 points
- Various open-drain tachometers: FG, RD, Stop RD and Reverse RD
- Built-in programmable period for lock detection and auto recovery
- Built-in thermal protection circuit (150°C)
- Support current-limit setting internally with multi-levels (2A max)
- Wide product selection to support 4 or 8 magnetic poles
- 2-wire communication channel to program parameters in OTP memory
- Compact DFN16 package
- Green package available
- RoHS compliant and Halogen free
- Support Hall sensor / Hall IC input
應用領域