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STL6300
STL6300 是一款系統級封裝三相無刷直流電動機驅動器,配備8052 1T-架構的微控制器、16Kx8 嵌入式快閃記憶體,並整合了 5V LDO 電源管理以及內建的 6N-MOS 驅動器。此外,它還具備一個比較器,用於無傳感器檢測電動機換相,以及智能風扇通訊介面。它可以提供高達 6.5A 的驅動電流,並在 6V 到 20V 的工作電壓範圍內可靠運行。 STL6300 具有先進的閉環控制,旋轉速度變化範圍在 ±5% 之內,並具備可編程增量佔空比的軟啟動功能,以抑制線圈電流的上電尖峰,並能降低啟動噪音和減輕功率負載。另外 可以通過內部參考電壓提供電流限制功能。支援鎖定偵測並自動停止輸出電流。一旦外部負載放鬆,將自動恢復到系統指定的速度。各種Iopen-drain 輸出類型,如FG、RD、停止RD和反向RD,被實現為系統用於監控具有4、6或8個磁極的直流風扇速度的轉速計。
Features
- Absolute maximum voltage 20V
- Operating input range VBB=6V ~ 20V
- Built-in power MOSFET with peak current 6.5A
- Output short circuit protection
- Closed-loop fan speed control within ±5% accuracy of rotation speed
- Support soft-start and features anti-wind pressure start-up
- Built-in Sensorless BEMF Detection Circuit
- Support auto-phase control
- Programmable fan speed curve set by 13 points
- Wide PWM input frequency range with reverse-able polarity
- Support current-limit setting internally with multi-levels
- Built-in thermal protection circuit
- Built-in over-voltage and under-voltage protection
- Built-in programmable period for lock detection and auto recovery
- Various open-drain tachometers: FG, RD, Stop RD and Reverse RD
- Wide product selection to support 2~20 pairs magnetic poles
- One master/slave I2C interface
- Built-in In-system Program (ISP) communication to program parameters
- Two Packages for QFN24 (4mm x 4mm) and QFN28 (5mm x 5mm)
- Absolute maximum voltage 20V
應用領域