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東芝新推出採用智慧相位控制及閉環速度控制技術之三相無刷馬達控制預驅動IC

October 29, 2019

Toshiba Electronic Devices & Storage Corporation

TC78B027FTG

東芝電子元件及儲存裝置株式會社(東芝)推出最新搭載智慧相位控制(InPAC)技術的三相無刷馬達控制預驅動IC – TC78B027FTG,其可在高速伺服器風扇、鼓風機和泵浦等應用中實現最佳工作效率。 並於10月開始量產出貨。

近年來,隨著伺服器容量和性能的提高,需要更大型、更高速風扇來散熱。
同樣地,小型鼓風機、真空裝置和泵浦也需要與大功率容量的高速葉輪配合使用。此款無刷馬達控制器,配備預驅動器,並可驅動多種外部MOSFET。

其也採用智慧相位控制(InPAC)和閉環速度控制技術(Closed loop speed control)。InPAC透過同步驅動電壓和電流的相位來實現高效率驅動,進而為負載提供最大有效功率。如果缺少某種補償,通常無法實現此操作,而補償一般需要預先進行大量的馬達特性分析和即時調整操作,才能在整個速度範圍內獲得最佳效率。另一方面,InPAC是一項自動功能,需在設計過程中進行初始化,減輕調整負擔並縮短開發時間。

閉環速度控制功能可在動態功率波動和負載變化的情況下,調節並保持馬達轉速,這對伺服器風扇等關鍵型應用及其他散熱應用而言相當重要。速度的精確設定是透過內建的非揮發性記憶體(NVM)完成的,因此無需使用外部微控制 (MCU)即可進行閉環速度控制。

此款IC提供最佳解決方案;採用霍爾感測器進行轉子位置偵測;傳統型三個霍爾感測器馬達也可採其一霍爾(Hall)感測器使用,簡化用戶的馬達選擇方案。

低功耗應用,設計人員可考慮TC78B027FTG全面整合的驅動器版本,另一款TC78B025FTG,則涵蓋16V/3.5A應用。 

產品特點

  • 智慧相位控制可在較廣的工作範圍內最佳效率化
    由東芝自行開發的InPAC技術可在各種轉速下,實現最佳自動化的高效率驅動,同時減輕調整負擔。
  • 干擾下保持穩定轉速
    閉環速度控制功能可調節由供電電壓和負載變化引起的馬達轉速波動。無需外部MCU,此IC內建用於速度設定的NVM。
  • 使用適當的外部FET,可靈活用於各種功率應用
    可使用各種FET,並涵蓋廣泛的中低功率應用。

應用

伺服器冷卻風扇、鼓風機。 

產品規格

Product name

TC78B027FTG

Supply voltage (operating range)

5 to 16V

Drive mode

Sine-wave drive

Features

Intelligent Phase Control (InPAC)

Selectable closed loop or open loop speed control

Standby function

FET gate current configuration for Slew Rate Control

Soft start function

Supports speed control by PWM signal input and analog voltage input

Requires only 1 Hall sensor

Supports Hall element analog or Hall IC digital position signal

Package

VQFN24 (4mm×4mm×0.9mm)

Stock Check & Purchase

For more information about the new product, please visit:
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  • TC78B027FTG

*Company names, product names, and service names may be trademarks of their respective companies.

Customer Inquiries

System Devices Marketing Dept.II

Tel: +81-3-3457-3332

Contact

台灣地區

台灣東芝電子零組件股份有限公司

TEL: +886-(0)2-25089988

Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

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