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DC/DC 轉換器

TPS54824

現行

採用 HotRod™ QFN 的 4.5-V 至 17-V、8-A 同步 SWIFT™ 降壓轉換器

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產品規格表

TPS54824

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
VQFN-HR (RNV) 18 12.25 mm² (3.5 mm × 3.5 mm)
  • Small 3.5-mm × 3.5-mm HotRod™ QFN package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak current mode control with fast transient response
  • 200-kHz to 1.6-MHz fixed switching frequency
  • Synchronizes to external clock
  • 0.6-V voltage reference ±0.85% over temperature
  • 0.6-V to 12-V output voltage range
  • Hiccup Current Limit
  • Safe start-up into pre-biased output voltage
  • Adjustable soft start and power sequencing
  • Adjustable input undervoltage lockout
  • 3-µA shutdown current
  • Power good output monitor for undervoltage and overvoltage
  • Output overvoltage protection
  • Non-latch thermal shutdown protection
  • –40°C to 150°C operating junction temperature
  • Small 3.5-mm × 3.5-mm HotRod™ QFN package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak current mode control with fast transient response
  • 200-kHz to 1.6-MHz fixed switching frequency
  • Synchronizes to external clock
  • 0.6-V voltage reference ±0.85% over temperature
  • 0.6-V to 12-V output voltage range
  • Hiccup Current Limit
  • Safe start-up into pre-biased output voltage
  • Adjustable soft start and power sequencing
  • Adjustable input undervoltage lockout
  • 3-µA shutdown current
  • Power good output monitor for undervoltage and overvoltage
  • Output overvoltage protection
  • Non-latch thermal shutdown protection
  • –40°C to 150°C operating junction temperature

The TPS54824 is a full-featured 17-V (19-V maximum), 8-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

The TPS54824 is a full-featured 17-V (19-V maximum), 8-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS54824 4.5-V to 17-V (19-V Maximum) Input, 8-A Synchronous SWIFT™ Step-Down Converter datasheet (Rev. B) PDF | HTML 2019/10/17
應用說明 Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part I: Filter Design for Out PDF | HTML 2024/2/27
應用說明 Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part II: Hybrid Sense Network PDF | HTML 2024/2/27
應用說明 Collection of DC/DC Buck Regulator Technical Documentation (Rev. A) PDF | HTML 2022/11/28
應用說明 DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML 2021/5/4
應用說明 Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. B) PDF | HTML 2021/4/29
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
應用說明 Non-Isolated Point-of-Load Solutions for Elkhart Lake in Industrial PC App. (Rev. A) PDF | HTML 2020/5/21
應用說明 Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 2020/1/8
應用說明 Understanding Flip Chip QFN (HotRod) and Standard QFN Performance Differences 2019/7/2
應用說明 Minimizing Output Ripple During Startup (Rev. A) 2019/5/20
應用說明 DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems 2018/12/11
應用說明 Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance 2018/11/16
應用說明 Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 2018/8/24
應用說明 Create an Inverting Power Supply Using a Synchronous Step-Down Regulator (Rev. B) 2018/6/25
更多文件說明 Common Mistakes in DC/DC Converters and How to Fix Them 2018/2/14
白皮書 Measuring various types of low-frequency noise in DC/DC switching converters 2018/2/1
類比設計期刊 Reducing noise on the output of a switching regulator 2018/1/4
應用說明 HotRod QFN Application Note 2014/4/9
應用說明 Ultra Small 5A, Adjustable Output Reference design using TPS54620 2010/5/21

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS54824EVM-779 — TPS54824 同步降壓轉換器評估模組

TPS54824EVM-779 是一款 8A 同步轉換器評估模組 (EVM)。  EVM 會從額定 12V 輸入產生 1.8V 輸出電壓。  輸入電壓範圍為 4.5V 至 17V。電路設定為在 700kHz 下運作。
使用指南: PDF | HTML
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模擬型號

TPS54824 PSpice Average Model (Rev. C)

SLVMBY0C.ZIP (57 KB) - PSpice 模型
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模擬型號

TPS54824 PSpice Transient Model (Rev. B)

SLVMBU2B.ZIP (236 KB) - PSpice 模型
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模擬型號

TPS54824 TINA-TI Average Reference Design (Rev. C)

SLVMBZ3C.TSC (153 KB) - TINA-TI 參考設計
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模擬型號

TPS54824 TINA-TI Average Spice Model (Rev. C)

SLVMBZ4C.ZIP (9 KB) - TINA-TI Spice 模型
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參考設計

TIDA-01466 — 適用於超音波前端的低電壓、低雜訊電源參考設計

此參考設計為經過最佳化的電源供應器，專為超音波成像系統中八個 16 通道接收 AFE IC 供電。此設計使用單晶片 DC-DC 轉換器 + LDO 組合穩壓器，能在將 LDO 輸入設定在剛好略高於壓降電壓的情況下充分利用 LDO PSRR，從而在效率最大化的同時減少零件數量。  此外，超低雜訊 LDO 有助於從 A/D 轉換獲得最高解析度，進而提升影像品質。此設計能夠與主時脈和系統時脈頻率同步切換頻率，協助系統設計師應用簡單的濾波技術，去除接地迴路上的電源供應器切換雜訊，或使用擴頻時脈來降低 EMI。此外，此設計採用 eFuse 裝置，提供簡單彈性的過電流防護方式。
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參考設計

TIDA-01510 — 配備 DC/DC 轉換器且可提高功率密度的雙面佈線圖參考設計

此參考設計展示了設計雙面 DC/DC 佈局的正確方法，以實現更高的電源供應密度。設計指南重點介紹了常見錯誤及避免錯誤的方法，並附上測試結果，顯示在雙面佈局中正確使用 TPS54824 元件不會影響性能。若 TPS54824 降壓轉換器的 8A 輸出過高，該設計也可使用 TPS54424 裝置，這是一款 4A 引腳兼容的替代方案。
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VQFN-HR (RNV) 18 Ultra Librarian
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