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DC/DC 切換穩壓器
DC/DC 轉換器

TPS62868

現行

採用 1.5-mm x 2.5-mm QFN 封裝且具 I²C 介面的 5.5-V 4-A 同步降壓轉換器

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產品規格表

TPS62868

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck, Step-Down Converter, Synchronous Buck Iout (max) (A) 4 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 3.35 Vout (min) (V) 0.2 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, I2C/PMBus, Light load efficiency, Output discharge, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, UVLO fixed, VID Interface EMI features Low parasitic Hotrod packaging Control mode COT, Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000004 Duty cycle (max) (%) 100
Rating Catalog Topology Buck, Step-Down Converter, Synchronous Buck Iout (max) (A) 4 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 3.35 Vout (min) (V) 0.2 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, I2C/PMBus, Light load efficiency, Output discharge, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, UVLO fixed, VID Interface EMI features Low parasitic Hotrod packaging Control mode COT, Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000004 Duty cycle (max) (%) 100
VQFN-HR (RQY) 9 3.75 mm² (2.5 mm × 1.5 mm)
  • 11-mΩ and 10.5-mΩ internal power MOSFETs
  • >90% efficiency (0.9-V output)
  • DCS-Control topology for fast transient response
  • Available output voltage ranges for dynamic voltage scaling (DVS) through I2C
    • Output voltage range from 0.2-V to 0.8375-V with 2.5-mV step size
    • Output voltage range from 0.4-V to 1.675-V with 5-mV step size
    • Output voltage range from 0.8-V to 3.35-V with 10-mV step size
  • 1% output voltage accuracy
  • 2.4-MHz switching frequency
  • Selection by external resistor
    • Start-up output voltage
    • I2C target address
  • Selection by I2C interface
    • Power save mode or forced PWM mode
    • Output discharge
    • Hiccup or latching short-circuit protection
    • Output voltage ramp speed
  • Thermal pre-warning and thermal shutdown
  • Power good indicator pin option with window comparator
  • I2C-compatible interface up to 3.4 Mbps
  • Available in 1.5-mm x 2.5-mm x 1.0-mm 9-pin QFN package with 0.5-mm pitch
  • Also available in WCSP package: TPS62866, 6-A synchronous step-down converter with I2C interface in 1.05-mm x 1.78-mm WCSP package
  • Create a custom design using with TPS62868/9 with the WEBENCH Power Designer
  • 11-mΩ and 10.5-mΩ internal power MOSFETs
  • >90% efficiency (0.9-V output)
  • DCS-Control topology for fast transient response
  • Available output voltage ranges for dynamic voltage scaling (DVS) through I2C
    • Output voltage range from 0.2-V to 0.8375-V with 2.5-mV step size
    • Output voltage range from 0.4-V to 1.675-V with 5-mV step size
    • Output voltage range from 0.8-V to 3.35-V with 10-mV step size
  • 1% output voltage accuracy
  • 2.4-MHz switching frequency
  • Selection by external resistor
    • Start-up output voltage
    • I2C target address
  • Selection by I2C interface
    • Power save mode or forced PWM mode
    • Output discharge
    • Hiccup or latching short-circuit protection
    • Output voltage ramp speed
  • Thermal pre-warning and thermal shutdown
  • Power good indicator pin option with window comparator
  • I2C-compatible interface up to 3.4 Mbps
  • Available in 1.5-mm x 2.5-mm x 1.0-mm 9-pin QFN package with 0.5-mm pitch
  • Also available in WCSP package: TPS62866, 6-A synchronous step-down converter with I2C interface in 1.05-mm x 1.78-mm WCSP package
  • Create a custom design using with TPS62868/9 with the WEBENCH Power Designer

The TPS62868 and TPS62869 devices are high-frequency synchronous step-down converters with I2C interface which provide an efficient, adaptive, and high power-density solution. At medium to heavy loads, the converter operates in PWM mode and automatically enters Power Save Mode operation at light load to maintain high efficiency over the entire load current range. The device can also be forced in PWM mode operation for smallest output voltage ripple. Together with its DCS-Control architecture, excellent load transient performance and tight output voltage accuracy are achieved. Through the I2C interface and a dedicated VID pin, the output voltage is quickly adjusted to adapt the power consumption of the load to the ever-changing performance needs of the application.

The TPS62868 and TPS62869 devices are high-frequency synchronous step-down converters with I2C interface which provide an efficient, adaptive, and high power-density solution. At medium to heavy loads, the converter operates in PWM mode and automatically enters Power Save Mode operation at light load to maintain high efficiency over the entire load current range. The device can also be forced in PWM mode operation for smallest output voltage ripple. Together with its DCS-Control architecture, excellent load transient performance and tight output voltage accuracy are achieved. Through the I2C interface and a dedicated VID pin, the output voltage is quickly adjusted to adapt the power consumption of the load to the ever-changing performance needs of the application.
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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 TPS62868x 2.4-V to 5.5-V Input, 4-A/6-A Synchronous Step-Down Converter with I2C Interface in QFN Package datasheet (Rev. B) PDF | HTML 2021/7/12
Application brief Suggested DC/DC Converters and PMIC for Powering DDR5, LPDDR5, and LPDDR5X Memory PDF | HTML 2026/2/17
應用說明 Closed Loop Constant Power Drive to Simplify Heater Element Control and Extend Battery Life PDF | HTML 2025/1/29
應用說明 Benefiting from Step-Down Converters with an I2C Communication Interface (Rev. B) PDF | HTML 2023/11/29
應用說明 Intro to Multi-Function Pins and Their Applications in TI Step-Down Converters (Rev. A) PDF | HTML 2022/11/17
應用說明 Understanding SOA Curves to Operate at High Output Currents and Temperature PDF | HTML 2022/5/5
白皮書 Enabling Higher Data Rates for Optical Modules With Small and Efficient Power PDF | HTML 2021/3/22

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開發板

TPS62869EVM-118 — 具 I2C 介面的高功率密度 6-A 降壓轉換器評估模組

TPS62869EVM-x (BSR118) 評估模組 (EVM) 可幫助評估採用 1.5 mm x 2.5 mm QFN 小型封裝解決方案且配備 DCS-Control 的 TPS62869 系列 6-A 降壓轉換器。EVM 可建立 0.4 V 至 1.675 V 之間的輸出電壓，並可從介於 2.4 V 和 5.5 V 之間的較高輸入電壓取得 1% 準確度輸出電壓，並在兩個電路中實作預設的 0.9-V 輸出電壓設定。  TPS62869 系列是一款高效率且精巧的解決方案，適合有限空間應用的負載點 (POL) 轉換器，如人工智慧晶片、攝影機模組、固態硬碟 (SSD) 及光學模組。
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模擬型號

TPS62868 PSpice Transient Model (for TPS6286800C)

SLUM936.ZIP (327 KB) - PSpice 模型
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TPS62868 PSpice Transient Model (for TPS628680A)

SLUM933.ZIP (303 KB) - PSpice 模型
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TPS62868 PSpice Transient Model (for TPS6286810C)

SLUM937.ZIP (326 KB) - PSpice 模型
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TPS62868 PSpice Transient Model (for TPS628681A)

SLUM934.ZIP (300 KB) - PSpice 模型
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TPS62868 PSpice Transient Model (for TPS6286820C)

SLUM938.ZIP (326 KB) - PSpice 模型
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模擬型號

TPS62868 PSpice Transient Model (for TPS628682A)

SLUM935.ZIP (302 KB) - PSpice 模型
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VQFN-HR (RQY) 9 Ultra Librarian
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