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DC/DC 切換穩壓器
DC/DC 轉換器

TPS62812-Q1

現行

採用 2mm x 3mm 可潤濕側翼 QFN 封裝的車用 2.75V 至 6V、2A 降壓轉換器

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產品規格表

TPS62812-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 1, 1.1, 1.2, 1.5, 1.8, 5.5 Vout (min) (V) 0.6, 1, 1.1, 1.2, 1.5, 1.8 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed, UVLO fixed, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 100 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.7 Vout (max) (V) 1, 1.1, 1.2, 1.5, 1.8, 5.5 Vout (min) (V) 0.6, 1, 1.1, 1.2, 1.5, 1.8 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed, UVLO fixed, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 100 TI functional safety category Functional Safety-Capable
VQFN-HR (RWY) 9 6 mm² (3 mm × 2 mm)
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • Input voltage range: 2.75V to 6V
  • Family of 1A, 2A, 3A, and 4A
  • Quiescent current 15µA typical
  • Output voltage from 0.6V to 5.5V
  • Output voltage accuracy ±1% (PWM operation)
  • Adjustable soft start
  • Forced PWM or PWM and PFM operation
  • Adjustable switching frequency of 1.8MHz to 4MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Power-good output with window comparator
  • Package with wettable flanks
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C TA
  • Functional Safety-Capable
  • Input voltage range: 2.75V to 6V
  • Family of 1A, 2A, 3A, and 4A
  • Quiescent current 15µA typical
  • Output voltage from 0.6V to 5.5V
  • Output voltage accuracy ±1% (PWM operation)
  • Adjustable soft start
  • Forced PWM or PWM and PFM operation
  • Adjustable switching frequency of 1.8MHz to 4MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Power-good output with window comparator
  • Package with wettable flanks

The TPS6281x-Q1 is family of pin-to-pin 1A, 2A, 3A, and 4A synchronous automotive step-down DC/DC converters. All devices offer high efficiency and ease of use. The TPS6281x-Q1 family is based on a peak current mode control topology. The TPS6281x-Q1 is designed for automotive applications such as infotainment and advanced driver assistance systems. Low resistive switches allow up to 4A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8MHz to 4MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS6281x-Q1 automatically enter power save mode at light loads to maintain high efficiency across the whole load range. The TPS6281x-Q1 provide 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to an external source. This feature allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPS6281x-Q1 is available in a 3mm × 2mm VQFN package with wettable flanks.

The TPS6281x-Q1 is family of pin-to-pin 1A, 2A, 3A, and 4A synchronous automotive step-down DC/DC converters. All devices offer high efficiency and ease of use. The TPS6281x-Q1 family is based on a peak current mode control topology. The TPS6281x-Q1 is designed for automotive applications such as infotainment and advanced driver assistance systems. Low resistive switches allow up to 4A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8MHz to 4MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS6281x-Q1 automatically enter power save mode at light loads to maintain high efficiency across the whole load range. The TPS6281x-Q1 provide 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to an external source. This feature allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPS6281x-Q1 is available in a 3mm × 2mm VQFN package with wettable flanks.
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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 TPS6281x-Q1 2.75V to 6V, Adjustable-Frequency, Automotive, Step-Down Converter datasheet (Rev. K) PDF | HTML 2025/7/11
Product overview Mobileye EyeQ™6H – Discrete Power Tree PDF | HTML 2024/11/7
應用說明 Using the Filters with the DC/DC Step-Down Converter PDF | HTML 2023/2/2
應用說明 Loop Gain Reconstruction of a Step-Down Converter from Output Impedance PDF | HTML 2022/1/20
應用說明 How to Measure Impedance of a Power Distribution Network of a DC-DC Converter PDF | HTML 2022/1/20
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
功能安全資訊 TPS6281x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. C) PDF | HTML 2020/12/7
功能安全資訊 簡化汽車及工業領域的功 能安全認證 Download English Version 2020/6/9
Application brief Powering VCCINT_VCU Rail in Xilinx® Zynq®UltraScale+™ Family of Multiprocessors PDF | HTML 2020/6/8
應用說明 Synchronizing DC/DC Converters in a Power Tree 2020/1/16
白皮書 Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019/10/14
類比設計期刊 Methods of output-voltage adjustment for DC/DC converters 2019/6/14
類比設計期刊 Understanding 100% mode in low-power DC/DC converters 2018/6/22

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

TPS62810EVM-015 — 降壓轉換器評估模組

TPS62810EVM-015 評估模組 (EVM) 的設計目的在協助使用者輕鬆評估和測試 TPS6281X-Q1 汽車降壓轉換器系列的操作和功能。EVM 將 2.7-V 到 6.0-V 輸入電壓轉換為可提供高達 4 A 電流的穩壓 1.8-V 輸出電壓。

使用指南: PDF | HTML
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模擬型號

TPS62812-Q1 PSpice Unencrypted Transient Model (Rev. B)

SLVMCV5B.ZIP (163 KB) - PSpice 模型
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模擬型號

TPS62812-Q1 SIMPLIS Transient and Average Model (Rev. A)

SLVMD84A.ZIP (666 KB) - SIMPLIS 模型
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參考設計

PMP22063 — 具備熱/冷車啟動功能的車用儀錶板與顯示器電源參考設計

此參考設計提供汽車 HUD、中央資訊顯示器、儀表板顯示器或其它汽車顯示器的系統軌。3.3-V 匯流排是由無電池降壓轉換器產生。升壓轉換器可提供 3.3-V 至 5-V 之轉換，降壓可從 3.3-V 軌提供 1.8 V。顯示面板、CAN 匯流排、微控制器 (MCU)、FPD-Link、觸控控制器和開關組，在此設計中都是可由電源軌驅動的範例。包括 EMI 濾波和反向電池保護。
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參考設計

PMP30785 — 適用於驅動監控系統參考設計的車用多軌電源供應

此參考設計展示電子控制單元 (ECU) 驅動監控系統的非隔離式車用電源供應性能。參考設計包含我們的電源產品組合，具有九個電源插座。
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參考設計

TIPA-020000 — Mobileye EyeQ™6H 電源供應設計

此電源設計是適用於 Mobileye EyeQ™6H SoC 的離散式電源樹狀結構測試報告摘要。自動駕駛輔助系統 (ADAS) 等汽車應用採用 Mobileye EyeQ™6H 等 ADAS 網域控制器處理器。這些精密的處理器需要在極低的電壓下具有非常高的電流。這些處理器也需要非常快速的輸出電壓暫態響應，以因應處理器負載電流的步進變化。此德州儀器設計以有效率、符合成本效益的方式滿足快速暫態響應的嚴格要求。

這種離散式方法可實現負載點轉換器最佳放置，同時仍可提供具最小輸出電容的小型設計尺寸。

多通道電壓監控器用於監控所有 SoC 相關的電源軌。電源排序可透過任何外部安全 MCU 實作。

此電源設計的 (...)

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VQFN-HR (RWY) 9 Ultra Librarian
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