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DC/DC 切換穩壓器
DC/DC 轉換器

TPS62147

現行

採用 2x3QFN 封裝且具 1% 精確度和 PFM/強制 PWM 的 3-17V 2.0A 降壓轉換器

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功能相似於所比較的產品。
TPS62902 現行 採用 1.5-mm x 2-mm QFN 封裝的 3-V 至 17-V 輸入、2-A 高效低 IQ 降壓轉換器 Improved efficiency, smaller size and lower IQ.

TPS62147

現行
立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 12 Vout (min) (V) 0.8 Features Enable, Forced PWM, Light-load efficiency, Output discharge, Overcurrent protection, Power good, Pre-Bias Start-Up, Prebias startup, Synchronous rectification, Tracking, UVLO adjustable Control mode DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000018 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 12 Vout (min) (V) 0.8 Features Enable, Forced PWM, Light-load efficiency, Output discharge, Overcurrent protection, Power good, Pre-Bias Start-Up, Prebias startup, Synchronous rectification, Tracking, UVLO adjustable Control mode DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000018 Duty cycle (max) (%) 100
VQFN-HR (RGX) 11 6 mm² (3 mm × 2 mm)
  • Output voltage accuracy ± 1% over specified TJ range (PWM mode)
  • Input voltage range: 3 V to 17 V
  • Quiescent current 18-µA typical
  • Output voltage from 0.8 V to 12 V
  • Adjustable soft start
  • Forced PWM or PWM/PFM operation
  • Switching frequency of 1.25 MHz or 2.5 MHz in forced PWM
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Automatic efficiency enhancement AEE
  • DCS-Control topology
  • Active output discharge (TPS62148)
  • HICCUP overcurrent protection (TPS62147)
  • Power-good output
  • Available in 2-mm × 3-mm VQFN package
  • Output voltage accuracy ± 1% over specified TJ range (PWM mode)
  • Input voltage range: 3 V to 17 V
  • Quiescent current 18-µA typical
  • Output voltage from 0.8 V to 12 V
  • Adjustable soft start
  • Forced PWM or PWM/PFM operation
  • Switching frequency of 1.25 MHz or 2.5 MHz in forced PWM
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Automatic efficiency enhancement AEE
  • DCS-Control topology
  • Active output discharge (TPS62148)
  • HICCUP overcurrent protection (TPS62147)
  • Power-good output
  • Available in 2-mm × 3-mm VQFN package

The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control Topology. The wide input voltage range of 3-V to 17-V make the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.

The typical quiescent current is 18 µA. In shutdown mode, the current is typically 1 µA.

The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.

The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control Topology. The wide input voltage range of 3-V to 17-V make the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.

The typical quiescent current is 18 µA. In shutdown mode, the current is typically 1 µA.

The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.
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針腳對針腳的功能與所比較的裝置相同。
TPS62135 現行 採用 2x3QFN 封裝且具 1% 精確度和 PFM/強制 PWM 的 3-17V 4.0A 降壓轉換器 This product is a pin-to-pin 2 A and 2.5-MHz switching frequency.
TPS62148 現行 採用 2x3QFN 封裝且具 1% 精確度和 PFM/強制 PWM 的 3-17V 2.0A 降壓轉換器 This product has output-voltage discharge.
TPS62136 現行 採用 2x3QFN 封裝且具 1% 精確度和 PFM/強制 PWM 的 3-17V 4.0A 降壓轉換器 This product is a pin-to-pin 2-A product and 1-MHz switching frequency.

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 TPS62147, TPS62148 High-Accuracy, 3-V to 17-V, 2-A Step-Down Converter with DCS-Control datasheet (Rev. B) PDF | HTML 2023/2/2
應用說明 Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 2020/1/8
類比設計期刊 Methods of output-voltage adjustment for DC/DC converters 2019/6/14
Application brief Supercap last gasp failsafe power for RF comunications in E-Meters 2019/1/27
類比設計期刊 Understanding 100% mode in low-power DC/DC converters 2018/6/22
技術文章 Output accuracy varies with temperature – 1% is not always 1% PDF | HTML 2018/5/2

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

TPS62148EVM-034 — 具有 fSEL 功能的 17-V 輸入、2-A 輸出、降壓轉換器評估模組

TPS62148EVM-034 的設計旨在幫助使用者輕鬆評估及測試 TPS62148 DC/DC 轉換器的運作及功能。EVM 可在高達 2A 的輸出電流下，將 3V 至 17V 的輸入電壓轉換為 3.3V 穩壓輸出電壓。TPS62148 以 1MHz 的額定切換頻率運作，並採用小型 2.0 x 3.0mm² 的 QFN 封裝。

使用指南: PDF | HTML
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模擬型號

TPS62147 PSpice Unencrypted Transient Model (Rev. B)

SLVMCO3B.ZIP (112 KB) - PSpice 模型
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計算工具

SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC

Calculator tool to adjust the power supply's output voltage with an analog input voltage
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參考設計

PMP30528 — 適用於電表的超級電容器備用電源供應參考設計

此參考設計可在斷電期間自動為智慧電表提供備用電壓。當輸入電壓介於 10V 至 12V 之間時，兩個降壓控制器 (TPS62147、TPS62173) 在 2A 時會產生 3.9V，在 150mA 時則會產生 5V。選用的同步升壓會在 50mA 時產生 3.3V。離散式充電電路會以恆定電流為超級電容器充電，最高電壓可調整至 2.7V。當輸入電壓故障時，同步升壓會接管超級電容器電壓，並將其升壓至 3.9V。超級電容器電容和電壓會定義可用於備用的能源。此設計可在 200mA 下實現穩定的 3.9V 備用輸出約 70秒，直到輸出電壓下降為止。
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VQFN-HR (RGX) 11 Ultra Librarian
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