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TPS62420-Q1

現行

具 1 線介面的車用 2.5V 至 6V、2.25MHz 固定頻率雙路 (1A/600mA) 降壓轉換器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的裝置不同
TPS62442-Q1 現行 車用 2.75-V 至 6-V、雙 2-A 或 3-A 和 1-A 輸出、可調頻率、降壓轉換器 Different output current (800 mA / 800 mA).

產品詳細資料

Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 6 Vin (min) (V) 2.5 Vout (max) (V) 6 Vout (min) (V) 0.6 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000032 Duty cycle (max) (%) 100
Rating Automotive Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 6 Vin (min) (V) 2.5 Vout (max) (V) 6 Vout (min) (V) 0.6 Features Adaptive/Dynamic Voltage Scaling, Enable, Forced PWM, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000032 Duty cycle (max) (%) 100
VSON (DRC) 10 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • High Efficiency: Up to 95%
  • VIN Range From 2.5 V to 6 V
  • 2.25-MHz Fixed Frequency Operation
  • Output Current: 600 mA and 1000 mA
  • Adjustable Output Voltage From 0.6 V to VIN
  • EasyScale Optional One-Pin Serial Interface for
    Dynamic Output Voltage Adjustment
  • Power Save Mode at Light Load Currents
  • 180° Out of Phase Operation
  • Output Voltage Accuracy in PWM Mode: ±1%
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin QFN (3×3mm)

  • Qualified for Automotive Applications
  • High Efficiency: Up to 95%
  • VIN Range From 2.5 V to 6 V
  • 2.25-MHz Fixed Frequency Operation
  • Output Current: 600 mA and 1000 mA
  • Adjustable Output Voltage From 0.6 V to VIN
  • EasyScale Optional One-Pin Serial Interface for
    Dynamic Output Voltage Adjustment
  • Power Save Mode at Light Load Currents
  • 180° Out of Phase Operation
  • Output Voltage Accuracy in PWM Mode: ±1%
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin QFN (3×3mm)

The TPS62420 device is a synchronous dual step-down dc-dc converter optimized for battery-powered portable applications. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With the EasyScale serial interface the output voltages can be modified during operation. It therefore supports Dynamic Voltage Scaling for low power DSP and processors.

The TPS62420 operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications, the devices can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin high. In the shutdown mode, the current consumption is reduced to 1.2 µA. The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS62420 is available in a 10-pin leadless package (3mm×3mm QFN).

The TPS62420 device is a synchronous dual step-down dc-dc converter optimized for battery-powered portable applications. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With the EasyScale serial interface the output voltages can be modified during operation. It therefore supports Dynamic Voltage Scaling for low power DSP and processors.

The TPS62420 operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications, the devices can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin high. In the shutdown mode, the current consumption is reduced to 1.2 µA. The device allows the use of small inductors and capacitors to achieve a small solution size.

The TPS62420 is available in a 10-pin leadless package (3mm×3mm QFN).

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TPS62410-Q1 現行 車用 2.5V 至 6V、2.25MHz 固定頻率雙路 (800mA/800mA) 降壓轉換器 Different output current (800 mA / 800 mA)

技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet TPS62420-Q1 2.25-MHz 600-mA/1000-mA Dual Step-Down Converter datasheet 2009年 12月 31日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 2012年 4月 26日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

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)。

模擬型號

TPS62420 PSpice Average Model

SLIM129.ZIP (84 KB) - PSpice Model
模擬型號

TPS62420 PSpice Transient Model

SLIM130.ZIP (310 KB) - PSpice Model
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

TIDA-050015 — 針對解決方案尺寸和低雜訊進行最佳化的車用 ADAS 攝影機電源供應參考設計

此寬輸入電源供應參考設計是專為空間有限的汽車 ADAS 攝影機應用而設計。這款尺寸最佳化的設計採用前端保護搭配廣泛輸入電壓 DC/DC 轉換器,以實現無電池運作。前端濾波器與元件選擇經過最佳化,符合嚴格的 CISPR 25 第 5 級傳導電磁干擾 (EMI) 標準。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSON (DRC) 10 Ultra Librarian

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