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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS65266

現行

2.7V 至 6.5V 輸入電壓、3A/2A/2A 輸出電流同步降壓轉換器

立即訂購
產品規格表

TPS65266

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Iout (max) (A) 3 Vin (min) (V) 2.7 Vin (max) (V) 6.5 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 2400 Features Enable, Frequency synchronization, Phase interleaving, Power good, Soft-start adjustable, Synchronous rectification, UVLO adjustable Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 340
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Iout (max) (A) 3 Vin (min) (V) 2.7 Vin (max) (V) 6.5 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 2400 Features Enable, Frequency synchronization, Phase interleaving, Power good, Soft-start adjustable, Synchronous rectification, UVLO adjustable Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 340
VQFN (RHB) 32 25 mm² 5 x 5
  • Operating Input Voltage Range 2.7 to 6.5 V
  • Feedback Reference Voltage 0.6 V ±1%
  • Maximum Continuous Output Current 3 A/2 A/2 A
  • Dedicated Enable and Soft Start
  • Accurate Start-Up Timing Control With Enable Pins
    Discharge
  • Forced Continuous Current (FCC) Mode at Light Load
  • Cycle-by-Cycle Current Limiting With Hiccup Mode
    Overcurrent Protection
  • Adjustable Clock Frequency 250 kHz to 2.4 MHz
  • ExternalClock Synchronization
  • Power-Good Indicator
  • Overtemperature Protection
  • Operating Input Voltage Range 2.7 to 6.5 V
  • Feedback Reference Voltage 0.6 V ±1%
  • Maximum Continuous Output Current 3 A/2 A/2 A
  • Dedicated Enable and Soft Start
  • Accurate Start-Up Timing Control With Enable Pins
    Discharge
  • Forced Continuous Current (FCC) Mode at Light Load
  • Cycle-by-Cycle Current Limiting With Hiccup Mode
    Overcurrent Protection
  • Adjustable Clock Frequency 250 kHz to 2.4 MHz
  • ExternalClock Synchronization
  • Power-Good Indicator
  • Overtemperature Protection

The TPS65266 incorporates 3 channels of high-efficiency synchronous buck converter for applications operating off the adaptor or battery with input voltage lower than 6.5 V.

The buck DC/DC converter integrates power MOSFETs for optimized power efficiency and reduces external component counts. The peak current mode control simplifies the compensation and fast transient response. High clock frequency allows smaller and low-value inductors and capacitors. External compensation supports optimized loop compensation and fast transient response. In light load condition, the buck converter operates in FCC mode for a reduction in noise susceptibility and RF interference. Cycle-by-cycle overcurrent limiting with hiccup mode limits MOSFET power dissipation in short circuit or overloading fault conditions.

The TPS65266 features a power-good supervisor circuit that monitors all converter outputs. The PGOOD pin is asserted after the output voltages in each channel are in regulation and sequencing is done.

When continuous heavy overload or short circuit increases power dissipation in the buck converter, internal thermal protection circuit shuts off the device to prevent damage. Recovery from a thermal shutdown is automatic after the device has cooled sufficiently.

The TPS65266 incorporates 3 channels of high-efficiency synchronous buck converter for applications operating off the adaptor or battery with input voltage lower than 6.5 V.

The buck DC/DC converter integrates power MOSFETs for optimized power efficiency and reduces external component counts. The peak current mode control simplifies the compensation and fast transient response. High clock frequency allows smaller and low-value inductors and capacitors. External compensation supports optimized loop compensation and fast transient response. In light load condition, the buck converter operates in FCC mode for a reduction in noise susceptibility and RF interference. Cycle-by-cycle overcurrent limiting with hiccup mode limits MOSFET power dissipation in short circuit or overloading fault conditions.

The TPS65266 features a power-good supervisor circuit that monitors all converter outputs. The PGOOD pin is asserted after the output voltages in each channel are in regulation and sequencing is done.

When continuous heavy overload or short circuit increases power dissipation in the buck converter, internal thermal protection circuit shuts off the device to prevent damage. Recovery from a thermal shutdown is automatic after the device has cooled sufficiently.
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技術文件

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類型 標題 日期
* Data sheet TPS65266 2.7- to 6.5-V Input Voltage, 3-A/2-A/2-A Output Current Triple Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 2015年 1月 12日
Application note Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) PDF | HTML 2019年 4月 1日
EVM User's guide TPS65266EVM-686 User's Guide (Rev. A) 2014年 12月 8日
Application note TPS65250/1/2/3 LAYOUT GUIDE 2013年 1月 15日

設計與開發

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開發板

TPS65266EVM-686 — 2.7V 至 6.5V 輸入、3A/2A/2A 降壓轉換器評估模組

The TPS65266EVM-686 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65266. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features.

使用指南: PDF
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模擬型號

TPS65266 Unencrypted PSpice Average Model Package (Rev. A)

SLVMAJ3A.ZIP (105 KB) - PSpice Model
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VQFN (RHB) 32 Ultra Librarian
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訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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