TPS628510

現行

採用 SOT583 封裝的 2.7-V 至 6-V、0.5-A、固定頻率降壓轉換器

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Features Adjustable soft start, Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Soft-start adjustable, Synchronous Rectification, Tracking, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Features Adjustable soft start, Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Soft-start adjustable, Synchronous Rectification, Tracking, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iq (typ) (µA) 17 Duty cycle (max) (%) 100
SOT-5X3 (DRL) 8 3.36 mm² 2.1 x 1.6
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) devices
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current: 17 µA (typical)
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see the TPS628501
  • Functional Safety-Capable
  • Input voltage range: 2.7 V to 6 V
  • Output voltage from 0.6 V to 5.5 V
  • 1% feedback voltage accuracy (full temperature range)
  • TJ = –40°C to +150°C
  • Family of 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) devices
  • Switching frequency in PWM: 2.25 MHz
  • External synchronization from 1.8 MHz to 4 MHz
  • Forced PWM or PWM/PFM operation
  • Quiescent current: 17 µA (typical)
  • Adjustable soft start-up to 10 ms
  • Precise ENABLE input allows:
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • For device options with selectable compensation, see the TPS628501

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current and 3-A peak current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 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 tracking the output voltage to an external source, which allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851x is available in an 8-pin 1.60-mm × 2.10-mm SOT583 package, offering a high power density solution.

The TPS62851x is a family of pin-to-pin 0.5-A, 1-A, 2-A (continuous), and 3-A (peak) high efficiency, easy-to-use, synchronous step-down DC/DC converters. They are based on a peak current mode control topology. Low resistive switches allow up to 2-A continuous output current and 3-A peak current. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PWM/PFM mode, the TPS62851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPS62851x provide a 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 tracking the output voltage to an external source, which allows external sequencing of different supply rails and limits the inrush current during start-up.

The TPS62851x is available in an 8-pin 1.60-mm × 2.10-mm SOT583 package, offering a high power density solution.

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技術文件

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類型 標題 日期
* Data sheet TPS62851x 2.7-V to 6-V, 0.5-A, 1-A, 2-A, and 3-A Step-Down Converters in a SOT583 Package datasheet (Rev. B) PDF | HTML 2022年 6月 9日
Application note How to Measure Impedance of a Power Distribution Network of a DC-DC Converter PDF | HTML 2022年 1月 20日
Application note Loop Gain Reconstruction of a Step-Down Converter from Output Impedance PDF | HTML 2022年 1月 20日
User guide TPS62851xEVM-139 Evaluation Module (Rev. A) PDF | HTML 2021年 6月 24日
Application note Improving Efficiency at Higher Loads with High Switching Frequencies PDF | HTML 2021年 6月 16日
Certificate TPS628510EVM-139 EU RoHS Declaration of Conformity (DoC) 2021年 6月 14日
Functional safety information TPS62851x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2021年 3月 24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)。

開發板

TPS628510EVM-139 — 採用 SOT583 封裝的 2.7-V 至 6-V、0.5-A 降壓轉換器的 TPS628510 評估板

TPS628510EVM 評估模組 (EVM) 可用來評估 TPS628510 裝置,是一款高頻率同步降壓轉換器,非常適合小型解決方案尺寸和高效率。此裝置著重在寬輸出電流範圍下提供高效率降壓轉換。在中至高負載下,轉換器會以 PWM 模式運作,並在輕負載下自動進入省電模式操作,以在整個負載電流範圍內保持高效率。裝置尺寸為 2.1-mm × 1.6-mm,包括採用 SOT583 封裝的接腳。
使用指南: PDF | HTML
TI.com 無法提供
開發板

TPS628511EVM-139 — 採用 SOT583 封裝評估板的 2.7-V 至 6-V、1-A 降壓轉換器

The TPS628511EVM-139 evaluation module (EVM) is used to evaluate the TPS62851x device. The TPS62851x device is a high-frequency, synchronous, step-down converter optimized for a small solution size and high efficiency. The devices focus on high-efficiency, step-down conversion over a wide output (...)
使用指南: PDF | HTML
TI.com 無法提供
模擬型號

TPS628510 PSpice Unencrypted Transient Model

SLUM912.ZIP (99 KB) - TISpice Model
參考設計

PMP41081 — 使用 C2000™ 即時微控制器的 1-kW、12-V HHC LLC 參考設計

此參考設計為一個 1-kW,400-V 至 12-V 半橋諧振 DC/DC 平臺,適用於評估採用 F280039C 微控制器的混合磁滯控制 (HHC) 負載瞬態性能。HHC 是一種結合直接頻率控制 (DFC) 和充電控制的方法,並透過增加的頻率補償斜率進行充電控制。藉由額外的內部迴路,HHC 可改善電感器-電感器-電容器 (LLC) 的負載瞬態回應性能。
Test report: PDF
參考設計

PMP40586 — 1-kW 數位控制的電流模式 LLC 參考設計

此參考設計為業界首款數位混合磁滯控制 (HHC) 解決方案,專為配備 12-V 至 54-V 輸出的伺服器 PSU 應用領域打造。此參考設計展現 UCD3138 在 400-V 至 12-V 1-kW LLC 功率級的 HHC 控制優勢。此設計可實現 8-kHz 峰值迴路頻寬。它在 2.5 A/us 的 0% 和 100% 負載轉換下保持小於 500 mV 的峰間偏差,在 2.5 A/us 的 0% 和 150% 負載轉換下保持小於 800-mV 的峰值偏差。
Test report: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-5X3 (DRL) 8 Ultra Librarian

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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