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

Iout (max) (A) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Topology Buck Type Converter Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Features Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000017
Iout (max) (A) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Topology Buck Type Converter Switching frequency (min) (kHz) 2025 Switching frequency (max) (kHz) 2475 Features Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000017
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
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
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
封裝 引腳 下載
SOT-5X3 (DRL) 8 檢視選項

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
  • 資格摘要
  • 進行中可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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