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DC/DC 控制器

TPS40170

現行

4.5 V 至 60 V 大範圍輸入同步 PWM 降壓控制器

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產品規格表

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，但針腳輸出與所比較的裝置不同。
LM5141 現行 低 Iq、寬輸入範圍雙同步降壓控制器 Optional spread spectrum for improved EMI in a smaller package footprint.
LM5148 現行 3.5-V 至 80-V、電流模式同步降壓轉換器 Single output stackable to two phases, smaller footprint, lower IQ, and greater efficiency.

TPS40170

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 60 Vin (min) (V) 4.5 Vout (max) (V) 57 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Duty cycle (max) (%) 95 Iq (typ) (A) 0.0045 Number of phases 1 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 60 Vin (min) (V) 4.5 Vout (max) (V) 57 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Duty cycle (max) (%) 95 Iq (typ) (A) 0.0045 Number of phases 1 Operating temperature range (°C) -40 to 125
VQFN (RGY) 20 15.75 mm² (4.5 mm × 3.5 mm)
  • New, similar products available:
    • LM5145 75-V synchronous buck controller with wide input voltage and duty cycle ranges
    • LM5146 100-V synchronous buck DC/DC controller with wide duty-cycle range
  • Wide input voltage range from 4.5 V to 60 V
  • Reference voltage of 600 mV with 1% accuracy
  • Programmable UVLO and hysteresis
  • Voltage mode control with voltage feed forward
  • Programmable frequency between 100 kHz and 600 kHz
  • Bi-directional -frequency synchronization with primary and secondary option
  • Low-side FET sensing overcurrent protection and high-side FET sensing short-circuit protection with integrated thermal compensation
  • Programmable closed loop soft-start
  • Supports pre-biased outputs
  • Thermal shutdown at 165°C with hysteresis
  • Voltage tracking
  • Power good
  • ENABLE with 1-µA low current shutdown
  • LDO output of 8.0 V and 3.3 V
  • Integrated Bootstrap Diode
  • 20-Pin 3.5 mm × 4.5 mm VQFN (RGY) package
  • Create a Custom Design with WEBENCH Tools
  • New, similar products available:
    • LM5145 75-V synchronous buck controller with wide input voltage and duty cycle ranges
    • LM5146 100-V synchronous buck DC/DC controller with wide duty-cycle range
  • Wide input voltage range from 4.5 V to 60 V
  • Reference voltage of 600 mV with 1% accuracy
  • Programmable UVLO and hysteresis
  • Voltage mode control with voltage feed forward
  • Programmable frequency between 100 kHz and 600 kHz
  • Bi-directional -frequency synchronization with primary and secondary option
  • Low-side FET sensing overcurrent protection and high-side FET sensing short-circuit protection with integrated thermal compensation
  • Programmable closed loop soft-start
  • Supports pre-biased outputs
  • Thermal shutdown at 165°C with hysteresis
  • Voltage tracking
  • Power good
  • ENABLE with 1-µA low current shutdown
  • LDO output of 8.0 V and 3.3 V
  • Integrated Bootstrap Diode
  • 20-Pin 3.5 mm × 4.5 mm VQFN (RGY) package
  • Create a Custom Design with WEBENCH Tools

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60  V and is optimized for high-power density, high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (UVLO), programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control.

TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the primary and other downstream controllers acting as secondaries synchronized to the primary in-phase or 180° out-of-phase. Secondary controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

New products (LM5145 and LM5146) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60  V and is optimized for high-power density, high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (UVLO), programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control.

TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the primary and other downstream controllers acting as secondaries synchronized to the primary in-phase or 180° out-of-phase. Secondary controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

New products (LM5145 and LM5146) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.

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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 TPS40170 4.5-V to 60-V, Wide-Input Synchronous PWM Buck Controller datasheet (Rev. C) PDF | HTML 2023/11/3
類比設計期刊 Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 2023/8/29
類比設計期刊 Implementation of micro-processor controlled wide-input-voltage, smart battery 2019/9/1
應用說明 Wide-Vin Battery-Charger Using SMBus MSP430 MCUs and bq Fuel Gauges (Rev. B) PDF | HTML 2019/7/12
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
白皮書 An overview of radiated EMI specifications for power supplies 2018/6/5
白皮書 An overview of conducted EMI specifications for power supplies 2018/2/1
Application brief Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout 2017/11/13
技術文章 Optimizing layout for synchronous buck converters PDF | HTML 2016/11/25
類比設計期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016/7/21
技術文章 Power Tips: Simple PSRR measurement with a frequency analyzer PDF | HTML 2016/5/25
技術文章 GaN to the rescue! Part 2: Measurements PDF | HTML 2016/1/7
技術文章 GaN to the rescue! Part 1: Body-diode reverse recovery PDF | HTML 2015/10/28
白皮書 Choosing the Right Fixed Frequency Buck Regulator Control Strategy 2015/10/2
白皮書 Choosing the Right Fixed Frequency Buck Regulator Control Strategy (PPT) 2015/10/2
應用說明 Creating a Dual USB Universal Car Charger From the TPS40170 and Two TPS2511 2012/5/22

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

TPS40170EVM-578 — 用於 TPS40170 同步 PWM 降壓控制器的評估模組

The TPS40170EVM-578 evaluation module is a fully assembled and tested circuit for evaluating the TPS40170 Wide Input Synchronous PWM Buck Controller. The TPS40170EVM-578 converts a 10V to 60V input to a 5V output at 6A. The minimum input voltage can be lowered to 6V with a simple UVLO resistor (...)
使用指南: PDF
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開發板

TPS40170EVM-597 — 具備 NexFET™ 的 TPS40170 同步 PWM 降壓控制器評估模組

TPS40170EVM-597 是一個已完成組裝並經過測試的電路，用於評估具備兩個 NexFET 裝置 CSD18537NQ5A 與 CSD18563Q5A 的 TPS40170 同步降壓控制器。TPS40170EVM-597 在 10V 至 36V 輸入（24V 標稱值）下運作，並提供高達 10A 的 5V 輸出。

使用指南: PDF
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模擬型號

TPS40170 IBIS Model

SLPM333.ZIP (37 KB) - IBIS 模型
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模擬型號

TPS40170 PSpice Average Model (Rev. A)

SLUM208A.ZIP (152 KB) - PSpice 模型
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模擬型號

TPS40170 PSpice Unencrypted Transient Model (Rev. C)

SLUM141C.ZIP (90 KB) - PSpice 模型
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模擬型號

TPS40170 TINA-TI Average Reference Design

SLUM236.TSC (80 KB) - TINA-TI 參考設計
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模擬型號

TPS40170 TINA-TI Average Spice Model

SLUM237.ZIP (6 KB) - TINA-TI Spice 模型
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模擬型號

TPS40170 TINA-TI Transient Reference Design

SLUM184.TSC (883 KB) - TINA-TI 參考設計
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模擬型號

TPS40170 TINA-TI Transient Spice Model

SLUM185.ZIP (76 KB) - TINA-TI Spice 模型
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計算工具

SLUC263 — Type III Compensation Calculation Tool

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參考設計

PMP10799 — 24V 輸入轉 12V@8A 同步降壓轉換器參考設計

此同步降壓轉換器的輸入電壓範圍為 19V 至 32V，能夠穩定輸出 12V、連續電流 8A。在 24V 輸入電壓下，於 4.5A 至 8A 電流範圍內可達成高於 97% 的效率。其他特點包括低輸出漣波電壓、優異的暫態響應，以及小巧的尺寸。
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參考設計

PMP11494 — 48V 輸入轉 24V@12A (15A 峰值電流) 同步降壓轉換器參考設計

此同步降壓轉換器可在 45V 至 51V 的輸入電壓範圍內運作，並能在 12 A 時持續提供 24V 的輸出（峰值 15A，時間 1 秒）。此轉換器效率非常高，可在 5.5A-15A 之間實現高於 98% 的效率。高效率有助於減少元件溫度上升，進而延長運作壽命。低輸出與輸入漣波電壓可降低傳導雜訊。
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參考設計

PMP15025 — 適用於工業機器人和馬達驅動器的 24V 轉 5V@4A 輸出參考設計

PMP15025 包含單相同步降壓轉換器，可從 24V 輸入提供穩定的 5V/4A 解決方案。此設計具備高效率與高功率密度，適用於機器人與馬達驅動等工業自動化應用。
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PMP9668 — 通用 uP 控制電池充電器 24Vin、最大 10 Aout、5/12V 2A 和 5V 4A、2 個 USB 連接埠參考設計

BQ24745 是主機控制同步降壓電池充電器，一般可在高達 19.2V 和 8A 的情況下為電池充電，使用 8mOhm 電池感測電阻器時，可延伸至 10A。動力系統僅能提供 8A（僅對流冷卻），中等風扇冷卻（約 200LFM）則能提供 10A。測試報告包含這兩種情況的熱影像。雖然此設計顯示 28 針腳 MSP430 作為主機，但任何具有 SMBus 功能的處理器都會運作。本設計提供使用 TPS54335 的 5/12V 2A 輔助轉換器，以及使用 TPS40170（帶 2 個 CSD18504）時，可提供 5V 4A。對於兩個 USB 連接埠，此設計提供 TPS2561A 用於電源切換，以及 (...)

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VQFN (RGY) 20 Ultra Librarian
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