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DC/DC 轉換器

LM61460

現行

3-V 至 36-V、6-A、低 EMI 同步降壓轉換器

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產品規格表

LM61460

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000009 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Catalog Topology Buck Iout (max) (A) 6 Vin (max) (V) 36 Vin (min) (V) 3 Vout (max) (V) 34 Vout (min) (V) 1 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Adjustable, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000009 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
VQFN-HR (RJR) 14 14 mm² (4 mm × 3.5 mm)
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • Hotrod™ package and parallel input path minimize switch node ringing
    • Adjustable SW node rise time
  • Designed for reliable and rugged applications
    • Supports 42-V transients
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-citcuit protection
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (typical)
    • External bias option for improved efficiency
  • Suitable for scalable power supplies
    • Pin compatible with:
  • Use TPSM63606 module for faster time to market
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • Hotrod™ package and parallel input path minimize switch node ringing
    • Adjustable SW node rise time
  • Designed for reliable and rugged applications
    • Supports 42-V transients
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.4-V dropout with 4-A load (typical)
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-citcuit protection
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1-mA, 13.5 VIN, 5 VOUT
    • Low MOSFET ON resistance
      • RDS_ON_HS = 41 mΩ (typical)
      • RDS_ON_LS = 21 mΩ (typical)
    • External bias option for improved efficiency
  • Suitable for scalable power supplies
    • Pin compatible with:
  • Use TPSM63606 module for faster time to market

The LM61460 is a high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460 is specifically designed for minimal EMI. The device incorporates adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.

The LM61460 is a high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460 is specifically designed for minimal EMI. The device incorporates adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

Electrical characteristics are specified over a junction temperature range of –40°C to +150°C. Find additional resources in the Related Documentation.
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TPSM63606 現行 採用 5-mm x 5.5-mm 強化型 HotRod™ QFN 封裝的高密度、36-V 輸入、1-V 至 16-V 輸出、6-A 電源模組 Save board space, simplify design, and speed up time to market with an integrated-inductor power module.

技術文件

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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 LM61460 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. D) PDF | HTML 2022/7/28
應用說明 How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 2023/8/16
應用說明 Using the LM61460-Q1 and LM61495-Q1 in USB Type-C Applications PDF | HTML 2021/12/15
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
功能安全資訊 LM61x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2020/10/8
技術文章 Keeping the brain cool: how to use high-power DC/DCs in single-board computer desi PDF | HTML 2020/2/28

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

LM61460EVM — 36-V、低 EMI 6-A、5-V 同步、400-kHz、降壓轉換器評估模組

LM61460 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 LM61460 同步降壓轉換器。  LM61460 在小型解決方案尺寸中提供卓越的效率、低 IQ 和低 EMI。
使用指南: PDF | HTML
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Third-party accessory

VANTRON-3P-AM6411 — Vantron Technology G405 2ETH 2COM 邊緣運算閘道

G405 industrial edge computing gateway is an Arm®-based high-performance solution built for industrial applications. The gateway features dual-SIM 4G connectivity, Wi-Fi, Bluetooth, and five Ethernet jacks, while supporting a virtual private network (VPN) to address diversified networking (...)

從：Vantron Technology, Inc.
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模擬型號

LM61460AAN-Q1 PSpice Transient Model (Rev. A)

SNVMBW2A.ZIP (99 KB) - PSpice 模型
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計算工具

SNVR479 — LM61460 Design Tool

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參考設計

PMP22416 — USB Type-C™ 雙降壓參考設計

此參考設計為具 65-W 輸出功率與 98.8% 效率的 USB Type-C® 雙輸出降壓裝置。此設計使用兩個 LM61460 降壓轉換器將 21-V 輸入降壓，包含 5-V 偏壓電壓輸入，以將效率最大化。USB Type-C 設計提供 5 V、9 V、15 V、20 V 的雙輸出電壓，並使用 PMP22426 子卡進行測試。PMP22426 使用 USB Type-C 電力輸送控制器 TPS25740B，分別控制每個輸出。 
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-HR (RJR) 14 Ultra Librarian
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