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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LMR36520

現行

具有 26-uA IQ 的 SIMPLE SWITCHER® 4.2-V 至 65-V、2-A 同步降壓轉換器

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產品規格表

LMR36520

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 125 Topology Buck, Flybuck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 65 Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 460 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 62 Iq (typ) (A) 0.000026
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck, Flybuck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.2 Vin (max) (V) 65 Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 460 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, UVLO Fixed Control mode current mode Vout (min) (V) 1 Vout (max) (V) 62 Iq (typ) (A) 0.000026
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Designed for reliable and rugged applications
    • Input transient protection up to 70 V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • Internal compensation helps reduce solution size, cost and design complexity
    • 400-kHz frequency
  • Wide conversion range
    • Input voltage range: 4.2 V to 65 V
    • Output voltage range: 1 V to 95% of VIN
  • Low-power dissipation across load spectrum
    • 90% efficiency: 24 VIN, 5 VOUT, 1 A at 400 kHz
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26 µA
  • Power-good output with filter and delayed release
  • Designed for reliable and rugged applications
    • Input transient protection up to 70 V
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • Internal compensation helps reduce solution size, cost and design complexity
    • 400-kHz frequency
  • Wide conversion range
    • Input voltage range: 4.2 V to 65 V
    • Output voltage range: 1 V to 95% of VIN
  • Low-power dissipation across load spectrum
    • 90% efficiency: 24 VIN, 5 VOUT, 1 A at 400 kHz
    • Increased light-load efficiency in PFM mode
    • Low operating quiescent current of 26 µA
  • Power-good output with filter and delayed release

The LMR36520 regulator is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER converter. With integrated high-side and low-side power MOSFETs, output current up to 2 A is delivered over a wide input voltage range of 4.2 V to 65 V. The transient tolerance that goes up to 70 V reduces the solution size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36520 uses peak-current mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR36520 is pin-to-pin compatible with the LMR36510 (65 V, 1 A) and LMR33610, LMR33620, LMR33630 and LMR33640 (36 V, 1 A/2 A/3 A/4 A), completing the latest family of SIMPLE SWITCHER converters. This increases the ease of use and scalability of wide Vin converters across various commonly used voltage and current ratings without having the need to redesign the board layout. As a result, the overall cost, design effort and time to market are optimized.

The LMR36520 is in an 8-pin HSOIC package.

The LMR36520 regulator is an easy-to-use, synchronous, step-down DC/DC SIMPLE SWITCHER converter. With integrated high-side and low-side power MOSFETs, output current up to 2 A is delivered over a wide input voltage range of 4.2 V to 65 V. The transient tolerance that goes up to 70 V reduces the solution size and cost to protect against overvoltages and meets the surge immunity requirements of IEC 61000-4-5.

The LMR36520 uses peak-current mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the requirement for an external supervisor.

Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR36520 is pin-to-pin compatible with the LMR36510 (65 V, 1 A) and LMR33610, LMR33620, LMR33630 and LMR33640 (36 V, 1 A/2 A/3 A/4 A), completing the latest family of SIMPLE SWITCHER converters. This increases the ease of use and scalability of wide Vin converters across various commonly used voltage and current ratings without having the need to redesign the board layout. As a result, the overall cost, design effort and time to market are optimized.

The LMR36520 is in an 8-pin HSOIC package.

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類型 標題 日期
* Data sheet LMR36520 4.2-V to 60-V, 2-A Ultra-small Synchronous Step-down Converter datasheet (Rev. B) 2020年 4月 9日
Design guide High-Efficiency 24-VAC to 5-V, 3.3-V Ref Design With Battery Backup and Charging PDF | HTML 2023年 6月 30日
Application note Designing an Isolated Buck (Fly-BuckTM) Converter using the LMR36520 (Rev. A) PDF | HTML 2022年 7月 19日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Certificate LMR36520AEVM EU Declaration of Conformity (DoC) 2020年 5月 6日
Technical article 3 tips when designing a power stage for servo and AC drives PDF | HTML 2019年 11月 20日
EVM User's guide LMR36520AEVM User’s Guide 2019年 6月 24日
Technical article How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016年 6月 13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

LMR36520AEVM — 具 26-uA IQ 評估模組的 SIMPLE SWITCHER® 4.2-V 至 65-V、2-A 同步降壓轉換器

The LMR36520AEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR36520 synchronous step-down converter.

使用指南: PDF
TI.com 無法提供
模擬型號

LMR36520A PSpice Unencrypted Transient Model (Rev. A)

SNVMBX7A.ZIP (185 KB) - PSpice Model
下載
模擬型號

LMR36520FA PSpice Unencrypted Transient Model (Rev. A)

SNVMBX8A.ZIP (188 KB) - PSpice Model
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參考設計

TIDA-010932 — 具有電池備援的 24-VAC 功率級參考設計

此參考設計專門針對使用 24 VAC 電源的智慧空調與其它閘道建築自動化終端設備，提供高效率的功率級解決方案。此功率級採用 24-VAC 輸入，並產生 5 V 與 3.3 V 輸出軌，可在新增時為額外的負載點轉換器供電。此設計提供 LiPo 電池充電，並在供電不足時無縫切換至電池電源。BoosterPack 外型尺寸允許設計人員利用其它 launchpad 評估此電源架構，並且包含 LED 驅動器和電流感測功能。
Design guide: PDF
參考設計

PMP22822 — 2.2-W 多輸出返馳參考設計

此參考設計為適用隔離式閘極驅動偏壓電源的 2.2-W 多輸出返馳解決方案。電源設計可接受來自 24-V 系統的輸入。此設計使用 LM36520 同步降壓轉換器來產生四個隔離輸出。一次側穩壓可將四個 17-V 輸出維持在 +/-10% 範圍內。
Test report: PDF
參考設計

TIDA-010052 — 適用於馬達驅動的安全電源供應參考設計

This reference design implements a safe-power supply for powering up microcontrollers in an architecture featuring two MCUs. The design has several protection features including overvoltage protection and short circuit protection to prevent the MCUs from getting damaged. The DC/DCs, LMR36515 and (...)
Design guide: PDF
電路圖: PDF
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