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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54540B

現行

具有 Eco-Mode™ 的 4.5V 至 42V 輸入、5A 降壓轉換器

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產品規格表

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TPS54540B

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 150 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 41.1 Iq (typ) (µA) 146 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 41.1 Iq (typ) (µA) 146 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • High efficiency at light loads with pulse skipping Eco-mode™
  • 92-mΩ high-side MOSFET
  • 146-µA operating quiescent current and
    2-µA shutdown current
  • 100-kHz to 2.5-MHz Fixed switching frequency
  • Synchronizes to external clock
  • Low dropout at light loads with integrated BOOT recharge FET
  • Adjustable UVLO and hysteresis
  • 0.8 V 1% Internal voltage reference
  • 8-Pin HSOIC with PowerPAD™ package
  • –40°C to 150°C TJ operating range
  • Create a custom design using the TPS54540B with the WEBENCH® Power Designer
  • High efficiency at light loads with pulse skipping Eco-mode™
  • 92-mΩ high-side MOSFET
  • 146-µA operating quiescent current and
    2-µA shutdown current
  • 100-kHz to 2.5-MHz Fixed switching frequency
  • Synchronizes to external clock
  • Low dropout at light loads with integrated BOOT recharge FET
  • Adjustable UVLO and hysteresis
  • 0.8 V 1% Internal voltage reference
  • 8-Pin HSOIC with PowerPAD™ package
  • –40°C to 150°C TJ operating range
  • Create a custom design using the TPS54540B with the WEBENCH® Power Designer

The TPS54540B is a 42-V, 5-A step-down regulator with an integrated high side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

The TPS54540B is a 42-V, 5-A step-down regulator with an integrated high side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

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LMR51440 現行 36-V、4-A 同步降壓轉換器 Newer device with smaller solution size and improved power density

技術文件

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類型 標題 日期
* Data sheet TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet PDF | HTML 2019年 1月 24日
Application note NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B 2019年 4月 5日

設計與開發

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模擬型號

TPS54540 Unencrypted PSpice Average Model

SLVMCT9.ZIP (1 KB) - PSpice Model
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模擬型號

TPS54540 Unencrypted PSpice Average Model Package (Rev. A)

SLVMA28A.ZIP (205 KB) - PSpice Model
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模擬型號

TPS54540 Unencrypted PSpice Transient Model

SLVMCT8.ZIP (6 KB) - PSpice Model
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模擬型號

TPS54540 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM871A.ZIP (125 KB) - PSpice Model
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