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AC/DC & DC/DC converters (integrated 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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TPS54540B

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Buck Type Converter 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 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000146
Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 42 Topology Buck Type Converter 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 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000146
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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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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