Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)
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AC/DC- und DC/DC-Wandler (integrierter FET)

TPS5450

AKTIV

Synchroner Abwärtswandler SWIFT™, 5,5 bis 36 V Eingang, 5 A, 500 kHz

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LMR51450 AKTIV Synchroner 5-A-Abwärtswandler, 36 V Easy to use 36V 5A converter

TPS5450

AKTIV
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Produktdetails

Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 5.5 Vout (max) (V) 31 Vout (min) (V) 1.22 Features Enable, Over Current Protection Control mode Voltage mode Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 3000 Duty cycle (max) (%) 89 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 5.5 Vout (max) (V) 31 Vout (min) (V) 1.22 Features Enable, Over Current Protection Control mode Voltage mode Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 3000 Duty cycle (max) (%) 89 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Wide input voltage range: 5.5 V to 36 V
  • Up to 5-A continuous (6-A peak) output current
  • High efficiency greater than 90% enabled by 110-mΩ integrated MOSFET switch
  • Wide output voltage range: adjustable down to 1.22 V with 1.5% initial accuracy
  • Internal compensation minimizes external part count
  • Fixed 500-kHz switching frequency for small filter size
  • 18-µA shutdown supply current
  • Improved line regulation and transient response by input voltage feedforward
  • System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
  • –40°C to 125°C operating junction temperature range
  • Available in small thermally enhanced 8-pin SOIC PowerPAD™ package
  • Wide input voltage range: 5.5 V to 36 V
  • Up to 5-A continuous (6-A peak) output current
  • High efficiency greater than 90% enabled by 110-mΩ integrated MOSFET switch
  • Wide output voltage range: adjustable down to 1.22 V with 1.5% initial accuracy
  • Internal compensation minimizes external part count
  • Fixed 500-kHz switching frequency for small filter size
  • 18-µA shutdown supply current
  • Improved line regulation and transient response by input voltage feedforward
  • System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
  • –40°C to 125°C operating junction temperature range
  • Available in small thermally enhanced 8-pin SOIC PowerPAD™ package

The TPS5450 is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

The TPS5450 device is available in a thermally-enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

The TPS5450 is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

The TPS5450 device is available in a thermally-enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.
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* Data sheet TPS5450 5-A, Wide Input Range, Step-Down Converter datasheet (Rev. E) PDF | HTML 15 Jul 2022

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