Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)
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TPS542021

VORSCHAU

Synchroner Abwärtswandler, 4,5 V bis 30 V Eingang, 2 A, 500 kHz

Produktdetails

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 30 Vout (min) (V) 0.6 Features Enable, Light-load efficiency, Prebias startup, Soft-start fixed, Spread Spectrum, Synchronous rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 45 Duty cycle (max) (%) 100 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 30 Vout (min) (V) 0.6 Features Enable, Light-load efficiency, Prebias startup, Soft-start fixed, Spread Spectrum, Synchronous rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 45 Duty cycle (max) (%) 100 Type Converter
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8 SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • Configured for a wide range of applications
    • Input voltage range: 4.5V to 30V
    • Selectable adjustable output (TPS542021), fixed 5V output (TPS542025)
    • Continuous output current: up to 2A
    • Reference voltage: 0.6V ± 1.5% (25°C)
    • Supports low drop out mode
  • High efficiency
    • Integrated MOSFETs: 100mΩ and 60mΩ
    • Low 2µA shutdown, 26µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal loop compensation
    • Fixed switching frequency: 500kHz
    • Internal soft start: 5ms
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection for both MOSFETs with hiccup mode protection
    • Non-latched protection for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • P2P, B2B with TPS54202
    • SOT-23 (6), SOT-563 package
  • Configured for a wide range of applications
    • Input voltage range: 4.5V to 30V
    • Selectable adjustable output (TPS542021), fixed 5V output (TPS542025)
    • Continuous output current: up to 2A
    • Reference voltage: 0.6V ± 1.5% (25°C)
    • Supports low drop out mode
  • High efficiency
    • Integrated MOSFETs: 100mΩ and 60mΩ
    • Low 2µA shutdown, 26µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal loop compensation
    • Fixed switching frequency: 500kHz
    • Internal soft start: 5ms
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection for both MOSFETs with hiccup mode protection
    • Non-latched protection for over temperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • P2P, B2B with TPS54202
    • SOT-23 (6), SOT-563 package

The TPS54202x is a 4.5V to 30V input voltage range, 2A output, synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the TPS54202x achieves the high power density and offers a small footprint on the PCB. TPS542025 has fixed 5V output, which saves BOM by further reducing FB resistors. TPS542021 has adjustable output by a different FB resistor configuration.

The TPS54202x operates in pulse frequency modulation for higher light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

The TPS54202x is a 4.5V to 30V input voltage range, 2A output, synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the TPS54202x achieves the high power density and offers a small footprint on the PCB. TPS542025 has fixed 5V output, which saves BOM by further reducing FB resistors. TPS542021 has adjustable output by a different FB resistor configuration.

The TPS54202x operates in pulse frequency modulation for higher light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS54202x 4.5V to 30V, 2A, EMI Friendly, Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 16 Dez 2025
Certificate TPS542021EVM EU Declaration of Conformity (DoC) 16 Dez 2024

Design und Entwicklung

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Evaluierungsplatine

TPS542021EVM — TPS542021 Evaluierungsmodul

Das Evaluierungsmodul (EVM) TPS542021 ist ein einfacher, benutzerfreundlicher synchroner Abwärtswandler mit 2 A im Gehäuse SOT236. Das TPS542021EVM ist eine vollständig montierte und getestete Schaltung zur Evaluierung des Abwärtswandlers TPS542021. Das TPS542021EVM arbeitet mit einer (...)

Benutzerhandbuch: PDF | HTML
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOT-23-THN (DDC) 6 Ultra Librarian
SOT-5X3 (DRL) 6 Ultra Librarian

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