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TPS542021

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Convertidor buck sincrónico de 500 kHz, 2 A y entrada de 4.5 V a 30 V

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TPS542021

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Detalles del producto

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 Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000045 Duty cycle (max) (%) 100
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 Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000045 Duty cycle (max) (%) 100
SOT-5X3 (DRL) 6 2.56 mm² (1.6 mm × 1.6 mm) SOT-23-THN (DDC) 6 8.12 mm² (2.9 mm × 2.8 mm)
  • 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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS54202x 4.5V to 30V, 2A, EMI Friendly, Synchronous Step-Down Converter datasheet (Rev. B) PDF | HTML 16/12/2025
Certificado TPS542021EVM EU Declaration of Conformity (DoC) 16/12/2024

Diseño y desarrollo

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Placa de evaluación

TPS542021EVM — Módulo de evaluación TPS542021

El módulo de evaluación (EVM) TPS542021 es un convertidor reductor sincrónico de 2 A sencillo y fácil de usar en un pauqete SOT236. El TPS542021EVM es un circuito completamente ensamblado y probado para evaluar el convertidor reductor TPS542021. El TPS542021EVM funciona con una entrada de 5 V a (...)

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