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Introduction, characteristics, and applications of Texas Instruments TPS61377 synchronous boost converter

2/19/2024 9:00:00 AM

Abstract: High voltage boost converter with programmable peak current limit in HotRod Lite VQFN package.

TPS61377 Texas Instruments

The Texas Instruments TPS61377 synchronous boost converter is a high voltage boost converter with programmable peak current limit. These converters feature 50 milliohm low-side power switches and 40 milliohm high-side rectification switches to provide high efficiency and small size solutions. The TPS61377 boost converter operates over a wide input voltage range of 2.9V to 23V, with output voltage coverage up to 25V and a 6A switching current capability. These converters use an adaptive constant non-time peak current control topology to regulate the output voltage. The TPS61377 boost converter operates in pulse-width modulation (PWM) mode under moderate to heavy load conditions. These converters include two operating modes, selectable via the MODE pin at light loads. The two operating modes are pulse frequency modulation (PFM) mode to improve light load efficiency and forced PWM mode to avoid audible noise and low switching frequency. The TPS61377 converter also features soft-start, programmable peak switching current limit, output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown protection. These synchronous boost converters offer a very small solution size with a 2.5mm x 2mm HotRod Lite VQFN package. Typical applications include 3.3V(IN), 5V(IN) to 12V(OUT), 24V(OUT) power conversion, industrial power systems and appliances.


characteristic

  • Wide input voltage and output voltage range:

    • Input voltage range is 2.9V to 23V

    • 4.5V to 25V output voltage range

  • 1.5A to 6A programmable peak current limit

  • On-off level:

    • 650 kHz TPS61377

    • 1.2MHz TPS613771

  • High efficiency and high power:

    • 6A peak switch current limit

    • Low-side FET: 50 milliohms, high-side FET: 40 milliohms

    • Efficiency up to 95.3% at V(IN) = 9V, V(OUT) = 16V, I(OUT) = 2A

    • Efficiency up to 96.0% at V(IN) = 12V, V(OUT) = 24V, I(OUT) = 1.5A

  • Extend system uptime:

    • Typical 70µA Quiescent Current

    • 1.25µA maximum shutdown current

    • Selectable automatic PFM and forced PWM modes

  • Safe and reliable operating features:

    • Output overvoltage protection

    • Cycle-by-cycle overcurrent protection

    • Thermal shutdown

  • Precise EN/UVLO thresholds

  • Outer loop compensation

  • 2.5mm x 2mm HotRod Lite VQFN package


app

  • 3.3V(IN), 5V(IN) to 12V(OUT), 24V(OUT) power conversion

  • Industrial power systems

  • Electrical appliances


Typical application diagram



Functional block diagram


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