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Introduction, characteristics, and applications of Texas Instruments TPSM365R1x synchronous buck converter

2/27/2024 9:35:00 AM

Summary: 3V to 65V wide VIN, up to 150mA rated IO power module optimizes light load efficiency.

Texas Instruments TPSM365R1x synchronous buck converter

The Texas Instruments TPSM365R1x synchronous buck converters are 65V, 100mA and 150mA step-down DC/DC power modules with an ultra-low operating IQ of 4μA at no load (24V(IN) to 3.3V(OUT)). These converters combine power MOSFETs, integrated inductors and boot capacitors in a compact, easy-to-use 3.5mm × 4.5mm × 2mm 11-pin QFN package. Proprietary small HotRod QFN packaging technology improves thermal performance and enables low EMI. The TPSM365R1x buck converters support fixed 3.3V and 5V outputs, as well as adjustable output voltages from 1V to 16V. The TPSM365R1x synchronous step-down DC/DC module adopts a peak current mode control architecture with internal compensation to ensure stable operation with minimal output capacitance. Typical applications include appliances, factory automation and building automation.


characteristic

  • Universal synchronous step-down DC/DC module:

    • Integrated mosfet, inductor and controller

    • 3V to 65V wide input voltage range

    • Up to 70V input transient

    • Junction temperature range -40℃~125℃

    • 4.5mm × 3.5mm × 2mm duplicate mold packaging

    • Frequency adjustable from 200kHz to 2.2MHz using RT pin

  • Designed for scalable industrial power supplies:

    • Pin-compatible families include TPSM365R3 (65V, 300mA), TPSM365R6 (65V, 600mA), TLVM23615 (36V, 1.5 A) and TLVM23625 (36V, 2.5A)

  • Optimized for ultra-low EMI requirements:

    • Pseudo-random spread spectrum reduces peak emissions

    • Pin-selectable FPWM mode constant frequency at light load with mode/SYNC pin

    • Frequency synchronization and MODE/SYNC pin

    • Possess CISPR11 Class B capability

  • Inherent protective features, rugged design:

    • Precision input and open-drain PGOOD indicators for control, sequencing and V(IN) UVLO

    • Overcurrent and thermal shutdown protection


app

  • factory automation

  • Building automation

  • Electrical appliances

  • Scalable industrial power supply


Simplified schematic



block diagram


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