2.75-V to 6-V, 3-A step-down module with adjustable-frequency and tracking in 3-mm x 4-mm uSIL


Product details


Iout (Max) (A) 3 Vin (Min) (V) 2.75 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Light Load Efficiency, Output Discharge, Power Good, Spread Spectrum, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (mA) 0.015 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 4000 Switching frequency (Min) (kHz) 1800 Switching frequency (Typ) (kHz) 2250 Duty cycle (Max) (%) 100 Type Module open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

uSiP (SIL) 14 - open-in-new Find other Buck modules (integrated inductor)


  • Input voltage range: 2.75 V to 6 V
  • 3-A and 4-A versions
  • Quiescent current 15-µA typical
  • Output voltage from 0.6 V to 5.5 V
  • Output voltage accuracy ±1% (PWM operation)
  • Adjustable soft-start
  • Forced PWM or PWM/PFM operation
  • Adjustable switching frequency of
    1.8 MHz to 4 MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Power good output with window comparator

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TPSM8281x is a family of pin-to-pin 3-A and 4-A high efficiency and easy to use synchronous step-down DC/DC converters. They are based on a peak current mode control topology. They are designed for Telecommunication, Test and Measurement and Medical applications with high power density and ease of use requirements. Low resistive switches allow up to 4-A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, TPSM8281x automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. TPSM8281x provides a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to an external source. This allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPSM8281x is available as an adjustable version, packaged in a 3-mm x 4-mm µSil module with integrated inductor.

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Request samples

Preproduction samples are available (XPSM82813SILT). Request now

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The TPSM82810EVM-089 evaluation module (EVM) is designed to help the user easily evaluate and test the operation and functionality of the TPSM82810 power module. The EVM converts a 2.75-V to 6-V input voltage to a 1.8-V regulated output voltage at up to 4 A of output current. The TPSM82810 includes (...)
  • 86 mm² total solution size
  • VIN = 2.75 V to 6 V
  • VOUT = 1.8 V (adjustable)
  • 4-A output current

Design tools & simulation

SLUM700.ZIP (99 KB) - PSpice Model
SLVC780.ZIP (138 KB)

CAD/CAE symbols

Package Pins Download
uSiP (SIL) 14 View options

Ordering & quality

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Choosing Between a DC/DC Power Module and a Discrete Switching Regulator

When should I select a power module instead of a converter as my step-down DC/DC power supply? Learn the pros and cons of each approach in this brief video.

Posted: 29-Jan-2016
Duration: 06:26

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