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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 15 Iout (Max) (A) 5 Iq (Typ) (uA) 11.5 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 2300 Features Enable, UVLO Adjustable, Soft Start Fixed Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 3 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Buck converters (integrated switch)

Features

  • Operating Input Voltage Range 4.5 V to 17 V
  • Feedback Reference Voltage 0.6 V ±1.33%
  • Continuous Output Current 5 A/3 A/2 A
  • Adjustable Clock Frequency from 250 kHz to
    2.3 MHz
  • External Synchronization Oscillator
  • 120° Out of Phase for Buck1, Buck2, Buck3
  • Dedicated Enable Pins for Each Buck
  • Fixed SS Time for Each Buck (2.4 ms)
  • Automatic Power-Up/Power-Down Sequence and Adjustable Interval Time Between Bucks (6 Combinations)
  • Support Pulse Skipping Mode (PSM) and Forced Continuous Current Mode (FCCM)
  • Output Voltage Power Good Indicator and Adjustable Delay Time
  • Thermal Overloading Protection
  • 32-Pin QFN (RHB) 5-mm × 5-mm Package
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Description

The TPS65265 incorporates triple synchronous buck converters with 4.5-V to 17-V wide input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters can be adjustable from 250 kHz to 2.3 MHz with an external resistor or external clock. 120° out-of-phase operation between Buck1, Buck2, and Buck3 minimizes the input filter requirements.

The TPS65265 operates in pulse skipping mode (PSM) with driving MODE pin to high or leaving float and operates in force continuous current mode (FCC) with connecting MODE pin to GND. PSM mode provides high efficiency by reducing switching losses at light load and FCC mode reduces noise susceptibility and RF interference.

The TPS65265 is available in a 32-pin thermal enhanced QFN (RHB) 5-mm × 5-mm thin package.

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Technical documentation

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Type Title Date
* Data sheet TPS65265 4.5-V to 17-V Input Voltage, 5-A/3-A/2-A Output Current Triple Synchronous Step-Down Converter datasheet (Rev. A) Dec. 08, 2015
Application note Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) Apr. 01, 2019
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide TPS65265EVM-705 Evaluation Module User's Guide Dec. 04, 2015
Application note TPS65250/1/2/3 LAYOUT GUIDE Jan. 15, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description

The TPS65265EVM-705 evaluation module facilitates evaluation of the TPS65265. The TPS65265 PMIC is a triple 5A/3A/2A output current, synchronous step-down (buck) converter with an operational range of 4.5 to 17V. The feedback voltage reference for each buck is 0.6V. Each buck is independent with (...)

Features
  • Supports 5 V, 12 V and 15 V power bus
  • Adjustable Clock Frequency from 250KHz to 2.3MHz
  • External Synchronization Oscillator
  • 120° out of phase for buck1, buck2, buck3
  • Support Pulse Skipping Mode(PSM) and  Force Continuous Current Mode (FCCM)

Design tools & simulation

SIMULATION MODEL Download
SLVMBE7A.ZIP (108 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
4.5V to 14V input Triple-Rail Output POL Reference Design
PMP40041 — The PMP40041 is a reference design which uses the TPS56265 to generate three output rails. The input voltage range is 4.5V to 14V. The TPS65265 incorporates a triple synchronous buck converter with continuous output current 5A/3A/2A . The PMP40041 has dedicated headers to switch the output voltage (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

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  • Ongoing reliability monitoring

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