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TPSM863257

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3-V to 17-V input voltage, 3-A forced-CCM synchronous buck module

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Data sheet

TPSM863257

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Synchronous Buck Type Module Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 17 Vout (min) (V) 0.6 Vout (max) (V) 6 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Overcurrent protection, Power good Control mode D-CAP3 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Synchronous Buck Type Module Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 17 Vout (min) (V) 0.6 Vout (max) (V) 6 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Overcurrent protection, Power good Control mode D-CAP3 Duty cycle (max) (%) 95
QFN-FCMOD (RDX) 7 13.2 mm² 4 x 3.3
  • Configured for a wide range of applications
    • 3V to 17V input voltage range
    • 0.6V to 10V output voltage range for TPSM863252
    • 0.6V to 5.5V output voltage range for TPSM863257
    • Fixed 3.3V output voltage for TPSM863253
    • 0.6V reference voltage
    • ±1% reference accuracy at 25°C
    • ±1.5% reference accuracy at –40°C to 125°C
    • Integrated 55mΩ and 24mΩ MOSFETs
    • 100µA low quiescent current
    • 1.2MHz switching frequency
    • Maximum 95% large duty cycle operation
    • Precision EN threshold voltage
    • 1.6ms fixed typical soft-start time
  • Ease of use and small design size
    • TPSM863252 Eco-mode, TPSM863257 and TPSM863253 FCCM mode at light loading
    • Fast transient D-CAP3™ control mode
    • Easy layout with integrated bootstrap capacitor and inductor
    • Support start-up with prebiased output voltage
    • Non-latch for OV, OT, and UVLO protection
    • Cycle-by-cycle OC and NOC protection
    • –40°C to 125°C operating junction temperature
    • 3.3mm × 4mm × 2mm QFN package
  • Create a custom design using the TPSM863252 with the WEBENCH Power Designer
  • Create a custom design using the TPSM863253 with the WEBENCH® Power Designer
  • Create a custom design using the TPSM863257 with the WEBENCH® Power Designer
  • Configured for a wide range of applications
    • 3V to 17V input voltage range
    • 0.6V to 10V output voltage range for TPSM863252
    • 0.6V to 5.5V output voltage range for TPSM863257
    • Fixed 3.3V output voltage for TPSM863253
    • 0.6V reference voltage
    • ±1% reference accuracy at 25°C
    • ±1.5% reference accuracy at –40°C to 125°C
    • Integrated 55mΩ and 24mΩ MOSFETs
    • 100µA low quiescent current
    • 1.2MHz switching frequency
    • Maximum 95% large duty cycle operation
    • Precision EN threshold voltage
    • 1.6ms fixed typical soft-start time
  • Ease of use and small design size
    • TPSM863252 Eco-mode, TPSM863257 and TPSM863253 FCCM mode at light loading
    • Fast transient D-CAP3™ control mode
    • Easy layout with integrated bootstrap capacitor and inductor
    • Support start-up with prebiased output voltage
    • Non-latch for OV, OT, and UVLO protection
    • Cycle-by-cycle OC and NOC protection
    • –40°C to 125°C operating junction temperature
    • 3.3mm × 4mm × 2mm QFN package
  • Create a custom design using the TPSM863252 with the WEBENCH Power Designer
  • Create a custom design using the TPSM863253 with the WEBENCH® Power Designer
  • Create a custom design using the TPSM863257 with the WEBENCH® Power Designer

The TPSM86325x is a simple, easy-to-use, high-efficiency, high-power density, synchronous buck module with input voltage ranging from 3V to 17V and supports up to 3A continuous current.

The TPSM86325x employs D-CAP3 control mode to provide a fast transient response and to support low-ESR output capacitors with no requirement for external compensation. The device can support up to 95% duty cycle operation.

The TPSM863252 operates in Eco-mode, which maintains high efficiency during light loading. The TPSM863257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. TPSM863253 is a fixed 3.3V output voltage part with FCCM mode. TPS863253 integrated divider resistors and a feedforward cap in internal module. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup.

The device is available in a QFN package. The junction temperature is specified from –40°C to 125°C.

The TPSM86325x is a simple, easy-to-use, high-efficiency, high-power density, synchronous buck module with input voltage ranging from 3V to 17V and supports up to 3A continuous current.

The TPSM86325x employs D-CAP3 control mode to provide a fast transient response and to support low-ESR output capacitors with no requirement for external compensation. The device can support up to 95% duty cycle operation.

The TPSM863252 operates in Eco-mode, which maintains high efficiency during light loading. The TPSM863257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. TPSM863253 is a fixed 3.3V output voltage part with FCCM mode. TPS863253 integrated divider resistors and a feedforward cap in internal module. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup.

The device is available in a QFN package. The junction temperature is specified from –40°C to 125°C.
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Technical documentation

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Type Title Date
* Data sheet TPSM86325x 3V to 17V Input, 3A, Synchronous Buck Module in QFN Package datasheet (Rev. C) PDF | HTML 10 Jan 2024
Application brief Solving power design challenges in oscilloscope applications PDF | HTML 31 Oct 2023
EVM User's guide TPSM863252, TPSM86325 and TPSM863257 Step-Down Converter Module EVM User's Guide (Rev. B) PDF | HTML 22 Sep 2023
Certificate TPSM863257 EU RoHS Declaration of Conformity (DoC) 02 Apr 2023

Design & development

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

Evaluation board

TPSM863257EVM — TPSM863257 evaluation module for 3-V to 17-V input voltage, 3-A forced-CCM synchronous buck module

TPSM863257 evaluation module (EVM) is a simple, easy-to-use, 3-A synchronous step-down buck module. TPSM863257EVM is a fully assembled and tested circuit for evaluating the TPSM863257 step-down buck module. The EVM operates from 3 V to 17 V input (12 V nominal) and provides a 1.05 V output at 3 A. (...)

User guide: PDF | HTML
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Simulation model

TPSM863257 PSPICE Model

SLUM865.ZIP (349 KB) - PSpice Model
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QFN-FCMOD (RDX) 7 Ultra Librarian
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