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TPSM86838

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4.5-V to 28-V input, 8-A FCCM mode, synchronous buck module with HotRod QFN package

Product details

Iout (max) (A) 8 Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 150 Iq (typ) (mA) 0.045 Regulated outputs (#) 1 Switching frequency (max) (kHz) 1200 Switching frequency (min) (kHz) 800 Duty cycle (max) (%) 98 Type Module Rating Catalog Control mode D-CAP3
Iout (max) (A) 8 Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 150 Iq (typ) (mA) 0.045 Regulated outputs (#) 1 Switching frequency (max) (kHz) 1200 Switching frequency (min) (kHz) 800 Duty cycle (max) (%) 98 Type Module Rating Catalog Control mode D-CAP3
B3QFN (RCG) 19 27.5 mm² 5.5 x 5
  • 4.5V to 28V input voltage range
  • 0.6V to 5.5V output voltage range
  • 8A continuous output current capability
  • Integrated MOSFETs, inductor, and basic passives
  • 0.6V ±1% reference voltage at 25°C
  • D-CAP3™ control mode for fast transient response
  • FCCM for pseudo-fixed frequency with lower output ripple
  • Adjustable soft-start time by SS capacitor
  • Built-in output discharge function
  • Selectable 800kHz and 1200kHz switching frequency
  • Power-good indicator to monitor output voltage
  • Supports up to 98% duty operation
  • Non-latched protections for UV, OV, OT and UVLO
  • –40°C to +150°C operating junction temperature
  • 19-pin 5.0mm × 5.5mm QFN HotRod™ package
  • 4.5V to 28V input voltage range
  • 0.6V to 5.5V output voltage range
  • 8A continuous output current capability
  • Integrated MOSFETs, inductor, and basic passives
  • 0.6V ±1% reference voltage at 25°C
  • D-CAP3™ control mode for fast transient response
  • FCCM for pseudo-fixed frequency with lower output ripple
  • Adjustable soft-start time by SS capacitor
  • Built-in output discharge function
  • Selectable 800kHz and 1200kHz switching frequency
  • Power-good indicator to monitor output voltage
  • Supports up to 98% duty operation
  • Non-latched protections for UV, OV, OT and UVLO
  • –40°C to +150°C operating junction temperature
  • 19-pin 5.0mm × 5.5mm QFN HotRod™ package

The TPSM86838 is a high-efficiency, high-voltage input, easy-to-use, synchronous buck power module. The device integrates power MOSFETs, a shielded inductor, and basic passives, minimizing the design size.

With the wide operating input voltage range of 4.5V to 28V, this device is an excellent choice for systems powered from 12V, 19V, 24V power-bus rails. TPSM86838 supports up to 8A continuous output current, which output voltage is between 0.6V and 5.5V.

The TPSM86838 uses DCAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPSM86838 operates in forced continuous conduction mode (FCCM) during light load, provides complete non-latched OV (Undervoltage), UV (Undervoltage), OC (Overcurrent), OT (Overtemperature), and UVLO (Undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPSM86838 is available in a 19-pin 5.0mm × 5.5mm HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.

The TPSM86838 is a high-efficiency, high-voltage input, easy-to-use, synchronous buck power module. The device integrates power MOSFETs, a shielded inductor, and basic passives, minimizing the design size.

With the wide operating input voltage range of 4.5V to 28V, this device is an excellent choice for systems powered from 12V, 19V, 24V power-bus rails. TPSM86838 supports up to 8A continuous output current, which output voltage is between 0.6V and 5.5V.

The TPSM86838 uses DCAP3 control mode to provide fast transient response, good line and load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors like MLCC.

The TPSM86838 operates in forced continuous conduction mode (FCCM) during light load, provides complete non-latched OV (Undervoltage), UV (Undervoltage), OC (Overcurrent), OT (Overtemperature), and UVLO (Undervoltage lockout) protections combined with power-good indicator and output discharge function features.

The TPSM86838 is available in a 19-pin 5.0mm × 5.5mm HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.

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Technical documentation

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* Data sheet TPSM86838 4.5V to 28V Input, 8A Synchronous Buck Power Module datasheet (Rev. A) PDF | HTML 18 Dec 2023
Certificate TPSM86838EVM EU Declaration of Conformity (DoC) 11 Oct 2023
EVM User's guide TPSM86838 Buck Module Evaluation Module User's Guide PDF | HTML 28 Sep 2023

Design & development

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Evaluation board

TPSM86838EVM — TPSM86838 evaluation module 4.5-V to 28-V input, 8-A synchronous step-down power module

The TPSM86838 evaluation module (EVM) is a high-efficiency, high-voltage input, easy-to-use synchronous buck power module. It integrates power MOSFETs, a shielded inductor and basic passives, minimizing the solution size. With the wide operating input voltage range of 4.5 V to 28 V, the TPSM86838 (...)

User guide: PDF | HTML
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Simulation model

TPSM86838 PSpice Model

SLVME20.ZIP (246 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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B3QFN (RCG) 19 View options

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