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TPS56528

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4.5V to 18V Input, 5-A Synchronous Step-Down Converter with Advanced Eco-mode™

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TPS565242 ACTIVE 3-V to 16-V input voltage, 5-A ECO mode, synchronous buck converter in SOT-563 package Upgraded with higher efficiency and smaller package

TPS56528

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 650 Switching frequency (max) (kHz) 650 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 7 Iq (typ) (µA) 250 Duty cycle (max) (%) 65
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 650 Switching frequency (max) (kHz) 650 Features Enable, Light Load Efficiency, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 7 Iq (typ) (µA) 250 Duty cycle (max) (%) 65
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.6 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications –68 mΩ (High-Side) and 37 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Band-Gap Reference Accuracy
  • Prebiased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Advanced Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • Power Good Output
  • Fixed Soft Start: 1 ms
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.6 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications –68 mΩ (High-Side) and 37 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Band-Gap Reference Accuracy
  • Prebiased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Advanced Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • Power Good Output
  • Fixed Soft Start: 1 ms

The TPS56528 device is an adaptive on-time D-CAP2&rade; mode synchronous buck converter. The TPS56528 enables system designers to complete the suite of various end-equipment power bus regulators with a cost-effective, low component count, low standby current solution. The main control loop for the TPS56528 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-Mode™ operation at light loads. Advanced Eco-Mode™ allows the TPS56528 to maintain high efficiency during lighter load conditions. The TPS56528 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.6 V and 7 V. The device also features a fixed 1-ms soft-start time and power good output. The TPS56528 is available in the 8-pin SO PowerPAD™ package, and designed to operate from –40°C to 85°C.

The TPS56528 device is an adaptive on-time D-CAP2&rade; mode synchronous buck converter. The TPS56528 enables system designers to complete the suite of various end-equipment power bus regulators with a cost-effective, low component count, low standby current solution. The main control loop for the TPS56528 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-Mode™ operation at light loads. Advanced Eco-Mode™ allows the TPS56528 to maintain high efficiency during lighter load conditions. The TPS56528 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.6 V and 7 V. The device also features a fixed 1-ms soft-start time and power good output. The TPS56528 is available in the 8-pin SO PowerPAD™ package, and designed to operate from –40°C to 85°C.
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Pin-for-pin with same functionality to the compared device
TPS54628 ACTIVE 4.5-V to 18-V, 6-A synchronous buck converter with eco-mode in HTSSOP package This product offers higher current (6 A).
TPS56428 ACTIVE 4.5V to 18V Input, 4-A Synchronous Step-Down Converter with Advanced Eco-mode™ This product offers lower current (4 A).

Technical documentation

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Type Title Date
* Data sheet TPS56528 4.5-V to 18-V Input, 5-A Synchronous Step-Down Converter With Advanced Eco-Mode™ datasheet (Rev. B) PDF | HTML 30 Nov 2016
EVM User's guide TPS56528 Buck Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 10 Jun 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Analog Design Journal Agency requirements for stand-by power consumption w/ offline and PoL converters 26 Jan 2016

Design & development

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

Evaluation board

TPS56528EVM-534 — TPS56528 Step-Down DC/DC Converter Evaluation Module

The Texas Instruments TPS56528EVM-534 evaluation module (EVM) helps designers evaluate the performance of the TPS56528 4.5V to 18V Input, 5A Synchronous Step-Down Converter with Eco-Mode.
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS56528 TINA-TI Transient Reference Design

SLVM886.TSC (720 KB) - TINA-TI Reference Design
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Simulation model

TPS56528 TINA-TI Transient Spice Model

SLVM885.ZIP (47 KB) - TINA-TI Spice Model
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Simulation model

TPS56528 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM855A.ZIP (51 KB) - PSpice Model
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HSOIC (DDA) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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