TPS56528

ACTIVE

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

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 650 Switching frequency (Max) (kHz) 650 Features Enable, Light Load Efficiency, Synchronous Rectification, Soft Start Fixed Control mode D-CAP2 Duty cycle (Max) (%) 65 Type Converter Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Buck converters (integrated switch)

Features

  • 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
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Description

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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Same functionality and pinout but is not an equivalent to the compared device:
TPS54628 ACTIVE 4.5V to 18V Input, 6-A Synchronous Step-Down Converter with Eco-mode™ 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).
Similar but not functionally equivalent to the compared device:
TPS565201 ACTIVE 4.5V to 17V, 5A, Synchronous Step-Down Voltage Regulator in SOT23 Simplify design with minimum external component count.

Technical documentation

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Type Title Date
* Datasheet TPS56528 4.5-V to 18-V Input, 5-A Synchronous Step-Down Converter With Advanced Eco-Mode™ datasheet (Rev. B) Nov. 30, 2016
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Agency requirements for stand-by power consumption w/ offline and PoL converters Jan. 26, 2016
User guides TPS56528EVM-534, 5-A, Regulator Evaluation Module Mar. 05, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$25.00
Description
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.
Features
  • D-CAP2 Control
  • Eco-Mode
  • Internal Slow Start
  • Power Good
  • Integrated FETs

Design tools & simulation

SIMULATION MODELS Download
SLVM855A.ZIP (51 KB) - PSpice Model
SIMULATION MODELS Download
SLVM885.ZIP (47 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVM886.TSC (720 KB) - TINA-TI Reference Design

Reference designs

REFERENCE DESIGNS Download
High Light-Load Efficient 120VAC Input, 25W/5VDC Reference Design with 4 POL Outputs
PMP11180 This 25-W design uses the UCC28740 in a flyback topology to minimize no-load standby power and the UCC24636 synchronous rectifier controller to minimize power MOSFET body-diode conduction times. The design also features point-of-load converters from the main 5V rail that implement an energy-saving (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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