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TPS54528 Dataheets PDF



Part Number TPS54528
Manufacturers Texas Instruments
Logo Texas Instruments
Description 5-A Synchronous Step-Down Converter
Datasheet TPS54528 DatasheetTPS54528 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54528 SLVSAY4C – JULY 2011 – REVISED MARCH 2014 TPS54528 4.5-V To 18-V Input, 5-A Synchronous Step-Down Converter With Eco-Mode™ 1 Features •1 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: 0.76 V to 6 V • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications.

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54528 SLVSAY4C – JULY 2011 – REVISED MARCH 2014 TPS54528 4.5-V To 18-V Input, 5-A Synchronous Step-Down Converter With Eco-Mode™ 1 Features •1 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: 0.76 V to 6 V • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications – 65 mΩ (High Side) and 36 mΩ (Low Side) • High Efficiency, less than 10 μA at shutdown • High Initial Bandgap Reference Accuracy • Adjustable Soft Start • Pre-Biased Soft Start • 650-kHz Switching Frequency (fSW) • Cycle By Cycle Over Current Limit • Auto-Skip Eco-mode™ for High Efficiency at Light Load 2 Applications • Wide Range of Applications for Low Voltage System – Digital TV Power Supply – High Definition Blu-ray Disc™ Players – Networking Home Terminal – Digital Set Top Box (STB) 3 Description The TPS54528 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54528 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 TPS54528 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 Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54528 to maintain high efficiency during lighter load conditions. The TPS54528 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 0.76 V and 6 V. The device also features an adjustable soft start time. The TPS54528 is available in the 8-terminal DDA package, and designed to operate from –40°C to 85°C. Device Information ORDER NUMBER PACKAGE BODY SIZE TPS54528DDA HSOP (8) 4,89 mm × 3,9 mm 4 Simplified Schematic TPS54528 1.05-V, Load Transient Response Vout (50 mV/div) Iout (2 A/div) t - Time - 100 ms/div 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS54528 SLVSAY4C – JULY 2011 – REVISED MARCH 2014 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Simplified Schematic............................................. 1 5 Revision History.......................................


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