TPS54526 4.5V to 18V Input, 5.5A Synchronous Step-Down Converter with Eco-Mode™ | TI.com

TPS54526 (ACTIVE) 4.5V to 18V Input, 5.5A Synchronous Step-Down Converter with Eco-Mode™

 

Recommended alternative parts

  • TPS54626  -  Looking for a device with more output current? Try the TPS54626.
  • TPS54429E  -  Looking for a device with less output current? Try the TPS54429E.

Description

The TPS54526 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54526 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54526 uses the D-CAP2™ mode control which provides a very 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 TPS54526 to maintain high efficiency during lighter load conditions. The TPS54526 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP, 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 0.76V and 5.5V. The device also features an adjustable soft start time and a power good function. The TPS54526 is available in the 14-pin HTSSOP package and the 16 pin QFN package, designed to operate from –40°C to 85°C.

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: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized for Lower
    Duty Cycle Applications – 63 mΩ (High Side) and
    33 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
  • Power Good Output
  • Auto-Skip Eco-mode for High Efficiency at Light Load

New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.

WEBENCH® Designer TPS54526

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.765 to 5.5V
Iout  A ≤ 5.5A
Ambient Temp  °C -40 to 85°C


Footprint BOM Cost Efficiency


Preview design

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS54526 Order now 4.5     18     0.76     5.5     5.5     1     650     650     0.9     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     95     -40 to 85     Catalog     HTSSOP | 14
QFN | 16    
Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54525 Order now 4.5     18     0.76     5.5     5.5     1     650     650     0.9     Enable
Power Good
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     95     -40 to 85     Catalog     HTSSOP | 14     Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)    
TPS54527 Order now 4.5     18     0.76     6     5     1     650     650     0.9     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     85     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54528 Order now 4.5     18     0.76     6     5     1     650     650     0.9     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     85     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)