TPS568215 (ACTIVE)

4.5V to 17V Input, DCAP3 Mode, 8A Synchronous SWIFT™ Step-Down Converter

 

Description

The TPS568215 is TI’s smallest monolithic 8-A synchronous buck converter with an adaptive on-time D-CAP3™ control mode. The device integrates low RDS(on) power MOSFETs that enable high efficiency and offers ease-of-use with minimum external component count for space-conscious power systems. Competitive features include a very accurate reference voltage, fast load transient response, auto-skip mode operation for light load efficiency, adjustable current limit and no requirement for external compensation. A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS568215 is available in a thermally enhanced 18-pin HotRod™ QFN package and is designed to operate from –40°C to 150°C junction temperature. TPS568215 is pin to pin compatible with TPS56C215 which gives the user flexibility to pick solutions from 6A to 12A in the same footprint.

Features

  • Integrated 19-mΩ and 9.4-mΩ MOSFETs
  • Selectable FSW of 400 kHz, 800 kHz and 1.2 MHz
  • Adjustable Current Limit Settings with Hiccup Re-start
  • 0.6 V ±1% Reference Voltage Across Full Temperature Range
  • Optional External 5-V Bias Support for Enhanced Efficiency
  • D-CAP3™ Control Mode for Fast Transient Response
  • Selectable Forced Continuous Conduction Mode (FCCM) for Tight Output Voltage Ripple or Auto- Skipping Eco-mode™ for High Light-Load Efficiency
  • 0.6 V to 5.5 V Output Voltage Range
  • Supports Ceramic Output Capacitors
  • Monotonic Startup into Pre-biased Outputs
  • Adjustable Soft Start with a Default 1-ms Soft Start Time
  • –40°C to 150°C Operating Junction Temperature
  • Small 3.5-mm × 3.5-mm HotRod™ QFN Package
  • Supported at the WEBENCHreg; Design Center

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
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
TPS568215 TPS568215OA TPS56C215
4.5    4.5    4.5   
17    17    17   
0.6    0.6    0.6   
5.5    5.5    5.5   
8    8    12   
1    1    1   
400    400    400   
1200    1200    1200   
0.6    0.6    0.6   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
D-CAP3    D-CAP3    D-CAP3   
90    90    90   
-40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog   
VQFN-HR    VQFN-HR    VQFN-HR   
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WEBENCH® Designer TPS568215

  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 8A
Ambient Temp  °C -40 to 150°C


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