TPS568230 4.5-V to 18-V input, 8-A synchronous step-down voltage regulator | TI.com

TPS568230
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4.5-V to 18-V input, 8-A synchronous step-down voltage regulator

 

Description

The TPS568230 is a cost effective, high-voltage input, high efficiency synchronous buck converter with integrated MOSFETs.

The TPS568230 has the ULQ™ (Ultra Low Quiescent current) feature to enable low-bias current. It operates with supply input voltage from 4.5 V to 18 V. It uses DCAP3™ control mode to provide fast transient response, good line, load regulation, no requirement for external compensation, and support low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors.

The TPS568230 provides complete Over-voltage, Under-voltage, Over-current, Over-temperature and Under-voltage lock-out protections. It is combined power good signal , output discharge function and large duty operation feature.

TPS568230 is equipped with a MODE pin to select the desirable mode of operation. To attain high efficiency at light load, OOA mode and Advanced Eco-mode™ could be selected. OOA mode will not allow the part to go below audible frequency ( below 25kHz switching frequency ). FCCM is also available to support tight output voltage ripple requirement.

The TPS568230 supports both internal and external soft-start time option. The internal fixed soft-start time is 1.3 ms. Longer soft-start time can be get by connecting the external capacitor on SS pin.

The TPS568230 is available in a 20-pin 3.0-mm x 3.0-mm HotRod™ package and the junction temperature is specified from -40oC to 125oC.

Features

  • Input voltage range: 4.5 V to 18 V
  • D-CAP3™ architecture control for fast transient response
  • Output voltage range: 0.6 V to 7 V
  • 0.6-V±1% reference voltage (25°C)
  • Supports 8-A continuous output current
  • Integrated 19.5-mΩ and 9.5-mΩ RDS(on) internal power MOSFET
  • ULQ™(Ultra Low Quiescent current) feature to enable long battery life
  • Selectable operation modes:
    • Forced continuous conduction mode (FCCM)
    • Out-of-Audio™(OOA) Mode
    • Advanced Eco-Mode™
  • Selectable 600-kHz, 800-kHz and 1-MHz switching frequency
  • Supports up to 90% duty operation
  • Adjustable soft start time by SS pin
  • Power good output
  • Built-in output discharge function
  • Cycle-by-cycle over current protection
  • Non-latched for fault protection
  • Small 3.0-mm × 3.0-mm HotRod™ QFN package

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  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.6 to 7V
Iout  A ≤ 8A
Ambient Temp  °C -40 to 125°C

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 Package size: mm2:W x L (PKG)
TPS568230 Order now 4.5     18     0.6     7     8     1     600     1000     0.11     Enable
Forced PWM
Light Load Efficiency
Over Current Protection
Power Good
Soft Start Adjustable    
D-CAP3     85     -40 to 125     Catalog     VQFN-HR | 20     20VQFN-HR: 9 mm2: 3 x 3 (VQFN-HR | 20)    
TPS56C230 Order now 4.5     18     0.6     5.5     12     1     500     800     0.08     Enable
Forced PWM
Light Load Efficiency
Over Current Protection
Power Good
Soft Start Adjustable
Forced PWM
Soft Start Adjustable    
D-CAP3     91     -40 to 125     Catalog     VQFN-HR | 20     20VQFN-HR: 9 mm2: 3 x 3 (VQFN-HR | 20)