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

TPS568230 (ACTIVE) 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 FETs.

The key feature of the TPS568230 is its ULQ™ (Ultra Low Quiescent) feature to enable low-bias current and large duty operation. The ULQ™ feature is extremely beneficial for long battery life in low power operation. The TPS568230 operates with supply input voltage ranging from 4.5 V to 18 V. It uses DCAP3™ control mode to provide a fast transient response, good line, load regulation, no requirement for external compensation, and supports low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors.

The TPS568230 provides complete protection OVP, UVP, OCP, OTP and UVLO. It is combined power good signal and output discharge function.

MODE pin in TPS568230 can be used to set Eco-mode™, OOA mode or FCCM mode for light load operation. And OOA mode operations with switching frequency larger than 25 kHz even no loading.

The TPS568230 supports both internal and external soft-start time option. It has the internal fixed soft-start time 1.3 ms, if the application needs longer soft-start time, the external SS pin can be used to achieve it by connecting the external capacitor.

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
  • 1% feedback voltage accuracy (25°C)
  • Continual output current: 8 A
  • Integrated 19.5-mΩ and 9.5-mΩ RDS(on) internal power switch
  • ULQ™ operation to enable long battery life during system standby
  • Eco-Mode™, OOA and FCCM mode selectable for light load running by MODE pin
  • 600-kHz, 800-kHz and 1-MHz selectable switching frequency by MODE pin
  • OOA light-load operation with switching frequency over 25 kHz
  • Large duty operation support
  • Adjustable soft start time by SS pin
  • Power good indicator
  • Built-in output discharge function
  • Cycle-by-cycle over current protection
  • Non-latched for OC, OV, UV, OT and UVLO protections
  • 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

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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)