TPS56C230 4.5-V to 18-V, 12-A synchronous buck converter | TI.com

TPS56C230
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4.5-V to 18-V, 12-A synchronous buck converter

 

Description

The TPS56C230 is a high efficiency synchronous buck converter with integrated FETs. System designers can use the device in a wide variety of applications since it draws low standby current and requires few external components.

The TPS56C230 employs D-CAP3 control that provides fast transient response and excellent line and load regulation with internal compensation. It also has a proprietary circuit that enables the device to support low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors.

TPS56C230‘s MODE pin can be used to set Eco-mode or FCCM mode for light-load operation. Eco-mode maintains high efficiency during light load operation, and FCCM mode operations keeps output ripple small at light load. The device supports both internal and external soft-start time option. It has an internal fixed soft-start time 1.2 ms, but if the application needs a longer soft-start time, the external SS pin can be used to achieve it by connecting a external capacitor.

The TPS56C230 integrates power good indicator and provides output discharge function. It provides complete protection including OVP, UVP, OCP, OTP and UVLO. The device is available in a 20-pin 3.0-mm x 3.0-mm HotRod package and the junction temperature is specified from –40°C to 125°C.

Features

  • Input voltage range: 4.5 V to 18 V
  • Output voltage range: 0.6 V to 5.5 V
  • Supports 12-A continuous output current
  • D-CAP3™ architecture control for fast transient response
  • ±1% feedback voltage accuracy (25°C)
  • Integrated 17-mΩ and 5.9-mΩ FETs
  • Selectable Eco-mode™ and Forced Continuous Conductive Mode (FCCM) by MODE pin
  • 500-kHz switching frequency
  • Adjustable soft-start time with default 1.2 ms
  • Integrated Power Good indicator
  • Built-in output discharge function
  • Cycle-by-cycle over current protection
  • Non-latched over-voltage, under-voltage, over-temperature and under voltage lock-out protections
  • -40°C to 125°C Operating Junction Temperature
  • 20-pin 3.0-mm × 3.0-mm HotRod™ VQFN package
  • Pin to pin compatible with 8-A TPS568230
  • Create a Custom Design Using the TPS56C230 With the WEBENCH® Power Designer

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WEBENCH® Designer TPS56C230

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.6 to 7V
Iout  A ≤ 12A
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)
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)    
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)