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

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



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.


  • 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


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)
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)