TPS53819A 3V to 28V Input, 40A, Eco-Mode™, D-CAP2™ Synchronous Buck Controller with PMBus™ | TI.com

TPS53819A (ACTIVE)

3V to 28V Input, 40A, Eco-Mode™, D-CAP2™ Synchronous Buck Controller with PMBus™

 

Description

The TPS53819A device is a small-sized, single buck controller with adaptive on-time D-CAP2 mode control and PMBus. The device is suitable for low output voltage and high current, system power rail, or similar point-of-load (POL) power supply in digital consumer products. Small package with minimal pin-count saves space on the PCB, while the programmability and fault report via PMBus simplify the power supply design. The skip-mode at light-load condition combined with strong gate drivers and low-side FET on-resistance (RDS(on)) current sensing can support low-loss and high efficiency operation, over a broad load range. The conversion input voltage, which is the high-side FET drain voltage, ranges from 3 V to 28 V. The supply voltage (VDD) is from 4.5 V to 28 V. The output voltage ranges from 0.6 V to 5.5 V. The device is available in a 16-pin, QFN package and is specified from –40°C to 85°C.

Features

  • Conversion Input Voltage Range: 3 V to 28 V
  • VDD Input Voltage Range: 4.5 V to 28 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Supports All Ceramic Output Capacitors
  • Reference Voltage: 600 mV ±0.5% Tolerance
  • ±9% Voltage Adjustment via PMBus
  • Built-in 5-V LDO
  • D-CAP2 Mode with 100-ns Load Step Response
  • Auto-Skip Eco-mode for Light-Load Efficiency
  • Adaptive On-Time Control Architecture With Eight Selectable Frequencies via PMBus
  • Supports Voltage Margining via PMBus
  • Programmable Soft-Start Time via PMBus
  • Programmable Power-On Delay via PMBus
  • Programmable VDD UVLO Level via PMBus
  • Fault Report via PMBus
  • Pre-Charged Start-Up Capability
  • Built-In Output Discharge
  • Power Good Output With Programmable Delay
  • Internal Overvoltage, Undervoltage, and Overcurrent Limit Protections
  • Thermal Shutdown (Non-Latch)
  • 3 mm × 3 mm, 16-pin, QFN Package

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  Min   Max Range
Vin  V 4.5 to 28.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 40A
Ambient Temp  °C -40 to 85°C

Parametrics

Compare all products in Buck controllers (external 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 (#) Number of Phases Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Control mode
TPS53819A Order now 3     28     0.6     5.5     40     1     1     275     1000     0.92     Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
90     -40 to 85     Catalog     VQFN | 16     Controller     D-CAP2    
TPS53219A Order now 3     28     0.6     5.5     20     1     1     250     970     0.4     Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up    
90     -40 to 85     Catalog     VQFN | 16     Controller     D-CAP