TPS56C20 17V Input, 12A Synchronous Step-Down Regulator with Voltage Scaling | TI.com

TPS56C20
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17V Input, 12A Synchronous Step-Down Regulator with Voltage Scaling

 

Description

The TPS56X20 is a synchronous DC-DC converter IC (integrated circuit) with a voltage scaling control to power up micro-processors (MCUs) requiring core voltage (VCORE) tune-ups. After the initial power-up, the output voltage can be programmed/scaled by VID codes sent over an I2C compatible bus.

This step-down (buck) converter employs an adaptive on-time D-CAP2 mode control which provides a very fast transient response with no external components. Unlike traditional voltage-/current-mode controls, the D-CAP2 supports seamless transition between PWM mode for higher load and Eco-mode™ for light load. Eco-mode maintains high efficiency in light-load.

The TPS56X20 supports both ultra-low ESR ceramic capacitors and low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP. The device is optimized for a small 1.0µH to 2.2µH inductor saving PCB area.

The TPS56X20 devices are available in the HTSSOP package.

Features

  • D-CAP2™ Control
    • Input Voltage Range: 4.5V to 17V
    • Switching Frequency: 500kHz
    • Optimized for a 1.0µH to 2.2µH Inductor
  • ±1% Output Voltage Accuracy
  • Features via I2C Compatible Interface
    • Output Voltage (VID): 0.6V to 1.87V in 10mV
    • Auto-Skip Eco-mode™ ON/OFF (Light-load)
    • Current Limit Target: 40% to 160%
    • Enabling IC, Reading-back Power-good
    • Hiccup Mode Protection ON/OFF
  • IC Terminal Features
    • Start-up by Using External Resistors
      Output Voltage with VFB Pin: 0.6V to 1.87V
    • Adjustable Soft-start,
      Monotonic Pre-Biased Start-up
    • Power-good
    • I2C Address Programming (2bits)
  • Cycle-by-Cycle Overcurrent Limiting Control
  • Thermal Shutdown (TSD)
  • Undervoltage Lockout (UVLO)
  • TSSOP Package (PWP) with PowerPAD™

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  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.6 to 1.87V
Iout  A ≤ 12A
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 Type Package size: mm2:W x L (PKG)
TPS56C20 Order now 4.5     17     0.6     1.87     12     1     500     500     0.92     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Forced PWM
Soft Start Adjustable    
D-CAP2     80     -40 to 85     Catalog     HTSSOP | 24     Converter     24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)    
TPS56920 Order now 4.5     17     0.6     1.87     9     1     500     500     0.92     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Forced PWM
Soft Start Adjustable    
D-CAP2     80     -40 to 85     Catalog     HTSSOP | 20     Converter     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)