TPS56720 17V Input, 7A Synchronous Step-Down Regulator with Voltage Scaling | TI.com

TPS56720 (ACTIVE)

17V Input, 7A 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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Parametrics Compare all products in Buck converters (integrated switch)

 
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)
TPS56720 TPS51362 TPS53318 TPS53319 TPS53353 TPS53355 TPS56520 TPS566250 TPS56628 TPS56920 TPS56C20
4.5     3     1.5     1.5     1.5     1.5     4.5     4.5     4.5     4.5     4.5    
17     22     22     22     15     15     17     17     18     17     17    
0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.6     0.76     0.6     0.6    
1.87     2     5.5     5.5     5.5     5.5     1.87     1.87     5.5     1.87     1.87    
7     10     8     14     20     30     5     6     6     9     12    
1     1     1     1     1     1     1     1     1     1     1    
500     800     250     250     250     250     500     500     650     500     500    
500     800     1000     1000     1000     1000     500     500     650     500     500    
0.92     0.1     0.32     0.32     0.32     0.32     0.92     0.9     0.95     0.92     0.92    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
Enable
Light Load Efficiency
Power Good
Synchronous Rectification
UVLO Adjustable
Adaptive/Dynamic Voltage Scaling    
Enable
Light Load Efficiency
Power Good
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
D-CAP2     D-CAP2     D-CAP     D-CAP     D-CAP     D-CAP     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2