TPS53127 4.5V-24V input Synchronous DCAP2 Mode Dual Step-Down Controller | TI.com

TPS53127 (ACTIVE)

4.5V-24V input Synchronous DCAP2 Mode Dual Step-Down Controller

 

Description

The TPS53127 is a dual, adaptive on-time D-CAP2™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment’s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53127 uses the D-CAP2 Mode topology which provides a very fast transient response with no external component.

The TPS53127 also has a proprietary circuit that enables the device to adapt not only low equivalent series resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to 5.5 V.

The TPS53127 is available in the 24 pin RGE/PW package, and is specified from –40°C to 85°C ambient temperature range.

Features

  • D-CAP2 Mode Control
    • Fast Transient Response
    • No External Parts Required for Loop Compensation
    • Compatible With Ceramic Output Capacitors
  • High Initial Reference Accuracy (±1%)
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(ON) Loss-Less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Adjustable Soft Start
  • Non-Sinking Pre-Biased Soft Start
  • 700-kHz Switching Frequency
  • Cycle-by-Cycle Over-Current Limiting Control
  • 30-mV to 300-mV OCP Threshold Voltage
  • Thermally Compensated OCP by 4000 ppm/°C at ITRIP
  • APPLICATIONS
    • Point-of-Load Regulation in Low Power Systems for
      Wide Range of Applications
      • Digital TV Power Supply
      • Networking Home Pin
      • Digital Set-Top Box (STB)
      • DVD Player/Recorder
      • Gaming Consoles

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Parametrics Compare all products in Buck controllers (external switch)

 
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
TPS53127 TPS53125 TPS53126
4.5     4.5     4.5    
24     24     24    
0.76     0.76     0.76    
5.5     5.5     5.5    
15     15     15    
2     2     2    
1     1     1    
700     350     350    
700     350     700    
0.45     0.45     0.45    
Enable
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Pre-Bias Start-Up
Synchronous Rectification    
89     89     89    
-40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog    
TSSOP | 24
VQFN | 24    
TSSOP | 24
VQFN | 24    
TSSOP | 24
VQFN | 24    
Controller     Controller     Controller    
D-CAP2     D-CAP2     D-CAP2