TPS65268-Q1 4-V to 8-V, 3-A, 2-A Triple Synchronous Step-Down Converter | TI.com

TPS65268-Q1 (ACTIVE)

4-V to 8-V, 3-A, 2-A Triple Synchronous Step-Down Converter

 

Description

The TPS65268-Q1 device incorporates triple-synchronous buck converters with 4- to 8-V wide input voltage. The converter with constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters is adjustable from 200 kHz to 2.3 MHz with an external resistor. Operation that is 180° out-of-phase between BUCK1 and BUCK2, and BUCK3 (BUCK2 and BUCK3 run in phase) minimizes the input filter requirements.

Each buck converter in the TPS65268-Q1 device operates in forced continuous-current mode (FCCM) at light load condition for reduced output voltage ripple and improved load transient response.

The TPS65268-Q1 device features overvoltage, overcurrent, short-circuit, and overtemperature protection.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Operating Junction Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Operating Input Voltage Range 4- to 8-V Maximum Continuous Output Current 3 A, 2 A,
    2 A
  • Feedback Reference Voltage 0.6 V ±1%
  • Adjustable Clock Frequency from 200 kHz to 2.3 MHz
  • Forced Continuous Current Mode (FCCM)
  • External Clock Synchronization
  • Dedicated Enable and Soft-Start Pins for Each Buck
  • Output Voltage Power Good Indicator
  • Thermal Overloading Protection

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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)
TPS65268-Q1 TPS65263-1Q1 TPS65263-Q1
4     4     4    
8     18     18    
0.6     0.6     0.6    
6     16     16    
3     3     3    
3     3     3    
200     200     200    
2300     2300     2300    
0.6     0.6     0.6    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Frequency Synchronization
Over Current Protection
Power Good
Synchronous Rectification
Tracking
UVLO Adjustable    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Phase Interleaving
Power Good
Synchronous Rectification
UVLO Adjustable    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Phase Interleaving
Power Good
Synchronous Rectification
UVLO Adjustable    
Current Mode     Current Mode     Current Mode    
100     100     100    
-40 to 125     -40 to 125     -40 to 125    
Automotive     Automotive     Automotive    
VQFN | 32     VQFN | 32     VQFN | 32    
Converter     Converter     Converter    
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)