TPS54292 4.5V to 18V Input, 1.5/2.5A Dual Synchronous Step-Down Converter | TI.com

TPS54292 (ACTIVE)

4.5V to 18V Input, 1.5/2.5A Dual Synchronous Step-Down Converter

 

Description

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

Features

  • 4.5-V to 18-V Input Range
  • Output Voltage Range 0.8 V to DMAX × VIN
  • Fully Integrated Dual Buck: 1.5 A and 2.5 A
  • Three Fixed Switching Frequency Versions:
    • TPS54290: 300 kHz
    • TPS54291: 600 kHz
    • TPS54292: 1.2 MHz
  • Integrated UVLO
  • 0.8 VREF With 1% Accuracy (0°C to 85°C)
  • Internal Soft Start:
    • TPS54290: 5.2 ms
    • TPS54291: 2.6 ms
    • TPS54292: 1.3 ms
  • Dual PWM Outputs 180° Out-of-Phase
  • Dedicated Enable for Each Channel
  • Current Mode Control for Simplified Compensation
  • External Compensation
  • Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
  • Integrated Bootstrap Switch
  • Thermal Shutdown Protection at 145°C
  • 16-Pin PowerPAD™ HTSSOP Package
  • APPLICATIONS
    • Set-Top Boxes
    • Digital TVs
    • Power for DSP
    • Consumer Electronics

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Parametrics

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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)
TPS54292 Order now 4.5     18     0.8     14     2.5     2     1200     1200     1.8     Enable
Phase Interleaving
Synchronous Rectification    
Current Mode     78     -40 to 145     Catalog     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
TPS54290 Order now 4.5     18     0.8     16.2     2.5     2     300     300     1.8     Enable
Phase Interleaving
Synchronous Rectification    
Current Mode     90     -40 to 145     Catalog     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
TPS54291 Order now 4.5     18     0.8     15.3     2.5     2     600     600     1.8     Enable
Phase Interleaving
Synchronous Rectification    
Current Mode     85     -40 to 145     Catalog     HTSSOP | 16     Converter     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)    
TPS65253 Order now 4.5     16     0.8     15     3.5     2     300     1500     0.6     Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification
UVLO Adjustable    
Current Mode     100     -40 to 85     Catalog     VQFN | 28     Converter     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)    
TPS65270 Order now 4.5     16     0.8     15     3     2     300     1.4     0.01     Light Load Efficiency
Phase Interleaving
Pre-Bias Start-Up    
Current Mode     100     -40 to 85     Catalog     HTSSOP | 24
VQFN | 24    
Converter     24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)