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 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)
TPS54292 TPS54290 TPS54291 TPS65253 TPS65270
4.5     4.5     4.5     4.5     4.5    
18     18     18     16     16    
0.8     0.8     0.8     0.8     0.8    
14     16.2     15.3     15     15    
2.5     2.5     2.5     3.5     3    
2     2     2     2     2    
1200     300     600     300     300    
1200     300     600     1500     1.4    
1.8     1.8     1.8     0.6     0.01    
Enable
Phase Interleaving
Synchronous Rectification    
Enable
Phase Interleaving
Synchronous Rectification    
Enable
Phase Interleaving
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Synchronous Rectification
UVLO Adjustable    
Light Load Efficiency
Phase Interleaving
Pre-Bias Start-Up    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode    
78     90     85     100     100    
-40 to 145     -40 to 145     -40 to 145     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog    
HTSSOP | 16     HTSSOP | 16     HTSSOP | 16     VQFN | 28     HTSSOP | 24
VQFN | 24    
Converter     Converter     Converter     Converter     Converter    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)     24HTSSOP: 50 mm2: 6.4 x 7.8 (HTSSOP | 24)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)