TPS54394 3A Dual Channel Synchronous Step-Down Switcher with Integrated FET | TI.com

TPS54394
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
3A Dual Channel Synchronous Step-Down Switcher with Integrated FET

 

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Description

The TPS54394 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54394 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54394 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54394 to maintain high efficiency during lighter load conditions. The TPS54394 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS54394 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.

Features

  • D-CAP2 Control Mode
    • Fast Transient Response
    • No External Parts Required For Loop Compensation
    • Compatible with Ceramic Output Capacitors
  • Wide Input Voltage Range : 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for
    Low Duty Cycle Applications
    • 90 mΩ (High Side) and 60 mΩ (Low Side)
  • High Initial Reference Accuracy
  • Supports Constant 3 A at Both Channels
  • Low-Side rDS(on) Loss-Less Current Sensing
  • Fixed Soft Start : 1 ms
  • Non-Sinking Pre-Biased Soft Start
  • Powergood
  • 700 kHz Switching Frequency
  • Cycle-by-Cycle Over-Current Limit Control
  • Hiccup Timer for Overload Protection
  • OCL/UVLO/TSD Protections
  • Adaptive Gate Drivers with Integrated Boost PMOS Switch
  • OCP Constant Due To Thermally Compensated rDS(on)
    with 4000ppm/°C
  • 16-Pin HTSSOP, 16-Pin VQFN
  • Auto-Skip Eco-mode™ for High Efficiency at Light Load

WEBENCH® Designer TPS54394

  Min   Max Range
Vin1  V 4.50 to 18.00V
Vout1  V 0.78 to 7V
Iout1  A ≤ 3.00A
 
Vin2  V 4.50 to 18.00V
Vout2  V 0.78 to 7V
Iout2  A ≤ 3.00A
 
Ambient Temp  °C -40.00 to 125.00°C

Parametrics

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Part number Order Regulated outputs (#) Vin (Min) (V) Vin (Max) (V) Iout (Max) (A) Iq (Typ) (mA) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS54394 Order now 2     4.8     18     3     1.2     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Fixed    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54294 Order now 2     4.5     18     2     1.3     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Fixed
Power Good    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS542941 Order now 2     4.5     18     2     1.3     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Fixed    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54295 Order now 2     4.5     18     2     1.3     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS542951 Order now 2     4.5     18     2     1.3     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54395 Order now 2     4.5     18     3     1.2     Enable
Light Load Efficiency
Synchronous Rectification
Multiple Outputs
Soft Start Adjustable    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54494 Order now 2     4.5     18     4     1.2     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Fixed    
Catalog     -40 to 85     HTSSOP | 16
QFN | 16    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)
16QFN: 16 mm2: 4 x 4 (QFN | 16)    
TPS54495 Order now 2     4.5     18     4     1.2