TPS548D21 1.5V to 16V Input, 40A SWIFT™ Synchronous Step-Down Converter with AVSO and Diff. Remote Sense | TI.com

TPS548D21 (ACTIVE)

1.5V to 16V Input, 40A SWIFT™ Synchronous Step-Down Converter with AVSO and Diff. Remote Sense

 

Description

The TPS548D21 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 2.9 mΩ and a low-side on-resistance of 1.2 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, FCCM mode operation, and internal soft-start control.

The TPS548D21 device is available in 7-mm × 5-mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

Features

  • Conversion Input Voltage Range (PVIN): 1.5 V to 16 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 2.9-mΩ and 1.2-mΩ Power MOSFETs With 40-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop
  • Analog AVS Optimization via REFIN_TRK Pin
  • Adaptive On-Time Control with 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz, and 1.05 MHz
  • Temperature Compensated and Programmable Current Limit with RILIM and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • FCCM Mode During All Operation
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package
  • Create a Custom Design Using the TPS548D21 With the WEBENCH® Power Designer

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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)
TPS548D21 TPS53355 TPS548D22 TPS549D22
1.5     1.5     1.5     1.5    
16     15     16     16    
0.6     0.6     0.6     0.6    
5.5     5.5     5.5     5.5    
40     30     40     40    
1     1     1     1    
425     250     425     315    
1050     1000     1050     1125    
2     0.32     2     2    
Adjustable Current Limit
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable
Voltage Margining
Adaptive/Dynamic Voltage Scaling
Differential Remote Sense
Differential Remote Sense    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Differential Remote Sense    
Adjustable Current Limit
Enable
Light Load Efficiency
PMBus
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable
Voltage Margining
Adaptive/Dynamic Voltage Scaling    
D-CAP3     D-CAP     D-CAP3     D-CAP3    
80     90     80     80    
-40 to 125     -40 to 85     -40 to 125     -40 to 85    
Catalog     Catalog     Catalog     Catalog    
LQFN-CLIP | 40     LSON-CLIP | 22     LQFN-CLIP | 40     LQFN-CLIP | 40    
Converter     Converter     Converter     Converter    
40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)     22LSON-CLIP: 30 mm2: 5 x 6 (LSON-CLIP | 22)     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)     40LQFN-CLIP: 35 mm2: 5 x 7 (LQFN-CLIP | 40)    

Design tool

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WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS548D21

  Min   Max Range
Vin  V 1.5 to 16.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 40A
Ambient Temp  °C -40 to 85°C