TPS53313 6-A, Step-Down Regulator with Integrated Switcher | TI.com

TPS53313 (ACTIVE)

6-A, Step-Down Regulator with Integrated Switcher

 

Description

TPS53313 provides a 5-V or 12-V synchronous buck converter that integrates two N-Channel MOSFETs. Due to low RDS(on) and TI proprietary SmoothPWM skip mode of operation, it optimizes the efficiency at light-load condition without compromising the output voltage ripple.

The TPS53313 features programmable (from 250 kHz to 1.5 MHz) switching frequency with selectable skip mode or forced CCM mode operation. The device provides prebiased startup, soft-stop, integrated bootstrap switch, power good function, and EN/input UVLO protection. It supports input voltages from 4.5 V to 16 V and no extra bias voltage is needed. The output voltage is adjustable from 0.6 V up to 0.7 × VIN.

The TPS53313 is available in a 4 mm × 4 mm, 24-pin VQFN package (Green RoHs compliant and Pb free) and operates from –40°C to 85°C.

Features

  • 4.5-V to 16-V Conversion Voltage Range
  • Adjustable Output Voltage Ranging from 0.6 V to 0.7 × VIN
  • Continuous 6-A Output Current
  • Supports All MLCC Output Capacitors
  • Selectable SKIP Mode or Forced CCM
  • Selectable Soft-Start Time (1 ms, 3 ms, or 6 ms)
  • Selectable 4-5 A, 6-A or 9-A Peak Current Limit
  • Optimized Efficiency at Light and Heavy Loads
  • Voltage Mode Control
  • Programmable Switching Frequency from 250 kHz to 1.5 MHz
  • Synchronizes to External Clock
  • RDS(on) Sensing for Zero Crossing Detection and Overcurrent Protection
  • Soft-Stop Output Discharge During Disable
  • Overcurrent, Overvoltage, and Undervoltage Protection With Hiccup
  • Overtemperature Protection
  • Open-Drain, Power Good Indication
  • Internal Bootstrap Switch
  • 4 mm × 4 mm, 24-Pin VQFN Package

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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)
TPS53313 TPS51312 TPS51313 TPS53311
4.5     3.1     3.1     2.9    
16     5.5     5.5     6    
0.6     0.6     0.6     0.6    
10     3.3     3.3     4.2    
6     3     3     3    
1     1     1     1    
250     900     1000     1100    
1500     900     1000     1100    
0.32     0.8     0.8     0.32    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Voltage Mode     D-CAP2     D-CAP2     Voltage Mode    
99     90     90     99    
-40 to 85     -40 to 85     -10 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog    
VQFN | 24     VSON | 10     VSON | 10     VQFN | 16    
Converter     Converter     Converter     Converter    
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     10VSON: 9 mm2: 3 x 3 (VSON | 10)     10VSON: 9 mm2: 3 x 3 (VSON | 10)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    

Design tool

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WEBENCH® Designer TPS53313

  Min   Max Range
Vin  V 4.5 to 16.0V
Vout  V 0.6 to 12V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 150°C