TPS53315 12-A Step-Down Regulator with Integrated Switcher | TI.com

TPS53315 (ACTIVE)

12-A Step-Down Regulator with Integrated Switcher

 

Description

TPS53315 is a D-CAP™ mode, 12-A synchronous switcher with integrated MOSFETs. It is designed for ease of use, low external component count, and small package power systems.

This device features single-rail input support, one 19-mΩ and one 7-mΩ integrated MOSFET, accurate 1%, 0.6 V Reference, and integrated boost switch. A sample of competitive features include: greater than 96% maximum efficiency, 3 V to 15 V wide input voltage range, very low external component count, D-CAP™ mode control for super fast transient, selectable auto-skip and PWM operation, internal soft-start control, adjustable frequency, and no need for compensation.

The conversion input voltage ranges from 3 V to 15 V, the supply voltage range is from 4.5 V to 25 V, and the output voltage range is from 0.6 V to 5.5 V.

The TPS53315 is available in a 5 mm × 7 mm 40-pin, VQFN package and is specified from –40°C to 85°C.

Features

  • Conversion Input Voltage Range: 3 V to 15 V
  • VDD Input Voltage Range: 4.5 V to 25 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • 5-V LDO Output
  • Integrated Power MOSFETs with 12-A Continuous
    Output Current
  • <10-µA Shut Down Current
  • Auto-Skip Eco-mode™ for Light-Load Efficiency
  • D-CAP™ Mode with Fast Transient Response
  • Selectable Switching Frequency from 250 kHz to
    1 MHz with an External Resistor
  • Built-in 1%, 0.6-V Reference
  • 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
    Internal Voltage Servo Soft-Start
  • Pre-Charged Start-up Capability
  • Integrated Boost Switch
  • Adjustable Overcurrent Limit Via External Resistor
  • Overvoltage/Undervoltage, UVLO and Over-
    Temperature Protection
  • Support All Ceramic Output Capacitors
  • Open Drain Power Good Indication
  • 40-pin VQFN Package with Thermal Pad

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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)
TPS53315 TPS53310 TPS53311 TPS53314 TPS53321
3     2.9     2.9     3     2.9    
15     6     6     15     6    
0.6     0.6     0.6     0.6     0.6    
5.5     4.2     4.2     5.5     4.2    
12     3     3     6     5    
1     1     1     1     1    
250     1100     1100     250     1100    
1000     1100     1100     1000     1100    
0.32     0.32     0.32     0.32     0.32    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Adjustable Current Limit
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Enable
Frequency Synchronization
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP     Voltage Mode     Voltage Mode     D-CAP     Voltage Mode    
90     99     99     90     99    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog    
VQFN | 40     VQFN | 16     VQFN | 16     VQFN | 40     VQFN | 16    
Converter     Converter     Converter     Converter     Converter    
40VQFN: 35 mm2: 5 x 7 (VQFN | 40)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     40VQFN: 35 mm2: 5 x 7 (VQFN | 40)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    

Design tool

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WEBENCH® Designer TPS53315

  Min   Max Range
Vin  V 4.5 to 15.0V
Vout  V 0.6 to 5.5V
Iout  A ≤ 12A
Ambient Temp  °C -40 to 150°C