TPS63020 High Current Buck-Boost Converter | 德州仪器 TI.com.cn

TPS63020 (正在供货)

High Current Buck-Boost Converter

 

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描述

The TPS6302x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 3 A while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters power save mode to maintain high efficiency over a wide load current range. The power save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 4 A. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery.

The TPS6302x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 14-pin VSON package measuring 3mm × 4mm (DSJ).

特性

  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options from 1.2 V to 5.5 V
  • Up to 96% Efficiency
  • 3-A Output Current at 3.3 V in Step Down Mode (VIN = 3.6 V to 5.5 V)
  • More than 2-A Output Current at 3.3 V in Boost Mode (VIN > 2.5 V)
  • Automatic Transition Between Step Down and Boost Mode
  • Dynamic Input Current Limit
  • Device Quiescent Current less than 50 µA
  • Power Save Mode for Improved Efficiency at Low Output Power
  • Forced Fixed Frequency Operation at 2.4 MHz and Synchronization Possible
  • Smart Power Good Output
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Overvoltage Protection
  • Available in a 3mm × 4mm 14-Pin VSON Package (DSJ)
  • Create a Custom Design Using the TPS6302x with the WEBENCH Power Designer

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参数 与其它产品相比 降压/升压,反相和分离式转换器(集成开关)

 
Topology
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Duty cycle (Max) (%)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Features
Iq (Typ) (mA)
Iout (Max) (A)
Rating
Type
Operating temperature range (C)
Package Group
TPS63020 TPS63000 TPS63000-Q1 TPS63010 TPS63020-Q1 TPS63030 TPS63036 TPS63070
Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost    
1.8     1.8     1.8     2     1.8     1.8     1.8     2    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     16    
1.2     1.2     1.2     1.2     1.2     1.2     1.2     2.5    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     9    
4     1.8     1.8     2.2     4     1     1     3.6    
100     100     100     100     100     100     100     100    
2200     1250     1250     2200     2200     2200     2200     2100    
2600     1500     1500     2400     2600     2600     2600     2800    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Output Discharge
Power Good
Synchronous Rectification
UVLO Fixed
Voltage Margining    
0.05     0.04     0.04     0.04     0.05     0.025     0.025     0.05    
2     0.8     0.8     0.8     2     0.5     0.5     2    
Catalog     Catalog     Automotive     Catalog     Automotive     Catalog     Catalog     Catalog    
Converter     Converter     Converter     Converter     Converter     Converter     Converter     Converter    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 85     -40 to 125    
VSON | 14     VSON | 10     VSON | 10     DSBGA | 20     VSON | 14     SON | 10     DSBGA | 8     VQFN-HR | 15