UCC3813-3 Low Power Economy BiCMOS Current Mode PWM | TI.com

UCC3813-3
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Low Power Economy BiCMOS Current Mode PWM

Low Power Economy BiCMOS Current Mode PWM - UCC3813-3
Datasheet
UCCx813-x Low-Power Economy BiCMOS Current-Mode PWM datasheet (Rev. E)
 

Description

The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.

The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.

Features

  • 100-µA Typical Starting Supply Current
  • 500-µA Typical Operating Supply Current
  • Operation to 1 MHz
  • Internal Soft Start
  • Internal Fault Soft Start
  • Internal Leading-Edge Blanking of the Current-Sense Signal
  • 1-A Totem-Pole Output
  • 70-ns Typical Response from Current-Sense to Gate-Drive Output
  • 1.5% Tolerance Voltage Reference
  • Same Pinout as the UCC3802 Device, UC3842 Device, and UC3842A Device Families

WEBENCH® Designer UCC3813-3

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
  Min   Max Range
VinRMS –  V 5.50 to 2000.00V
Vout  V 3.3 to 1000V
Iout  A ≤ 100A
Ambient Temp  °C 0 to 70°C

What are WEBENCH® tools?

Parametrics

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Part number Order Topology Control method VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) UVLO thresholds on/off (V) Duty cycle (Max) (%) Gate drive (Typ) (A) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
UCC3813-3 Order now Boost
Buck
Flyback
Forward    		 Current     4.1     11     1000     4.1/3.6     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog     0 to 70     PDIP | 8
SOIC | 8
TSSOP | 8    		 8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
UCC3813-0 Order now Boost
Buck
Flyback
Forward    		 Current     7.2     11     1000     7.2/6.9     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog     0 to 70     PDIP | 8
SOIC | 8
TSSOP | 8    		 8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
UCC3813-1 Order now Boost
Buck
Flyback
Forward    		 Current     9.4     11     1000     9.4/7.4     50     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog     0 to 70     PDIP | 8
SOIC | 8
TSSOP | 8    		 8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
UCC3813-2 Order now Boost
Buck
Flyback
Forward    		 Current     12.5     11     1000     12.5/8.3     100     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog     0 to 70     PDIP | 8
SOIC | 8
TSSOP | 8    		 8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
UCC3813-4 Order now Boost
Buck
Flyback
Forward    		 Current     12.5     11     1000     12.5/8.3     50     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog     0 to 70     PDIP | 8
SOIC | 8
TSSOP | 8    		 8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
UCC3813-5 Samples not available Boost
Buck
Flyback
Forward    		 Current     4.1     11     1000     4.1/3.6     50     1     Adjustable Switching Frequency
Current Limiting
Dead Time Control
Error Amplifier
Leading Edge Blanking
Multi-topology
Soft Start    		 Catalog