UCC25600 8-Pin High-Performance Resonant Mode LLC Controller | TI.com

UCC25600 (ACTIVE)

8-Pin High-Performance Resonant Mode LLC Controller

8-Pin High-Performance Resonant Mode LLC Controller - UCC25600
 

Description

The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16-pin device offerings.

The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option.

The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.

Features

  • Variable Switching Frequency Control
  • Programmable Minimum Switching Frequency
    With 4% Accuracy (3% Accuracy at Temperature
    Range: –20°C to 105°C)
  • Programmable Maximum Switching Frequency
  • Programmable Dead Time for Best Efficiency
  • Programmable Soft-Start Time
  • Easy ON and OFF Control
  • Overcurrent Protection
  • Overtemperature Protection
  • Bias Voltage UVLO and Overvoltage Protection
  • Integrated Gate Driver With 0.4-A Source and 0.8-
    A Sink Capability
  • Operating Temperature Range: –40°C to 125°C
  • SOIC 8-Pin Package

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Parametrics Compare all products in PWM and Resonant Controller

 
Topology
Control Method
VCC (Min) (V)
VCC (Max) (V)
Frequency (Max) (kHz)
Duty Cycle (Max) (%)
Gate Drive (Typ) (A)
Features
Rating
Operating Temperature Range (C)
Pin/Package
UCC25600 UCC256301 UCC256302 UCC256303 UCC256304
Half-Bridge
Resonant LLC    
Half-Bridge
Resonant LLC    
Half-Bridge
Resonant LLC    
Half-Bridge
Resonant LLC    
Half-Bridge
Resonant LLC    
Voltage     Current     Current     Current     Current    
11     13     13     11.25     13    
18     30     30     30     30    
350     1000     1000     1000     1000    
50     50     50     50     50    
0.8     0.6     0.6     0.6     0.6    
  HV Start-up
Integrated gate drivers
Light Load Efficiency
Thermal Shutdown
Wide DC input
X cap discharge integrated    
HV Start-up
Integrated gate drivers
Light Load Efficiency
Thermal Shutdown    
Integrated gate drivers
Light Load Efficiency
Supports external bias
Thermal Shutdown    
HV Start-up
Integrated gate drivers
Light Load Efficiency
Thermal Shutdown
Wide AC input
Wide DC input
X cap discharge integrated    
Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
8SOIC     14SOIC     14SOIC     14SOIC     14SOIC