8-Pin High-Performance Resonant Mode Controller - UCC25600

UCC25600 (ACTIVE)

8-Pin High-Performance Resonant Mode Controller

Description

The UCC25600 high performance resonant mode controller is designed for dc-to-dc applications utilizing 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, 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 30 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 will maximize system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipments utilizing a half bridge topology. By incorporating 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 over current, UVLO, bias supply OVP and over temperature 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/OFF Control
  • Over-Current Protection
  • Over-Temperature Protection
  • Bias Voltage UVLO and OVP
  • 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
Duty Cycle (Max) (%)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Regulated Outputs (#)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
UCC25600
Resonant
Half-Bridge    
Voltage    
50    
350    
10.5/9.5    
2    
Soft Start
Soft Switching    
Catalog    
-40 to 125    
8SOIC    
0.70 | 1ku    
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