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 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
Vin (Min) (V)
Vin (Max) (V)
VCC (Min) (V)
VCC (Max) (V)
Frequency (Max) (kHz)
UVLO Thresholds On/Off (V)
Duty Cycle (Max) (%)
Gate Drive (Typ) (A)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
UCC25600
Resonant
Half-Bridge    
Voltage    
12    
450    
11.5    
22    
350    
10.5/9.5    
50    
0.8    
Soft Start
Soft Switching    
Catalog    
-40 to 125    
8SOIC    
0.45 | 1ku