UCC2895 BiCMOS Advanced Phase Shift Resonant Controller | TI.com

UCC2895 (ACTIVE) BiCMOS Advanced Phase Shift Resonant Controller

 

Description

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.

Features

  • Programmable-Output Turnon Delay
  • Adaptive Delay Set
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak Current-Mode, or Average
    Current-Mode Control
  • Programmable Softstart, Softstop and
    Chip Disable via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During UVLO

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)
UCC2895 Order now Phase-Shifted Full-Bridge     Current
Feedforward
Voltage    
10     16.5     1000     11/9     100     0.1     Adjustable Switching Frequency
Current Limiting
Error Amplifier
Multi-topology
Soft Start
Soft Switching
Synchronization Pin    
Catalog     -40 to 85     PDIP | 20
SOIC | 20
TSSOP | 20    
20PDIP: 229 mm2: 9.4 x 24.33 (PDIP | 20)
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
LM5046 Order now Phase-Shifted Full-Bridge     Current
Voltage    
10     14     1000     Programmable/1.25V     100     1.5
2    
Adjustable Switching Frequency
Current Limiting
Error Amplifier
HV Start-up
SR Logic
Soft Start
Soft Switching    
Catalog     -40 to 125     HTSSOP | 28
WQFN | 28    
28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
28WQFN: 25 mm2: 5 x 5 (WQFN | 28)    
UCC28950 Order now Phase-Shifted Full-Bridge     Current
Voltage    
8     17     1000     7.3/6.75     95     0.2     Adjustable Switching Frequency
Current Limiting
Error Amplifier
Light Load Efficiency
Multi-topology
SR Logic
Soft Start
Soft Switching
Synchronization Pin    
Catalog     -40 to 125     TSSOP | 24     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)    
UCC28951 Order now Phase-Shifted Full-Bridge     Current
Peak Current Mode
Voltage    
8     17     1000     7.3/6.7     97     0.2     Adjustable Switching Frequency
Current Limiting
Enable/Shutdown
Error Amplifier
Green Mode
Light Load Efficiency
Programmable Slope Compensation
Soft Start
Soft Switching
Synchronization Pin
Thermal Shutdown    
Catalog     -40 to 125     TSSOP | 24     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)    
UCC3895 Order now Phase-Shifted Full-Bridge     Current
Feedforward
Voltage    
10     16.5     1000     11/9     100     0.1     Adjustable Switching Frequency
Current Limiting
Error Amplifier
Multi-topology
Soft Start
Soft Switching
Synchronization Pin    
Catalog     0 to 70     PDIP | 20
SOIC | 20
TSSOP | 20    
20PDIP: 229 mm2: 9.4 x 24.33 (PDIP | 20)
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)