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UCC1895JTIN/a18avaiBiCMOS Advanced Phase Shift Resonant Controller


UCC1895J ,BiCMOS Advanced Phase Shift Resonant ControllerELECTRICAL CHARACTERISTICSV = 12 V, R = 82 kΩ, C = 220 pF, R = 10 kΩ, R = 10 kΩ, C = 0.1μF, C = 0.1 ..
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UCC1895J
BiCMOS Advanced Phase Shift Resonant Controller
117777777720UCC3895
EAN EAP
EAOUT
RAMP
REF
GND ADS
PGND
OUTB
OUTA
SS/DISBB C
VIN
VOUT
VBIAS
UCC1895, UCC2895, UCC3895• Programmable-Output Turnon Delay
implements controlofa full-bridge power stage by• Adaptive Delay Set phase shifting the switchingof one half-bridge with Bidirectional Oscillator Synchronization respect to the other. The device allows constant
frequency pulse-width modulationin conjunction with• Voltage-Mode, Peak Current-Mode,or Average resonant zero-voltage switching to provide highCurrent-Mode Control efficiencyat high frequencies. The partis used either• Programmable Softstart, Softstop and Chip asa voltage-modeor current-mode controller.Disable viaa Single Pin While the UCC3895 maintains the functionalityof the• 0%to 100% Duty-Cycle Control UC3875/6/7/8 family and UC3879,it improveson that• 7-MHz Error Amplifier controller family with additional features such as
enhanced control logic, adaptive delay set, and• Operationto1 MHz
shutdown capability. Because the deviceis built using• Typical 5-mA Operating Currentat 500 kHz the BCDMOS process,it operates with dramatically• Very Low 150-μA Current During UVLO less supply current than it’s bipolar counterparts. The
UCC3895 operates witha maximum clock frequencyAPPLICATIONS of1 MHz. Phase-Shifted Full-Bridge Converters Off-Line, Telecom, Datacom and Servers Distributed Power Architecture High-Density Power Modules
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