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UCC3895 Series

Phase-shifted full-bridge controller with enhanced control logic, 0°C to 70°C

Manufacturer: Texas Instruments

Catalog(7 parts)

PartFrequency - Switching▲▼Output Phases▲▼Number of Outputs▲▼Supplier Device PackageClock Sync▲▼Operating Temperature▲▼Operating Temperature▲▼TopologyDuty Cycle (Max)▲▼Package / Case▲▼Package / Case▲▼Package / CaseControl FeaturesVoltage - Supply (Vcc/Vdd)▲▼Voltage - Supply (Vcc/Vdd)▲▼Output ConfigurationMounting TypePackage / Case▲▼
Texas Instruments
UCC3895PWTR
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-TSSOP
1000000 Hz
1 ul
1 ul
20-TSSOP
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.004394200164824724 m
0.004399999976158142 m
20-TSSOP
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount
Texas Instruments
UCC3895DW
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-SOIC
1000000 Hz
1 ul
1 ul
20-SOIC
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount
Texas Instruments
UCC3895N
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-PDIP
1000000 Hz
1 ul
1 ul
20-PDIP
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.007619999814778566 m
20-DIP
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Through Hole
0.007619999814778566 m
Texas Instruments
UCC3895DWG4
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-SOIC
1000000 Hz
1 ul
1 ul
20-SOIC
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount
Texas Instruments
UCC3895DWTRG4
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-SOIC
1000000 Hz
1 ul
1 ul
20-SOIC
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount
Texas Instruments
UCC3895DWTR
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-SOIC
1000000 Hz
1 ul
1 ul
20-SOIC
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
0.007493000011891127 m, 0.007499999832361937 m
20-SOIC
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount
Texas Instruments
UCC3895Q
Phase-Shifted Full-Bridge Regulator Positive Output DC-DC Controller IC 20-PLCC (9x9)
1000000 Hz
1 ul
1 ul
20-PLCC (9x9)
70 °C
0 °C
Phase-Shifted Full-Bridge
1 ul
20-LCC (J-Lead)
Frequency Control, Soft Start, Sync
10 V
16.5 V
Positive
Surface Mount

Key Features

• Programmable-output turnon delayAdaptive delay setBidirectional oscillator synchronizationVoltage-mode, peak current-mode, or average current-mode controlProgrammable soft start, soft stop, and chip disable via a single pin0% to 100% duty-cycle control7-MHz error amplifierOperation to 1 MHzTypical 5-mA operating current at 500 kHzVery low 150-µA current during UVLOProgrammable-output turnon delayAdaptive delay setBidirectional oscillator synchronizationVoltage-mode, peak current-mode, or average current-mode controlProgrammable soft start, soft stop, and chip disable via a single pin0% to 100% duty-cycle control7-MHz error amplifierOperation to 1 MHzTypical 5-mA operating current at 500 kHzVery low 150-µA current during UVLO

Description

AI
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. 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.