(Hong Kong)
Product Summary
The UCC3895DW is a BiCMOS advanced 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 UCC3895DW allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part can be used either as a voltage mode or current mode controller. Since it is built in BCDMOS, it operates with dramatically less supply current than it’s bipolar counterparts.
Parametrics
UCC3895DW absolute maximum ratings: (1)Supply Voltage (IDD < 10mA): 17V; (2)Supply Current: 30mA; (3)REF current: 15mA; (4)OUT Current: 100mA; (5)Analog inputs: -0.3V to REF+0.3V; (6)Power Dissipation at TA=+25°C (N Package): 1W; (7)Power Dissipation at TA=+25°C (D Package): 650mW; (8)Storage Temperature: -65°C to +150°C; (9)Junction Temperature: -55°C to +125°C.
Features
UCC3895DW features: (1)Programmable Output Turn-on Delay; (2)Adaptive Delay Set; (3)Bidirectional Oscillator Synchronization; (4)Capability for Voltage Mode or Current Mode Control; (5)Programmable Soft Start/Soft Stop and Chip Disable via a Single Pin; (6)0% to 100% Duty Cycle Control; (7)7MHz Error Amplifier; (8)Operation to 1MHz; (9)Low Active Current Consumption (5mA Typical @ 500kHz); (10)Very Low Current Consumption During Undervoltage Lock-out (150uA typical).
Diagrams
| Image | Part No | Mfg | Description |  |
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 UCC3895DW |
Texas Instruments |
Soft Switching PWM Controllers BiCMOS Advanced Phase Shift |
Data Sheet |
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UCC3895DWG4 |
Texas Instruments |
Soft Switching PWM Controllers BiCMOS Advanced Phase Shift |
Data Sheet |
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UCC3895DWTR |
Texas Instruments |
Soft Switching PWM Controllers BiCMOS Advanced Phase Shift |
Data Sheet |
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UCC3895DWTRG4 |
Texas Instruments |
Soft Switching PWM Controllers BiCMOS Advanced Phase Shift |
Data Sheet |
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