UC2879
FEATURES
- Programmable Output Turn On Delay; Zero Delay Available
- patible with Voltage Mode or Current Mode Topologies
- Practical Operation at Switching Frequencies to 300 k Hz
- 10-MHz Error Amplifier
- Pin Programmable Undervoltage Lockout
- Low Startup Current
- 150 µA
- Soft Start Control
- Outputs Active Low During UVLO
BLOCK DIAGRAM
DESCRIPTION
The UC3879 controls a bridge power stage by phase shifting the switching of one half-bridge with respect to the other. This allows constant frequency pulse width modulation in bination with resonant, zero-voltage switching for high efficiency performance. The UC3879 can be configured to provide control in either voltage mode or current mode operation, with overcurrent shutdown for fast fault protection.
Independently programmable time delays provide dead-time at the turn-on of each output stage, allowing time for each resonant switching interval.
Please be aware that an important notice concerning availability, standard warranty, and...
