National Semiconductor Introduces the LM5045 and LM5046, the Industry’s First Full-Bridge PWM Controllers with Integrated MOSFET Gate Drivers
National Semiconductor introduced the industry’s first full-bridge pulse width modulation (PWM) controllers to integrate all four primary-side bridge MOSFET gate drivers. The LM5045 and LM5046 are well-suited for delivering higher efficiency and higher power density in quarter-brick and eighth-brick power modules used in a variety of high input voltage communications infrastructure applications.
The LM5045 and LM5046 PWM controllers ease the design of full-bridge topology-based power converters into small form factor power supplies by reducing the number of external power components needed with existing full-bridge solutions.
The LM5045 PWM controller contains all of the features necessary to implement a conventional full-bridge topology power converter using either current mode or voltage mode control. For applications requiring zero-voltage switching (ZVS) to minimize electro-magnetic interference (EMI) due to switching noise, the LM5046 PWM controller contains all the features necessary to implement a phase-shifted full-bridge topology.
National’s new LM5045 and LM5046, together with secondary side FET drivers such as the LM5110, LM5111 and LM5112, provide a complete controller solution to implement a highly efficient, small form factor full-bridge power converter.
The LM5045 and LM5046 PWM controllers are available now and offered in 28-pin LLP and thermally-enhanced TSSOP packages. Priced in quantities of 1,000, the LM5045 is $2.25 and the LM5046 is $2.45.
Industry’s First Full-Bridge PWM Controllers with integrated MOSFET Gate Drivers (Photo from National Semiconductor Website)
More information about PWM Controllers can be found at National Semiconductor Website