National Semiconductor Introduces Industry's First Fully Featured PWM Controller for Power Systems Using Intermediate Bus Architecture
National Semiconductor » LM5033, LM5100
LM5033's High Integration Gives Designers Flexibility to Implement Half-Bridge, Full-Bridge and Push-Pull IBA Converter Topologies
May 25, 2004 - National Semiconductor Corporation introduced the LM5033, the industry's first fully featured 100V DC-DC PWM (pulse width modulation) controller that meets the challenging specifications of the Intermediate Bus Architecture (IBA). This recently introduced architecture controls the multiple low-voltage power supply rails in complex power systems using digital ASICs, DSPs and FPGAs that are found in telecommunications, automotive and industrial applications.
As designers continue to enhance converter performance and power density, traditional power conversion techniques are giving way to new distributed power architectures such as the IBA. The IBA consists of an isolated bus converter powered from a higher-voltage distributed power rail that produces an "intermediate" lower voltage distribution bus, typically 8 V to 14 V, to feed multiple non-isolated regulators at the point of load. Since the IBA uses two stages of power conversion, the bus converter and point-of-load regulators must be more efficient and fit in a smaller board area to offer a compelling alternative to single-stage distributed power systems.
To address these challenges, National designed the LM5033 PWM controller with the flexibility to be used stand-alone in a push-pull bus converter or paired with one or two of National's LM5100 drivers in a half- or full-bridge converter design. This flexibility allows designers to produce a family of bus converters that deliver a wide range of output power levels for telecom and computing power systems.
About the LM5033
Pricing and Availability
PCB Pricing: https://jlcpcb.com/quote
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