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Description

The LM5033 High Voltage PWM controller contains all the features needed to implement Push-Pull, Half-Bridge, and Full-Bridge topologies. Applications include closed loop voltage mode converters with a highly regulated output voltage, or an open loop "DC transformer" such as an Intermediate Bus Converter (IBC) with an efficiency >95%. Two alternating gate driver outputs with a specified deadtime are provided.

The IC includes a start-up regulator that operates over a wide input range of 15V to 100V. Additional features include: precision voltage reference output, current limit detection, remote shutdown, softstart, sync capability and thermal shutdown. This high speed IC has total propagation delays less than 100 ns and a 1MHz capable oscillator.

Features

• Internal High Voltage (100V) Start-Up Regulator
• Single Resistor Oscillator Setting
• Synchronizable
• Precision Reference Output
• Adjustable Soft-Start
• Over-Current Protection
• Direct Optocoupler Interface
• 1.5A Peak Gate Drivers
• Thermal Shutdown