• High-Voltage (100-V) Start-up Regulator
• Alternating Outputs for Double-Ended Topologies
• Current-mode or Feed-forward Voltage-mode Control
• Programmable Maximum Duty Cycle Limit
• 2% Feedback Reference Accuracy
• High Gain-bandwidth Error Amplifier
• Programmable Line Undervoltage Lockout (UVLO) with Adjustable Hysteresis
• Versatile Dual Mode Overcurrent Protection with Hiccup Delay Timer
• Programmable Soft-start Time
• Precision 5-V Reference Output
• Current Sense Leading Edge Blanking
• Resistor Programmed 2-MHz Capable Oscillator
• Oscillator Synchronization Capability with Low-Frequency Lockout Protection

• Telecom Power Converters
• Industrial Power Converters

The LM5037 PWM controller contains all the features necessary to implement balanced double-ended power converter topologies, such as push-pull, half-bridge and full-bridge. These double-ended topologies allow for higher efficiencies and greater power densities compared to common single-ended topologies such as the flyback and forward. The device can be configured for either voltage mode or current mode control with minimum external components. Two alternating gate drive outputs are provided, each capable of 1.2-A peak output current. The device can be configured to operate directly from the input voltage rail over a wide range of 13 V to 100V.

Additional features include programmable maximum duty cycle limit, line undervoltage lockout, cycle-by-cycle current limit and a hiccup mode fault protection with adjustable timeout delay, soft-start and a 2 MHz capable oscillator with synchronization capability, precision reference and thermal shutdown.