The LM5026 PWM controller contains all of the features necessary to implement power
converters utilizing the active clamp and reset technique with current-mode control. With the
active clamp technique, higher efficiencies and greater power densities can be realized compared to
conventional catch winding or RDC clamp and reset techniques. Two control outputs are provided, the
main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be
configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a
compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive
characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range
of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage
lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay,
PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output
capability, precision reference, and thermal shutdown.
The LM5026 PWM controller contains all of the features necessary to implement power
converters utilizing the active clamp and reset technique with current-mode control. With the
active clamp technique, higher efficiencies and greater power densities can be realized compared to
conventional catch winding or RDC clamp and reset techniques. Two control outputs are provided, the
main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be
configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a
compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive
characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range
of 8 V to 100 V. Additional features include programmable maximum duty cycle, line undervoltage
lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay,
PWM slope compensation, soft-start, 1-MHz capable oscillator with synchronization input and output
capability, precision reference, and thermal shutdown.