LM5041ASDX

• Internally start bias regulator
• Programmable input undervoltage lockout (UVLO) with adjustable hysteresis
• Current mode control
• Reference for internal error amplifiers
• Cycle-by-cycle overcurrent protection
• Cutting-edge erasing
• Programmable push-pull or overlapping dead time
• Internal 1.5A sliding door driver
• Programmable soft start
• Programmable oscillator synchronization function
• Precision benchmarks
• Thermal shutdown

illustrate

The LM5041B PWM controller includes functions such as current or voltage feed, push-pull or bridge power converter. These "cascading" topologies are ideal for applications with multiple outputs and higher power. The LM5041B includes the following four control outputs: buck stage control (HD and LD) and push-pull control outputs (PUSH and PULL). The push-pull output drive has a duty cycle of 50% nominally half the frequency of step-down switching in one of the stages and can be used in any guaranteed overlap time (current feed application) or guaranteed non-overlap time configuration (voltage-fed applications). Push-pull stage MOSFETs The LM5102 can be driven directly from the internal gate driver while the step-down phase requires an external drive. The LM5041B includes a high-voltage start-up regulator that operates at 100V over a wide input range of 15V. PWM controllers are designed for high-speed capabilities, including oscillators with a frequency range of up to 1 MHz and a total transmission delay of less than 100 milliseconds. Other features include line undervoltage lockout （UVLO） , soft start, error amplifier, high-precision voltage reference, and overheat shutdown.

The differences between the LM5041, LM5041A and LM5041B are as follows: In the LM5041A and LM5041B versions, the hiccup mode overcurrent protection is not employed and the VCC bias regulator is not disabled by the SS pin for the low state state. In LM5041B version, the controller is disabled when the buck phase of the drive, whether high or low, is forced to a low state. In the LM5041 and LM5041B versions, the buck controller is disabled by a stage in a low state UVLO pin or SS pin is in a low state. Also in LM5041B version, the REF-pin 5V regulator is made up of an undisabled voltage UVLO The pin is in a low state.

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• Communication power converters
• Industrial power converters
• Multi-output power converters