1FEATURES
2• Internal Start-up Bias Regulator
• Programmable Line Under-Voltage Lockout
(UVLO) with Adjustable Hysteresis
• Current Mode Control
• Internal Error Amplifier with Reference
• Dual Mode Over-Current Protection
• Leading Edge Blanking
• Programmable Push-Pull Overlap or Dead
Time
• Internal 1.5A Push-Pull Gate Drivers
• Programmable Soft-start
• Programmable Oscillator with Sync Capability
• Precision Reference
• Thermal Shutdown

APPLICATIONS
• Telecommunication Power Converters
• Industrial Power Converters
• Multi-Output Power Converters
• +42V Automotive Systems

PACKAGES
• TSSOP-16
• WSON-16 (5x5 mm) Thermally Enhanced

DESCRIPTION
The LM5041 PWM controller contains all of the
features necessary to implement either current-fed or
voltage-fed push-pull or bridge power converters.
These “Cascaded” topologies are well suited for
multiple output and higher power applications. The
LM5041’s four control outputs include: the buck stage
controls (HD and LD) and the push-pull control
outputs (PUSH and PULL). Push-pull outputs are
driven at 50% nominal duty cycle at one half of the
switching frequency of the buck stage and can be
configured for either a specified overlap time (for
current-fed applications) or a specified both-off time
(for voltage-fed applications). Push-pull stage
MOSFETs can be driven directly from the internal
gate drivers while the buck stage requires an external
driver such as the LM5102. The LM5041 includes a high-voltage start-up regulator that operates over a
wide input range of 15V to 100V. The PWM controller
is designed for high-speed capability including an
oscillator frequency range up to 1 MHz and total
propagation delays of less than 100ns. Additional
features include: line Under-Voltage Lockout (UVLO),
soft-start, an error amplifier, precision voltage
reference, and thermal shutdown.