LM5034 Datasheet | Texas Instruments

FEATURES - 2 Two Independent PWM Current Mode Controllers - Integrated High Voltage Startup Regulator - pound 2.5A Main Output Gate Drivers - Single Resistor Oscillator Setting to 2 MHz - Synchronizable Oscillator - Active Clamp Gate Driver for P-Channel MOSFETs - Adjustable Gate Drive Overlap Time - Programmable Maximum Duty Cycle - Maximum Duty Cycle Fold-Back at High Line Voltage - Adjustable Timer for Hiccup Mode Current Limiting - Integrated Slope pensation - Adjustable Line Under-Voltage Lockout - Independently Adjustable Soft-Start (Each Regulator) - Direct Interface with Opto-Coupler Transistor - Thermal Shutdown Typical Application Circuit APPLICATIONS - Telemunication Power Converters - Industrial Power Converters - +42V Automotive Systems DESCRIPTION The LM5034 dual current mode PWM controller contains all the features needed to control either two independent forward/active clamp dc/dc converters or a single high current converter prised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5034 includes a startup regulator that operates over a wide input range up to 100V and pound (bipolar + CMOS) gate drivers that provide a robust 2.5A peak sink current. The adjustable dead-time of the active clamp gate drivers and adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable restart delay, PWM slope pensation, soft-start, and a 2 MHz capable oscillator with synchronization capability. PACKAGE - TSSOP-20 36V to 75V Input Sync VPWR LM5034 CS1 UVLO RES OUT1 AC1 RT...