SM74202 Datasheet | Texas Instruments

ATURES - 2 Renewable Energy Grade - Internal Start-up Bias Regulator - Error Amplifier - Precision Voltage Reference - Programmable Softstart - 1A Peak Gate Driver - Maximum Duty Cycle Limiting (50%) - Programmable Line Under Voltage Lockout (UVLO) with Adjustable Hysteresis - Cycle-by-Cycle Over-Current Protection - Programmable Oscillator Frequency with Synchronization Capability - Current Sense Leading Edge Blanking - Thermal Shutdown Protection APPLICATIONS - Photovoltaic - Telemunication Power Converters - Industrial Power Converters - +42V Automotive Systems DESCRIPTION The SM74202 high voltage pulse-width-modulation (PWM) controller contains all of the Features needed to implement single ended primary power converter topologies. Output voltage regulation is based on current-mode control, which eases the design of loop pensation while providing inherent line feedforward. The SM74202 includes a high-voltage startup regulator that operates over a wide input range up to 100V. The PWM controller is designed for high speed capability including an oscillator frequency range to 1MHz and total propagation delays less than 100ns. Additional Features include an error amplifier, precision reference, line under-voltage lockout, cycleby-cycle current limit, slope pensation, softstart, oscillator synchronization capability and thermal shutdown. The controller is available in the MSOP-10 package. Typical Application Circuit VOUT UVLO RT/ SYNC OUT CS FB P PENSATION Figure 1. Non-Isolated Flyback Converter Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard...