Linear Technology LT1952
The LT1952 provides synchronous rectifier control, resulting in extremely high efficiency. This allows a single MOSFET on the primary side to reliably run at greater than 50% duty cycle for high MOSFET, transformer and rectifier utilization. The LT1952 includes soft-start for controlled exit from shutdown, overcurrent conditions and undervoltage lockout.| Part No. | LT1952 |
|---|---|
| Datasheet | LT1952 Download |
| Manufacturer |  Linear Technology |
| Description | Single Switch Synchronous Forward Controller |
| Buy | Stock & Price |
FEATURES
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● DESCRIPTIO Synchronous Rectifier Control for High Efficiency Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Low Current Start-Up True PWM Soft-Start Low Stress Short Circuit Protection Precision 100mV Current Limit Threshold Adjustable Delay for Synchronous Timing Accurate Shutdown Threshold with Programmable Hysteresis Programmable Slope Compensation Programmable Leading Edge Blanking Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock up to 1.5
● fOSC Internal 1.23V Reference 2.5V External Reference Current Mode Control Small 16-Pin SSOP Package U APPLICATIO S
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● Telecommunications Power Supplies Industrial and Distributed Power Isolated and Non-Isolated DC/DC Converters The LT®1952 is a current mode PWM controller optimized to control the forward converter topology, using one primary MOSFET. A programmable Volt-Second clamp provides a safeguard for transformer reset that prevents saturation. A precision 100mV current limit threshold, independent of duty cycle, combines with soft-start to provide hiccup short circuit protection.
