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STMICROELECTRONICS L5991D PWM Power Controller
The primary controller equipped with PWM current-mode control is designed for off-line or DC-DC power supplies, supporting switching frequencies up to 1MHz. It features soft start, programmable duty cycle, and synchronization, providing high-current drive suitable for power MOSFETs. Its adjustable soft-start and standby functions optimize power efficiency, especially under light load conditions. Built with advanced BCD technology, it ensures reliable overcurrent detection, internal edge blanking, and adjustable frequency operation, making it ideal for high-performance power conversion applications.
STMICROELECTRONICS L5991D PWM Power Controller Specifications:
- Switching Frequency: Up to 1MHz
- Drive Capability: 1A suitable for Power MOSFET
- Start-up Current: Less than 120A
- Programmable Duty Cycle: Max 100% and 50% limit
- Soft Start: Programmable
- Overshoot Protection: Overcurrent fault detection with restart delay
- UVLO with hysteresis and internal leading edge blanking
- Synchronization: In/Out capability
- Package: DIP16, SO16
- Thermal Resistance Junction-Ambient (DIP16): 80°C/W, (SO16): 120°C/W
- Voltage Ratings: Voc from 12V to 20V, VCC supply maximum 25V
- Control Features: Fully latched PWM logic, double pulse suppression, disable function
- Temperature Range: -55°C to +150°C
- Input Voltage: 12V to 20V typical, startup threshold adjustable
- External Components: Reference voltage 5V, sense resistor, timing components for oscillator
- Isolation: Internal for MOSFET drive and sensing, separate ground references
Buy the STMicroelectronics L5991 – Reliable PWM Power Controller for Industrial Applications
Purchase your STMicroelectronics L5991 power controller now to access advanced PWM current-mode control features. This high-frequency device supports up to 1MHz switching, ideal for DC-DC converters and power supplies. It offers programmable soft start, programmable duty cycle, synchronization, and high-current MOSFET drive capabilities. Its overcurrent detection, internal blanking, and UVLO hysteresis ensure reliable operation under various load conditions. Enjoy seamless online ordering and improve your power management systems efficiently with this versatile, high-performance electronic control component.
Order your STMicroelectronics L5991 controller today and enhance your power supply design with a high-performance, flexible, and protected PWM control solution.
Frequently Asked Questions
Where can I buy STMICROELECTRONICS L5991D?
You can click on the BUY or RFQ button to purchase L5991D from an authorized STMICROELECTRONICS distributor.
How do I troubleshoot issues or seek technical support for part L5991D?
You can download the L5991D datasheet or visit the STMICROELECTRONICS website for support.
Who is the manufacturer of L5991D?
STMICROELECTRONICS