A4988 Stepper Motor Driver IC SMD Package

A4988 Stepper Motor Driver IC SMD Package 

The IR1150S is a high-performance One-Cycle Control (OCC) Power Factor Correction (PFC) controller IC designed to achieve near-unity power factor and low total harmonic distortion (THD) in AC-DC power supplies. It uses advanced one-cycle control technology to regulate the input current waveform, ensuring it follows the input voltage accurately without the need for complex multiplier circuits.

The IC integrates essential PFC control functions such as a precision error amplifier, current sensing, PWM generation, and protection circuitry. The IR1150S SMD package makes it suitable for compact, high-efficiency power supply designs used in industrial, telecom, and consumer electronics.

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Features

• One-Cycle Control (OCC) PFC architecture
• Achieves near-unity power factor
• Low total harmonic distortion (THD)
• Fixed-frequency PWM operation
• No input voltage sensing or multiplier required
• Wide AC input voltage range support
• Fast transient response
• Built-in current limiting and protection features
• High noise immunity
• Optimized for boost PFC converter topology
• Surface-mount (SMD) package for compact PCB designs

Applications

• Active Power Factor Correction (PFC) circuits
• AC-DC switching power supplies
• Telecom and server power supplies
• Industrial power systems
• LED power supplies with PFC
• Consumer electronics power adapters
• UPS and inverter front-end PFC stages