KA3525 PWM chip

The KA3525 is a versatile pulse-width modulation (PWM) controller designed for high-efficiency DC-DC converters, inverters, and other power management applications. It integrates multiple functions into a single chip, including a voltage reference, error amplifier, and PWM control circuitry. The KA3525 is known for its flexibility, high performance, and ease of use in designing various switching power supplies.

Key Features:

• Integrated PWM control for efficient power conversion
• Adjustable output voltage for customizable applications
• Built-in voltage reference for stable operation
• Error amplifier for precise regulation
• Adjustable dead-time control for improved performance
• High-speed switching capability for efficient operation
• Multiple protection features including overcurrent and thermal protection

Technical Specifications:

• Input Voltage Range: 7V to 40V
• Output Voltage Range: Adjustable, depending on external components
• Switching Frequency: Adjustable, typically up to 100 kHz
• Voltage Reference: 2.5V ±1% (typical)
• Error Amplifier Gain: 10 to 1000
• Dead-Time Control: Adjustable
• Thermal Shutdown: Integrated
• Overcurrent Protection: Integrated
• Package Type: Typically available in DIP-16 and surface-mount packages

Applications:

• DC-DC converters (buck, boost, and flyback)
• Power inverters for renewable energy systems
• Switching power supplies for electronic devices
• Battery chargers
• Motor control circuits
• High-efficiency power management systems

Usage:

1. Connect the input voltage to the appropriate pins of the KA3525, ensuring it is within the specified range.
2. Configure the output voltage using external resistors and feedback network as specified in the datasheet.
3. Set the switching frequency and dead-time control according to your application requirements.
4. Connect the load to the output and ensure proper cooling and heat dissipation.

Caution:

• Ensure that the input voltage is within the specified limits to avoid damage to the chip.
• Properly design the external components (e.g., inductors, capacitors) to achieve desired performance and stability.
• Implement thermal management and protection features to prevent overheating and ensure reliable operation.

Datasheet:
For detailed technical specifications, refer to the KA3525 Datasheet.