UCC28517DW

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance, low-power, voltage mode synchronous PWM controller
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Control and regulate power in various electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 6V
• Maximum Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C
• Number of Pins: 16
• Supply Current: 2.5mA

Detailed Pin Configuration

1. COMP: Compensation pin
2. FB: Feedback pin
3. CS: Current sense pin
4. SS/TR: Soft-start/Tracking pin
5. RT/CLK: Oscillator timing resistor/capacitor pin
6. GND: Ground pin
7. VDD: Power supply input pin
8. EN/UVLO: Enable/Undervoltage lockout pin
9. PGND: Power ground pin
10. BOOT: Bootstrap capacitor pin
11. HO: High-side gate driver output pin
12. LO: Low-side gate driver output pin
13. SW: Switch node connection pin
14. NC: No connect pin
15. NC: No connect pin
16. VREF: Reference voltage output pin

Functional Features

• Voltage mode control with adjustable frequency and duty cycle
• Adaptive dead-time control for improved efficiency
• Overcurrent protection with adjustable threshold
• Programmable soft-start and tracking function
• Undervoltage lockout for reliable operation
• Error amplifier with high gain and bandwidth

Advantages and Disadvantages

Advantages: - High-performance power management solution - Wide input and output voltage range - Flexible frequency and duty cycle control - Efficient adaptive dead-time control - Comprehensive protection features

Disadvantages: - Limited maximum switching frequency - Requires external components for operation - Relatively high supply current

Working Principles

The UCC28517DW is a voltage mode synchronous PWM controller designed for power management applications. It operates by regulating the duty cycle of the output waveform based on the feedback received from the load. By adjusting the duty cycle, the controller controls the amount of power delivered to the load.

The device utilizes an error amplifier to compare the actual output voltage with the desired reference voltage. Any deviation between the two voltages is amplified and used to adjust the duty cycle accordingly. This feedback loop ensures that the output voltage remains stable and within the desired range.

Additionally, the UCC28517DW incorporates various protection features such as overcurrent protection and undervoltage lockout. These features safeguard the system from potential faults and ensure reliable operation.

Detailed Application Field Plans

The UCC28517DW can be applied in various power management applications, including but not limited to:

1. DC-DC converters
2. Switching power supplies
3. Battery charging systems
4. LED lighting drivers
5. Industrial automation equipment
6. Telecommunication devices
7. Automotive electronics

Detailed and Complete Alternative Models

1. UCC28516DW: Similar specifications and features, different pin configuration
2. UCC28518DW: Higher maximum switching frequency, otherwise similar specifications
3. UCC28519DW: Lower supply current, otherwise similar specifications

These alternative models provide similar functionality and can be considered as substitutes for the UCC28517DW depending on specific requirements and constraints.

In conclusion, the UCC28517DW is a high-performance voltage mode synchronous PWM controller used for power management in various electronic devices. Its flexible control features, comprehensive protection mechanisms, and wide application range make it a reliable choice for power management applications.

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