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UCC2946PWTRG4
Overview
Category: Integrated Circuits (ICs)
Use: Voltage Mode PWM Controller
Characteristics: - High-performance voltage mode pulse width modulation (PWM) controller - Designed for use in power supply applications - Provides precise control of the output voltage and current
Package: TSSOP-16
Essence: UCC2946PWTRG4 is a voltage mode PWM controller that offers advanced features for efficient power supply designs.
Packaging/Quantity: The UCC2946PWTRG4 is available in a TSSOP-16 package. It is typically sold in reels of 2500 units.
Specifications
- Input Voltage Range: 4.5V to 15V
- Output Voltage Range: 0.8V to 5.5V
- Operating Temperature Range: -40°C to 85°C
- Switching Frequency: Up to 1MHz
- Maximum Duty Cycle: 100%
- Output Current: Up to 1A
Detailed Pin Configuration
The UCC2946PWTRG4 has the following pin configuration:
- COMP: Compensation pin for external compensation network.
- FB: Feedback pin for sensing the output voltage.
- CS: Current sense pin for monitoring the output current.
- GND: Ground reference for the IC.
- VREF: Reference voltage output for external components.
- RT/CT: Timing resistor/capacitor connection pins.
- SS/TR: Soft-start and tracking control pin.
- VCC: Power supply input for the IC.
- DRVH: High-side gate driver output.
- DRVL: Low-side gate driver output.
- SYNC: Synchronization input for multiple ICs.
- EN: Enable pin for turning on/off the IC.
- UVLO: Undervoltage lockout pin for protection.
- OVP: Overvoltage protection pin.
- PGND: Power ground reference for the IC.
- VSENSE: Voltage sense input for monitoring the output voltage.
Functional Features
- Voltage mode control with adjustable frequency and duty cycle.
- Soft-start function for controlled startup of the power supply.
- Overvoltage protection (OVP) to prevent damage to the load.
- Undervoltage lockout (UVLO) for reliable operation under low voltage conditions.
- Synchronization capability for parallel operation of multiple ICs.
- Current sense input for accurate monitoring of the output current.
Advantages and Disadvantages
Advantages: - High-performance PWM controller for precise voltage regulation. - Wide input and output voltage ranges for versatile applications. - Compact TSSOP-16 package for space-constrained designs. - Adjustable frequency and duty cycle for flexible power supply designs. - Comprehensive protection features for enhanced reliability.
Disadvantages: - Limited maximum output current of 1A. - Requires external compensation network for stability.
Working Principles
The UCC2946PWTRG4 operates based on the voltage mode control technique. It compares the feedback voltage from the FB pin with a reference voltage to generate an error signal. This error signal is then amplified and used to control the duty cycle of the PWM signal, which regulates the output voltage. The soft-start function gradually increases the duty cycle during startup to prevent excessive inrush current. The UVLO and OVP features protect the power supply and load from voltage-related issues.
Detailed Application Field Plans
The UCC2946PWTRG4 is commonly used in various power supply applications, including: - Switching power supplies - DC-DC converters - Battery chargers - LED drivers - Industrial control systems
Detailed and Complete Alternative Models
- UCC28070: Voltage mode PWM controller with integrated high-voltage startup circuit.
- UC3843: Current mode PWM controller with adjustable frequency and duty cycle.
- LT1241: High-performance voltage mode PWM controller with wide input voltage range.
These alternative models offer similar functionality and can be considered as substitutes for the UCC2946PWTRG4 in different applications.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de UCC2946PWTRG4 en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of UCC2946PWTRG4 in technical solutions:
Q: What is UCC2946PWTRG4? A: UCC2946PWTRG4 is a voltage supervisor and reset IC manufactured by Texas Instruments.
Q: What is the purpose of UCC2946PWTRG4? A: UCC2946PWTRG4 is used to monitor the voltage level of a power supply and generate a reset signal when the voltage falls below a certain threshold.
Q: What is the operating voltage range of UCC2946PWTRG4? A: The operating voltage range of UCC2946PWTRG4 is typically between 1.8V and 5.5V.
Q: How does UCC2946PWTRG4 generate a reset signal? A: UCC2946PWTRG4 compares the input voltage with a reference voltage and generates a reset signal when the input voltage falls below the reference voltage.
Q: Can UCC2946PWTRG4 be used in battery-powered applications? A: Yes, UCC2946PWTRG4 can be used in battery-powered applications as it has a low quiescent current and operates at low voltages.
Q: What is the output type of UCC2946PWTRG4? A: UCC2946PWTRG4 has an open-drain output, which means it can sink current but cannot source current.
Q: What is the typical reset threshold voltage of UCC2946PWTRG4? A: The typical reset threshold voltage of UCC2946PWTRG4 is 4.65V.
Q: Can UCC2946PWTRG4 be used in automotive applications? A: Yes, UCC2946PWTRG4 is suitable for automotive applications as it has a wide operating temperature range and meets automotive standards.
Q: Does UCC2946PWTRG4 have any built-in delay for the reset signal? A: Yes, UCC2946PWTRG4 has a fixed delay of approximately 200ms to ensure stable power supply before releasing the reset signal.
Q: What is the package type of UCC2946PWTRG4? A: UCC2946PWTRG4 is available in a small SOT-23-5 package, which is commonly used for surface-mount applications.
Please note that these answers are general and may vary depending on the specific datasheet and application requirements.