Overview
The UCC38C42PG4 is a BiCMOS low-power current-mode PWM (Pulse Width Modulation) controller produced by Unitrode, now part of Texas Instruments. This controller is designed for use in offline switch-mode power supplies and is suitable for a variety of topologies including boost, flyback, and forward converters. It is known for its high efficiency, low power consumption, and robust control features, making it a reliable choice for various power supply applications.
Key Specifications
| Category | DC DC Switching Controllers |
|---|---|
| Manufacturer | Unitrode (Texas Instruments) |
| Product Status | Active (Recommended for new designs) |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| Topology | Boost, Flyback, Forward Converter |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 9V ~ 18V |
| Frequency - Switching | Up to 1MHz |
| Duty Cycle (Max) | 96% |
| Synchronous Rectifier | No |
| Clock Sync | No |
| Control Features | Frequency Control |
| Operating Temperature | 0°C ~ 70°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- Low Power Consumption: The UCC38C42PG4 is designed to operate with low power, making it efficient for various applications.
- Current-Mode PWM Control: This controller uses current-mode PWM, which provides better control over the output and helps in achieving high efficiency.
- Multiple Topologies Support: It supports boost, flyback, and forward converter topologies, making it versatile for different power supply designs.
- High Switching Frequency: The controller can operate up to 1 MHz, allowing for smaller component sizes and higher power density.
- Robust Control Features: Includes features like frequency control and current limiting, which enhance the reliability and stability of the power supply.
- Rugged Operating Conditions: Operates over a temperature range of 0°C to 70°C, ensuring reliability in various environmental conditions.
Applications
- Offline Switch-Mode Power Supplies: Ideal for use in offline power supplies where high efficiency and reliability are crucial.
- DC-DC Converters: Suitable for boost, flyback, and forward DC-DC converter applications.
- Industrial Power Supplies: Used in industrial power supplies where robust control and high efficiency are required.
- Consumer Electronics: Can be used in various consumer electronics requiring efficient and reliable power management.
Q & A
- What is the UCC38C42PG4 used for?
The UCC38C42PG4 is used as a BiCMOS low-power current-mode PWM controller in offline switch-mode power supplies and DC-DC converters.
- What are the supported topologies for the UCC38C42PG4?
The UCC38C42PG4 supports boost, flyback, and forward converter topologies.
- What is the operating voltage range of the UCC38C42PG4?
The operating voltage range is 9V to 18V.
- What is the maximum switching frequency of the UCC38C42PG4?
The maximum switching frequency is up to 1 MHz.
- Is the UCC38C42PG4 RoHS compliant?
- What is the package type of the UCC38C42PG4?
The package type is 8-DIP (0.300", 7.62mm).
- What is the operating temperature range of the UCC38C42PG4?
The operating temperature range is 0°C to 70°C (TJ).
- Does the UCC38C42PG4 support synchronous rectification?
No, it does not support synchronous rectification.
- What control features does the UCC38C42PG4 offer?
The UCC38C42PG4 offers frequency control and current limiting features.
- Is the UCC38C42PG4 suitable for new designs?
