Imagens apenas para referência
UCC28251PWR
+Lista de MateriaisIC REG CTRLR MULT TOP 20TSSOP
-
FabricanteTexas Instruments
-
Peça do Fabricante #UCC28251PWR
-
Em Estoque5639
365 Garantia de Qualidade em 1 dia
7*24 Garantia de serviço em 24 horas
90-Garantia de pós-venda em 1 dia
Garantia de Produto Genuíno
Especificações
| Atributo | Valor |
| Part Status | Active |
| Output Type | PWM Signal |
| Function | Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 4.7V ~ 17V |
| Frequency - Switching | 42kHz ~ 945kHz |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Ramp, Soft Start |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
| Base Product Number | UCC28251 |
Visão Geral
Description
Key features of the UCC28251PWR include wide input voltage range, adjustable output voltage, and the ability to operate in continuous or discontinuous mode. It also offers synchronous rectification, which significantly improves efficiency in high-power applications. The IC incorporates advanced protection features such as over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown.
With its ability to drive external MOSFETs, the UCC28251PWR is suitable for various applications, including telecom, industrial, and consumer electronics. Its versatility and efficiency make it an ideal choice for designers looking to create robust power supply solutions.
Equivalent
Features
1. Current Mode Control: Offers improved transient response and stability.
2. Integrated Drivers: Built-in high and low-side gate drivers for efficient MOSFET control.
3. Voltage Regulation: Provides tight output voltage regulation with minimal variation.
4. Adjustable Frequency: Operation from 100 kHz to 1 MHz for design flexibility.
5. Soft Start: Built-in soft start feature to limit inrush current during startup.
6. Protection Features: Includes over-voltage, under-voltage, and over-current protection mechanisms.
7. Synchronization Capability: Can be synchronized with external clock signals for reduced noise and improved system performance.
8. Thermal Performance: Designed for high efficiency and thermal management, suitable for various power supply designs.
These features make the UCC28251PWR ideal for applications such as DC-DC converters, battery chargers, and other power management systems.
Pinout
Pin Count: 28
Key Functions:
- Phase Control: Dual-phase operation for enhanced efficiency and reduced ripple.
- VDD and GND: Power supply and ground connections.
- COMP: Compensation network connection for loop stability.
- CSN and CSP: Current sense inputs for overcurrent protection.
- FREQ: Frequency selection for controlling the switching frequency.
- SS: Soft start for a gradual voltage ramp-up.
- PWMOUT: Pulse width modulation output for driving external power switches.
- SYNC: Synchronization input for synchronizing multiple controllers.
- VCM: Voltage control modulation input for maintaining output voltage.
These features make the UCC28251PWR suitable for applications requiring high efficiency and precise voltage regulation in power supply designs.
Manufacturer
Application
1. Switching Power Supplies: For DC-DC converters and AC-DC power supplies in consumer electronics.
2. Industrial Power Supplies: Used in automation and control systems to provide reliable power.
3. Telecommunications: Power management for network equipment and base stations.
4. Renewable Energy Systems: Inverters for solar and wind energy applications.
5. Electric Vehicles: Battery management systems and onboard chargers.
Its efficiency and versatility make it suitable for various power management solutions.