仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 7V ~ 40V |
| Frequency - Switching | 1kHz ~ 300kHz |
| Duty Cycle(Max) | 45% |
| Synchronous Rectifier | No |
| Clock Sync | No |
| Control Features | Dead Time Control, Frequency Control |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
概要
Description
The TL494CPWR is a versatile pulse-width modulation (PWM) controller integrated circuit (IC) used primarily in power supply applications. Developed by Texas Instruments, it is designed to regulate and control DC-DC converters and switching power supplies. The device integrates key features such as a reference voltage generator, two error amplifiers, an on-chip oscillator, a dead-time control comparator, and a PWM latch. This makes it suitable for a wide range of voltage regulation tasks.
The TL494CPWR can be configured for push-pull or single-ended output operation, making it adaptable for various circuit designs. Its internal clock and oscillator simplify synchronization, and it supports a wide range of input voltage levels. With its dead-time control feature, it helps prevent the power transistors from simultaneous conduction, thereby reducing power losses and enhancing efficiency. The IC is encapsulated in a small-outline package, making it suitable for compact designs. Overall, the TL494CPWR is valued for its reliability, versatility, and ease of use in designing efficient power management solutions.
The TL494CPWR can be configured for push-pull or single-ended output operation, making it adaptable for various circuit designs. Its internal clock and oscillator simplify synchronization, and it supports a wide range of input voltage levels. With its dead-time control feature, it helps prevent the power transistors from simultaneous conduction, thereby reducing power losses and enhancing efficiency. The IC is encapsulated in a small-outline package, making it suitable for compact designs. Overall, the TL494CPWR is valued for its reliability, versatility, and ease of use in designing efficient power management solutions.
Equivalent
The TL494CPWR chip is a PWM controller used in power supply applications. Equivalent products include the KA7500, SG3524, SG3525, and UC3842, which offer similar functions for voltage regulation and PWM control. While these alternatives may have slight differences in specifications or features, they can often serve as substitutes in similar circuit designs. Always verify specific requirements and compatibility before replacing components.
Features
The TL494CPWR is a pulse-width modulation (PWM) controller often used in power supply applications. Key features include:
1. PWM Control: Offers adjustable duty cycle and frequency for efficient power management.
2. Dual Output: Provides two output channels for push-pull or single-ended operation.
3. High Stability: Includes an internal oscillator for frequency stability.
4. Error Amplifiers: Features two error amplifiers for precise voltage regulation.
5. Dead-Time Control: Adjustable dead-time control for switch protection and efficiency optimization.
6. Undervoltage Lockout: Protects against operation under insufficient voltage conditions.
7. Temperature Range: Operates over a wide temperature range, typically from -40°C to 85°C.
8. Low Standby Current: Reduces power consumption when idle.
9. Compact Package: Available in a TSSOP package, supporting efficient space utilization in design.
These features make the TL494CPWR suitable for a variety of power management applications, including switch-mode power supplies, DC-DC converters, and inverters.
1. PWM Control: Offers adjustable duty cycle and frequency for efficient power management.
2. Dual Output: Provides two output channels for push-pull or single-ended operation.
3. High Stability: Includes an internal oscillator for frequency stability.
4. Error Amplifiers: Features two error amplifiers for precise voltage regulation.
5. Dead-Time Control: Adjustable dead-time control for switch protection and efficiency optimization.
6. Undervoltage Lockout: Protects against operation under insufficient voltage conditions.
7. Temperature Range: Operates over a wide temperature range, typically from -40°C to 85°C.
8. Low Standby Current: Reduces power consumption when idle.
9. Compact Package: Available in a TSSOP package, supporting efficient space utilization in design.
These features make the TL494CPWR suitable for a variety of power management applications, including switch-mode power supplies, DC-DC converters, and inverters.
Pinout
The TL494CPWR is a pulse-width modulation (PWM) control IC commonly used for controlling the operations of switching power supplies. It is a 16-pin device with the following pin functions:
1. Comp 1: Error amplifier 1 output.
2. Inv Input 1: Inverting input to error amplifier 1.
3. Non-inv Input 1: Non-inverting input to error amplifier 1.
4. Feedback: Feedback input for error amplifier.
5. C1: Dead-time control input.
6. C2: Dead-time control input.
7. GND: Ground.
8. C3: Dead-time control input.
9. C4: Dead-time control input.
10. C5: Dead-time control input.
11. REF Out: Reference voltage output.
12. OSC Out: Oscillator output.
13. Vc: Control voltage.
14. C6: Dead-time control input.
15. C7: Dead-time control input.
16. Vcc: Supply voltage.
The IC is designed to provide control over the output voltage and current by adjusting the duty cycle of the PWM signal, thus making it suitable for power supply regulation and other applications requiring precise PWM control.
1. Comp 1: Error amplifier 1 output.
2. Inv Input 1: Inverting input to error amplifier 1.
3. Non-inv Input 1: Non-inverting input to error amplifier 1.
4. Feedback: Feedback input for error amplifier.
5. C1: Dead-time control input.
6. C2: Dead-time control input.
7. GND: Ground.
8. C3: Dead-time control input.
9. C4: Dead-time control input.
10. C5: Dead-time control input.
11. REF Out: Reference voltage output.
12. OSC Out: Oscillator output.
13. Vc: Control voltage.
14. C6: Dead-time control input.
15. C7: Dead-time control input.
16. Vcc: Supply voltage.
The IC is designed to provide control over the output voltage and current by adjusting the duty cycle of the PWM signal, thus making it suitable for power supply regulation and other applications requiring precise PWM control.
Manufacturer
The TL494CPWR is manufactured by Texas Instruments, a technology company based in the United States. Founded in 1930, Texas Instruments is known for designing and manufacturing semiconductors and integrated circuits, which are used in a wide variety of electronic systems. The company is a leader in the electronics industry, with a product lineup that includes embedded processors, digital signal processors, and analog devices. Texas Instruments serves various markets, including industrial, automotive, personal electronics, and communications. The TL494CPWR specifically is a PWM (pulse-width modulation) controller used for power supply control and management applications.
Application
The TL494CPWR is a versatile PWM (pulse-width modulation) controller commonly used in power electronics applications. Key application areas include:
1. Switch-Mode Power Supplies (SMPS): Used for voltage regulation and improving efficiency.
2. DC-DC Converters: Facilitates efficient power conversion between different voltage levels.
3. Battery Chargers: Manages charging cycles and ensures optimal battery performance.
4. Motor Control: Offers precise control over motor speed and torque.
5. Inverters: Converts DC to AC power, useful in solar power systems.
6. Voltage Regulation: Maintains consistent output voltage under varying load conditions.
Its flexibility, reliability, and efficiency make it suitable for a wide range of electronic and industrial applications.
1. Switch-Mode Power Supplies (SMPS): Used for voltage regulation and improving efficiency.
2. DC-DC Converters: Facilitates efficient power conversion between different voltage levels.
3. Battery Chargers: Manages charging cycles and ensures optimal battery performance.
4. Motor Control: Offers precise control over motor speed and torque.
5. Inverters: Converts DC to AC power, useful in solar power systems.
6. Voltage Regulation: Maintains consistent output voltage under varying load conditions.
Its flexibility, reliability, and efficiency make it suitable for a wide range of electronic and industrial applications.
Package
The TL494CPWR is a pulse-width modulation (PWM) controller IC commonly housed in a 16-pin TSSOP (Thin Shrink Small Outline Package) package type.
