Overview
The TL594CDR is a high-performance, fixed-frequency Pulse-Width-Modulation (PWM) controller IC produced by Texas Instruments. This device is designed primarily for power-supply control and offers the flexibility to tailor the power-supply control circuitry to specific applications. The TL594CDR incorporates all the functions required for constructing a PWM control circuit on a single chip, making it a versatile component for various power conversion needs, including step-up, step-down, and inverting configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 16 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Input Voltage Range | 7 to 40 | V |
| Output Current Capability | 200 mA (sink or source) | - |
| Oscillator Frequency | Adjustable via RT and CT pins | - |
| Internal Regulator | 5 V with 1% precision | - |
| Undervoltage Lockout (UVLO) | Approximately 6 V threshold | - |
Key Features
- Complete PWM Power-Control Circuitry: Includes all necessary functions for PWM control on a single chip.
- Uncommitted Outputs: Capable of 200-mA sink or source current, with options for common-emitter or emitter-follower output capability.
- Output Control: Selects single-ended or push-pull operation, with internal circuitry preventing double pulses during push-pull operation.
- Variable Dead Time: Provides control over the total range of dead time.
- Internal Regulator: A stable 5-V reference supply with 1% precision.
- Circuit Architecture: Allows easy synchronization and is suitable for synchronous multiple-rail power supplies.
- Undervoltage Lockout (UVLO): Locks the outputs off until the internal circuitry is operational).
Applications
The TL594CDR is primarily used in power-supply control applications, including:
- Step-up, step-down, and inverting power conversion configurations.
- Synchronous multiple-rail power supplies).
- Various power-supply control circuits where flexibility and precision are required).
Q & A
- What is the primary application of the TL594CDR?
The TL594CDR is primarily designed for power-supply control applications).
- What are the key features of the TL594CDR?
The TL594CDR includes complete PWM power-control circuitry, uncommitted outputs, variable dead time, an internal 5-V regulator, and undervoltage lockout among other features).
- What is the operating temperature range of the TL594CDR?
The operating temperature range is from 0°C to 70°C).
- What is the input voltage range for the TL594CDR?
The input voltage range is from 7 V to 40 V).
- How is the oscillator frequency adjusted in the TL594CDR?
The oscillator frequency is adjustable via the RT and CT pins).
- What is the precision of the internal 5-V regulator in the TL594CDR?
The internal 5-V regulator has a precision of 1%).
- Does the TL594CDR support push-pull and single-ended output operations?
- What is the purpose of the undervoltage lockout (UVLO) in the TL594CDR?
The UVLO locks the outputs off until the internal circuitry is operational).
- In what packages is the TL594CDR available?
The TL594CDR is available in SOIC, SO, PDIP, and TSSOP packages).
- Can the TL594CDR be used in synchronous multiple-rail power supplies?
