Overview
The TL598CNG4 is a versatile pulse-width-modulated (PWM) power-control integrated circuit manufactured by Texas Instruments. This device is designed primarily for power-supply control and offers a comprehensive set of features that allow systems engineers to tailor power-supply control circuits to specific applications. The TL598CNG4 integrates all necessary functions for constructing PWM controlled systems on a single chip, making it a robust solution for various power supply designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Package | 16-DIP (0.300", 7.62mm) | |
| 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) | 7 V ~ 40 V | |
| Frequency - Switching | 100kHz | |
| Duty Cycle (Max) | 45% | |
| Synchronous Rectifier | Yes | |
| Clock Sync | No | |
| Operating Temperature | 0°C ~ 70°C (TA) | |
| Control Features | Dead Time Control, Frequency Control |
Key Features
- Complete PWM Power-Control Function: The TL598CNG4 includes all necessary functions for PWM controlled systems, such as error amplifiers, an internal oscillator, dead-time control comparator, and output control circuits.
- Totem-Pole Outputs: Provides exceptional rise- and fall-time performance for power FET control, with each output capable of sinking or sourcing 200 mA of current.
- Output Control: Allows selection of either push-pull or parallel operation, with circuit architecture preventing double pulsing during push-pull operation.
- Internal Regulator: A stable 5-V reference supply with 1% tolerance, ensuring reliable operation.
- Undervoltage Lockout: Protects the device from low VCC conditions, enhancing reliability and safety.
- Output Current-Limiting Protection: Built-in protection to prevent excessive current draw.
- Separate Power and Signal Grounds: Reduces errors caused by high current-induced voltage drops and common-mode noise.
Applications
The TL598CNG4 is versatile and can be used in a variety of power supply control applications, including:
- Switchmode Power Supplies: Ideal for buck, boost, flyback, forward converters, full-bridge, half-bridge, and push-pull configurations.
- DC-DC Converters: Suitable for designing efficient DC-DC conversion circuits with precise control over output voltage and current).
- Power Management Systems: Can be integrated into complex power management systems requiring high precision and reliability).
Q & A
- What is the primary function of the TL598CNG4?
The TL598CNG4 is a pulse-width-modulated (PWM) power-control integrated circuit designed primarily for power-supply control.
- What is the package type of the TL598CNG4?
The TL598CNG4 comes in a 16-DIP (0.300", 7.62mm) package.
- What are the output configurations available on the TL598CNG4?
The device supports push-pull or parallel operation.
- What is the switching frequency of the TL598CNG4?
The switching frequency is 100 kHz.
- Does the TL598CNG4 have built-in protection features?
Yes, it includes undervoltage lockout and output current-limiting protection.
- What is the operating temperature range of the TL598CNG4?
The operating temperature range is 0°C to 70°C.
- Can the TL598CNG4 be used in synchronous multiple supply operations?
Yes, by connecting RT to the reference output and providing a sawtooth input to CT.
- What are the key features of the totem-pole outputs on the TL598CNG4?
The totem-pole outputs provide exceptional rise- and fall-time performance and can sink or source 200 mA of current.
- Does the TL598CNG4 have an internal regulator?
Yes, it includes a stable 5-V reference supply with 1% tolerance.
- What are some common applications of the TL598CNG4?
It is commonly used in switchmode power supplies, DC-DC converters, and power management systems.
