The TPS24701DGKT is a compact, hot-swap controller and power management IC from Texas Instruments. It is designed to protect systems from inrush current and voltage transients during insertion and removal of circuit boards in live backplanes or other hot-swap applications. This device offers robust protection and control, ensuring reliable system operation and preventing damage to sensitive components.

Applications

• Hot-swap circuit boards
• Server backplanes
• Power distribution systems
• Telecom equipment
• Industrial automation

Features

• Hot-swap controller: Controls inrush current and voltage transients during insertion and removal of circuit boards.
• Adjustable current limit: Allows for customization of the maximum current allowed during startup and normal operation.
• Adjustable fault timer: Prevents nuisance tripping by allowing the current to exceed the limit for a short duration.
• Undervoltage lockout (UVLO): Prevents operation until the input voltage reaches a safe level.
• Overvoltage protection (OVP): Protects downstream circuitry from excessive voltage.
• Power-good output: Indicates when the output voltage is within the acceptable range.
• Small package size: Available in a compact 8-pin VSSOP package.

Benefits

• Protection against inrush current: Prevents damage to components caused by high inrush current during hot-swap events.
• Prevention of voltage transients: Protects sensitive circuitry from voltage spikes and dips.
• Improved system reliability: Ensures stable and reliable operation of the system.
• Simplified system design: Integrates multiple protection features into a single chip.
• Reduced board space: Small package size allows for compact system designs.

Additional Details

The TPS24701DGKT operates from a wide input voltage range, typically from 2.5V to 18V. It employs a soft-start function to limit the inrush current during power-up, preventing voltage droop and ensuring stable operation. The adjustable current limit allows designers to customize the maximum current based on the specific application requirements. The fault timer prevents nuisance tripping by allowing the current to exceed the limit for a short duration, accommodating transient load conditions. The undervoltage lockout (UVLO) feature prevents the device from turning on until the input voltage reaches a safe level, ensuring proper operation. The overvoltage protection (OVP) feature protects downstream circuitry from excessive voltage, preventing damage. The power-good output indicates when the output voltage is within the acceptable range, providing a signal for monitoring and control purposes. The TPS24701DGKT is available in a small 8-pin VSSOP package, making it suitable for space-constrained applications. It is widely used in server backplanes, power distribution systems, and other hot-swap applications where reliable protection and control are essential.