Kinetic Technologies™ Introduces 5A eFuse for Reliable 5V and 12V Power-Rail Protection
Kinetic Technologies, a Cyient Semiconductors company and a leader in high-performance analog and mixed-signal semiconductor solutions, has introduced the KTS1630 device. This highly integrated 5A eFuse is engineered to enhance the safety, reliability, and power efficiency of consumer and industrial systems operating from 5V and 12V power rails.
Modern electronic systems demand increasingly robust protection as power density rises and designs become smaller. The KTS1630 addresses this need by protecting sensitive downstream components from excessive current, short circuits, thermal events, and uncontrolled inrush current. It achieves this while minimizing voltage loss and reducing the need for external components, thanks to its integrated 31mΩ typical power MOSFET, which supports efficient high-current operation across a wide 4.5V to 18V input range.
A key differentiator of the KTS1630 is its precise, programmable protection features. Designers can optimize protection for specific system loads with an adjustable 1A to 5A current limit, rather than relying on a fixed threshold. Additionally, a programmable output slew rate controls inrush current during startup, preventing input supply droop, connector stress, and unintended system resets when large capacitive loads are connected.
For critical fault conditions, the KTS1630 offers a fast 100ns typical overcurrent response, isolating faults before they can damage downstream circuitry. It also includes integrated overtemperature protection and supports an external reverse-blocking MOSFET to prevent unwanted reverse current flow, making it suitable for systems with multiple power sources or sensitive shared power rails. The device further provides design flexibility with two fault-response versions: the KTS1630A for automatic restart after a fault clears, and the KTS1630B for latched-off until reset, allowing customers to choose between automatic system recovery or controlled fault servicing.
Specifications
| Product | Function | Input Voltage Range | Current Limit Range | On-Resistance (typ) | Overcurrent Response (typ) | Fault Response Versions | Key Protections |
|---|---|---|---|---|---|---|---|
| KTS1630 | 5A eFuse, Power-Rail Protection | 4.5V to 18V | 1A to 5A (Programmable) | 31mΩ | 100ns | KTS1630A (Auto-restart), KTS1630B (Latched-off) | Overcurrent, Short Circuit, Thermal, Inrush Current, Reverse Current (with external MOSFET) |
Key Features
- Highly integrated 5A eFuse for 5V and 12V power rails.
- Enhances safety, reliability, and power efficiency in electronic systems.
- Protects downstream components from excessive current, short circuits, thermal events, and uncontrolled inrush current.
- Integrated 31mΩ typical power MOSFET.
- Supports efficient high-current operation across a wide 4.5V to 18V input range.
- Precise, programmable current limit from 1A to 5A.
- Programmable output slew rate to control inrush current during startup.
- Fast 100ns typical overcurrent response for rapid fault isolation.
- Integrated overtemperature protection.
- Supports an external reverse-blocking MOSFET to prevent unwanted reverse current flow.
- Available in two fault-response versions: KTS1630A (automatic restart) and KTS1630B (latched-off).
Applications
- Consumer electronic systems
- Industrial electronic systems
- Systems requiring 5V power rail protection
- Systems requiring 12V power rail protection
- Systems with multiple power sources
- Systems with sensitive shared power rails
