JAJSGA2F September 2018 – June 2021 TPS2663
The TPS2663x devices are a family of 60-V industrial eFuses. The devices provides robust protection for all systems and applications powered from 4.5 V to 60 V. With an external N-channel FET the devices can be used to protect the loads from negative supply voltages down to –60 V. For hot-pluggable boards, the devices provides hot-swap power management with in-rush current control and programmable output voltage slew rate features using the dVdT pin. Load, source and device protections are provided with many programmable features including overcurrent, overvoltage and undervoltage. The precision overcurrent limit (±7% at 6 A) helps to minimize over design of the input power supply, while the fast response short circuit protection 1-µs (typical) immediately isolates the faulty load from the input supply when a short circuit is detected. The device features fast reverse current blocking response (0.17 µs). The internal robust protection control blocks of the TPS2663x along with its ±60-V rating, helps to simplify the system designs for the industrial surge compliance ensuring complete protection of the load and the device. The 60-V maximum DC operating and 70-V absolute maximum voltage rating enables system protection from 60-V DC input supply faults and from industrial SELV power supplies.
By monitoring the output (Load) voltage through the PGTH pin, the device distinguishes between real system faults and system transients and the turn ON delay during a fault recovery is controlled accordingly. The valid load voltage detection threshold can be adjusted using a resistor ladder network from OUT, PGTH and GND. This scheme ensures fast recovery during system tests like voltage interruption and brown-out tests, EMC testing like Electrical Fast Transients (IEC61000-4-4) and Surge (IEC61000-4-5).
The TPS26632, TPS26633, TPS26635 and TPS26636 devices integrate adjustable output power limiting (PLIM) functionality that simplifies the system design requiring compliance in accordance to standards like IEC61010-1 and UL1310.
The devices provides precise monitoring of voltage bus for brown-out, overvoltage conditions and asserts fault signal for the downstream system. Its overall threshold accuracy of 2% ensures tight supervision of bus, eliminating the need for a separate supply voltage supervisor chip. The devices monitors V(IN_SYS) and V(OUT) to provide true reverse current blocking when a reverse condition or input power failure condition is detected.
Additional features of the TPS2663x devices include: