MP5024

The MP5024 is a hot-swap protection device designed to protect circuitry on its output from transients on its input. The device also protects its input from undesired shorts and transients coming from its output. It can achieve up to 20A of continuous output current (IOUT) per device at room temperature. The MP5024 limits the power supply voltage drop by limiting the inrush current to the load while a circuit card is inserted into a live backplane power source. It limits the internal MOSFET current (IFET) by controlling the gate voltage (VGATE) via a low-power resistor connected from ISET to ground and a soft-start ramp. The MP5024 provides many features to simplify system design, such as an integrated current mirror to monitor IOUT and integrated on-die temperature-sensing. This eliminates the need for an external current-sense power resistor, power MOSFET, and temperature-sense device. The MP5024 provides rich fault protections, such as input voltage (VIN) over-voltage protection (OVP), IOUT over-current protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP). The device detects power MOSFET gate, source, and drain short conditions. The fault status can be indicated with the fault report output (FLT#/ALT#). The MP5024 also provides power good (PG) indication. The PMBus interface provides VIN, input current (IIN), input energy (EIN), output voltage (VOUT), IOUT, input power (PIN), and output power (POUT) telemetry. The MP5024 monitors and reports fault statuses through the PMBus interface. The MP5024 is available in a QFN-33 (3.5mmx4.5mm) package.