Hot Swap Controller 1-CH 13V 14-Pin SOIC Tube

The TPS2330 and TPS2331 are single-channel hot-swap controllers that use external N-channel MOSFETs as high-side switches in power applications. Features of these devices, such as overcurrent protection (OCP), inrush-current control, output-power status reporting, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications.The TPS2330/31 devices incorporate undervoltage lockout (UVLO) and power-good (PG) reporting to ensure the device is off at start-up and confirm the status of the output voltage rails during operation. An internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pump controls both the rise times and fall times (dV/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period. DISCH – DISCH should be connected to the source of the external N-channel MOSFET transistor connected to GATE. This pin discharges the load when the MOSFET transistor is disabled. They also serve as reference-voltage connection for internal gate-voltage-clamp circuitry. ENABLE\ or ENABLE –  ENABLE\ for TPS2330 is active-low. ENABLE for TPS2331 is active-high. When the controller is enabled, GATE voltage powers up to turn on the external MOSFETs. When the ENABLE\ pin is pulled high for TPS2330 or the ENABLE pin is pulled low for TPS2331 for more than 50 µs, the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than 5 µA. FAULT\  –  FAULT\ is an open-drain overcurrent flag output. When an overcurrent condition is sustained long enough to charge TIMER to 0.5 V, the device latches off and pulls FAULT\ low. In order to turn the device back on, either the enable pin must be toggled or the input power must be cycled. GATE – GATE connects to the gate of the external N-channel MOSFET transistor. When the device is enabled, internal charge-pump circuitry pulls this pin up by sourcing approximately 15 µA. The turnon slew rates depend on the capacitance present at the GATE terminal. If desired, the turnon slew rates can be further reduced by connecting capacitors between this pin and ground. These capacitors also reduce inrush current and protect the device from false overcurrent triggering during power up. The charge-pump circuitry generates gate-to-source voltages of 9 V–12 V across the external MOSFET transistor. IN – IN should be connected to the power source driving the external N-channel MOSFET transistor connected to GATE. The TPS2330/31 draws its operating current from IN, and remains disabled until the IN power supply has been established. The device has been constructed to support 3-V, 5-V, or 12-V operation.

Single-Channel High-Side MOSFET Driver

Input Voltage: 3 V to 13 V

Output dV/dt Control Limits Inrush Current

Circuit-Breaker With Programmable Overcurrent
Threshold and Transient Timer

Power-Good Reporting With Transient Filter

CMOS- and TTL-Compatible Enable Input

Low 5-µA Standby Supply Current (Max)

Available in 14-Pin SOIC and TSSOP Package

–40°C to 85°C Ambient Temperature Range

Electrostatic Discharge Protection