Intel/Altera ES1010SI

The Altera Enpirion ES1010SI is a fully featured hot-swap power controller that targets +12V applications. The ES1010SI has an integrated charge pump, which can generate a higher (6.5V) gate drive to improve efficiency. This IC features programmable overcurrent (OC) detection, current regulation (CR) with time delay to latch-off and softstart. This ICs features a highly accurate programmable current regulation (CR) level with programmable time delay to latch-off, and programmable soft-start turn-on ramp all set with a minimum of external passive components. It also includes severe OC protection that immediately shuts down the MOSFET switch should a rapid load current transient such as with a dead short cause the CR Vth to exceed the programmed level by 150mV. Additionally, it has an UV indicator and an OC latch indicator. The functionality of the POK feature is enabled once the IC is biased, monitoring and reporting any UV condition on the ISEN+ pin. Upon initial power-up, the IC can either isolate the voltage supply from the load by holding the external N-Channel MOSFET switch off or apply the supply rail voltage directly to the load for true hot swap capability. The EN pin must be pulled low for the device to isolate the power supply from the load by holding the external N-Channel MOSFET off. With the EN pin held high or floating the IC will be in true hot swap mode. In both cases the IC turns on in a soft-start mode protecting the supply rail from sudden inrush current. At turn-on, the external gate capacitor of the N-Channel MOSFET is charged with a 11μA current source resulting in a programmable ramp (soft-start turn-on). The internal ES1010SI charge pump supplies the gate drive for the 12V supply switch driving that gate to ~VIN+6.5V. Load current passes through the external current sense resistor. When the voltage across the sense resistor exceeds the user programmed CR voltage threshold value, the corresponding action is triggered.

• Hot-swap Single Power Distribution Control for +12V
• Overcurrent Fault Isolation
• Programmable Current Regulation Level
• Programmable Current Regulation Time to Latch-Off
• Rail-to-Rail Common Mode Input Voltage Range
• Enhanced Internal Charge Pump Drives N-Channel MOSFET gate to 6.5V above IC bias
• Undervoltage and Overcurrent Latch Indicators
• Adjustable Turn-On Ramp
• Protection During Turn-On
• Two Levels of Overcurrent Detection Provide Fast Response to Varying Fault Conditions
• 1µs Response Time to Dead Short
• Pb-Free (RoHS Compliant)

• FPGA, DSP, and ASIC power protection
• Power Distribution Control
• Hot Plug Components and Circuitry