حفاظت مدار محدودکننده‌های ولتاژ گذرا (تی وی اس) تجهیزات حفاظت در برابر اضافه‌ولتاژ گذرا (اس پی دی)

Product Attributes

Introduction

The HIP1013 offers the designer a cost efficient 5V and 12V true hot plug controller. This device drives two external N-Channel MOSFET switches and uses a charge pump to provide ≈17V to drive the gate of the 12V supply switch. The HIP1013 features Over Current (OC) programing with a single external resistor, RILM and during turn-on, the gate capacitor of each external N-Channel MOSFET is charged with a 10μA current source. These capacitors create a programmable ramp (soft turn-on). Upon initial power up, the HIP1013 can either isolate the voltage supply from the load by holding the external N-Channel MOSFET switches off or apply the supply rail voltage directly to the load for true hot swap capability. In either case the HIP1013 turns on in a soft start mode protecting the supply rail from sudden current loading. The load currents pass through two external current sense resistors. When the voltage across either resistor exceeds the user programmed Over Current (OC) voltage threshold value, the HIP1013 controller turns both N-Channel MOSFETs off in ≈2μs. The HIP1013 is reset by a rising edge on either PWRON pin and is turned on by either PWRON pin being driven low. The HIP1013 can control either +12V/5V or +3.3V/+5V supplies. Tying the PWRON1 pin to VDD, invokes the +3.3V/+5V voltage mode. In this mode, the external charge pump capacitor is not needed and CPUMP, pin 11 is also tied directly to VDD. Upon any OC or Under Voltage (UV) condition the PGOOD fault indicating signal will pull low when tied high through a resistor to the logic supply.

Features

• HOT SWAP Dual Power Distribution Control for +5V and +12V or +5V and +3.3V
• Provides Fault Isolation
• Charge Pump Allows the Use of N-Channel MOSFETs
• Redundant Power On Controls
• Power Good and Over Current Latch Indicators
• Adjustable Turn-On Ramp
• Protection During Turn-On
• Pb-free Available

Applications

• Power Distribution Control
• Hot Plug Components