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HIP1013_04 Datasheet(数据表) 6 Page - Intersil Corporation |
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HIP1013 Datasheet(HTML) 6 Page - Intersil Corporation |
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6 page 
6 HIP1013 Description and Operation 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, RILIM and during turn-on, the gate capacitor of each external N-Channel MOSFET is charged with a 10 µA 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, (see Table 1) 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. FIGURE 7. OC VOLTAGE THRESHOLD WITH = RILIM 10kΩ FIGURE 8. POWER ON RESET VOLTAGE THRESHOLD Typical Performance Curves (Continued) 20 40 60 80 -40 0 -20 12 OC VTth 5 OC Vth TEMPERATURE (°C) 102.5 102.0 101.5 101.0 100.5 -40 -20 0 20 40 60 80 -30 -10 10 30 50 70 10.2 10.0 9.8 9.6 TEMPERATURE (°C) VDD LOW TO HIGH VDD HIGH TO LOW TABLE 1. RILIM RESISTOR NOMINAL OC VTH 15K 150mv 10K 100mV 7.5K 75mV 4.99K 50mV NOTE: Nominal OC Vth = RILIM x 10 µA HIP1013 |
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