hip6028 Intersil Corporation, hip6028 Datasheet
hip6028
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hip6028 Summary of contents
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... Data Sheet Advanced PWM and Dual Linear Power Control with Integrated ACPI Support Interface The HIP6028 provides the power control and protection for three output voltages in high-performance microprocessor and computer applications. The IC integrates a PWM controller, a linear regulator and a linear controller as well as the monitoring and protection functions into a single package ...
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... Block Diagram - + 2-312 HIP6028 ...
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... OUT3 1.5V C OUT3 2-313 HIP6028 LINEAR REGULATOR PWM CONTROLLER HIP6028 LINEAR Q3 CONTROLLER FIGURE 2. VCC OCSET VIN2 PGOOD VOUT2 UGATE PHASE LGATE PGND DRIVE3 HIP6028 VSEN3 VSEN1 FB SD1&3 COMP VID0 VID1 VID2 FAULT VID3 RT VID4 SS GND FIGURE OUT1 Q2 POWERGOOD OUT1 OUT1 1 ...
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... Regulation Under-Voltage Level Under-Voltage Hysteresis DRIVE3 Source Current PWM CONTROLLER ERROR AMPLIFIER DC Gain Gain-Bandwidth Product 2-314 HIP6028 Thermal Information Thermal Resistance (Typical, Note 1) SOIC Package 0.3V CC Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s ...
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... PGOOD Voltage Low Typical Performance Curves 1000 R PULLUP T TO +12V 100 10 R PULLDOWN 100 SWITCHING FREQUENCY (kHz) FIGURE 4. R RESISTANCE vs FREQUENCY T 2-315 HIP6028 SYMBOL TEST CONDITIONS SR COMP = 10pF I VCC = 12V, V (or V UGATE UGATE GATE2 UGATE UGATE-PHASE I VCC = 12V ...
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... Connect the PHASE pin to the PWM converter’s upper MOSFET source. This pin is used to monitor the voltage drop across the upper MOSFET for over-current protection. 2-316 HIP6028 UGATE (Pin 24) Connect UGATE pin to the PWM converter’s upper MOSFET gate. This pin provides the gate drive for the upper MOSFET. ...
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... Description Operation The HIP6028 monitors and precisely controls 3 output voltage levels (Refer to Figures 1, 2, and 3 designed for microprocessor computer applications with 3.3V and 5V power, and 12V bias input from an ATX power supply. The IC has one PWM controller, a linear controller, and a linear regulator ...
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... The linear regulator and the linear controller monitor VOUT2 and VSEN3, respectively, for under-voltage to protect against excessive currents. 2-318 HIP6028 Figures 8 and 9 illustrate the over-current protection with an overload on V current increases through the output inductor (L time T1, the OVER-CURRENT1 comparator trips when the ...
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... The sudden change in the resulting reference voltage could toggle the PGOOD signal and exercise the over-voltage protection or cause an over-current event. ‘11111’ VID pin combination disables the IC and drives ‘on’ the otherwise open-collector at the PGOOD pin. 2-319 HIP6028 determined by: VID4 +5V 0 ...
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... There are two sets of critical components in a DC-DC converter using a HIP6028 controller. The power components are the most critical because they switch large amounts of energy. The critical small signal components connect to sensitive nodes or supply critical by-passing current. The power components should be placed fi ...
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... Modulator Break Frequency Equations The compensation network consists of the error amplifier need only be internal to the HIP6028 and the impedance networks Z and Z a closed loop transfer function with an acceptable 0dB crossing frequency (f Phase margin is the difference between the closed loop phase at f the compensation network’ ...
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... The load transient for the microprocessor core requires high quality capacitors to supply the high slew rate (di/dt) current demands. 2-322 HIP6028 PWM Output Capacitors Modern microprocessors produce transient load rates above 1 10A/ns. High frequency capacitors initially supply the transient ...
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... Given a sufficiently fast control loop design, the HIP6028 will provide either 0% or 100% duty cycle in response to a load transient. The response time is the time interval required to slew the inductor current from an initial current value to the post-transient current level ...
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... The diode's rated reverse breakdown voltage must be greater than twice the maximum input voltage. 2-324 HIP6028 Linear Controller Pass Transistor Selection The main criteria for selection of a pass transistor for the linear regulator is package selection for efficient removal of heat ...
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... HIP6028 DC-DC Converter Application Circuit Figure 16 shows an application circuit of a power supply for a microprocessor computer system. The power supply provides the microprocessor core voltage (V bus voltage (V ) and clock generator voltage (V OUT3 from +3.3V , +5V and +12V . For detailed information +12V + ...
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... HIP6028 2-326 ...