hip6021 Intersil Corporation, hip6021 Datasheet
hip6021
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hip6021 Summary of contents
Page 1
... N-channel MOSFETs or bipolar NPNs for the pass transistor. The HIP6021 monitors all the output voltages. A single Power Good signal is issued when the core is within ±10% of the DAC setting and all other outputs are above their under- voltage levels ...
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... Block Diagram 2 HIP6021 ...
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... TYPEDET Q4 V OUT3 1.5V C OUT3 Q5 V OUT4 1.8V C OUT4 3 HIP6021 LINEAR CONTROLLER Q3 HIP6021 LINEAR CONTROLLER VCC Q3 DRIVE2 VSEN2 OUT2 SELECT VAUX HIP6021 DRIVE3 VSEN3 FIX DRIVE4 VSEN4 GND Q1 PWM CONTROLLER Q2 LINEAR Q5 V CONTROLLER OUT4 OCSET POWERGOOD PGOOD UGATE Q1 L OUT1 PHASE LGATE ...
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... VSEN2 Regulation Voltage VSEN2 Regulation Voltage VSEN3 Regulation Voltage VSEN4 Regulation Voltage Under-Voltage Level (VSEN/VREG) Under-Voltage Hysteresis (VSEN/VREG) Output Drive Current (All Linears) 4 HIP6021 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 1. R RESISTANCE vs FREQUENCY T 5 HIP6021 SYMBOL TEST CONDITIONS GBWP SR COMP = 10pF I VCC = 12V UGATE UGATE UGATE GATE-PHASE I VCC = 12V ...
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... This pin shuts down all the outputs. A TTL-compatible, logic level high signal applied at this pin immediately discharges 6 HIP6021 the soft-start capacitor, disabling all the outputs. Dedicated internal circuitry insures the core output voltage does not go negative during this process. When re-enabled, the IC undergoes a new soft-start cycle ...
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... Connect this pin to the output of the linear 1.8V regulator. This pin is monitored for undervoltage events. Description Operation The HIP6021 monitors and precisely controls 4 output voltage levels (Refer to Block and Simplified Power System Diagrams, and Typical Application Schematic designed for microprocessor computer applications with 3 ...
Page 8
... A window comparator monitors the SS pin and indicates when C 8 HIP6021 fully charged to 4V (UP signal). An under-voltage on either linear output (VSEN2, VSEN3, or VSEN4) is ignored until after the soft-start interval (T4 in Figure 3). This allows ...
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... OC + PHASE - PWM GATE CONTROL FIGURE 6. OVER-CURRENT DETECTION 9 HIP6021 The OC trip point varies with MOSFET’s r temperature variations. To avoid over-current tripping in the normal operating load range, determine the R resistor from the equation above with: 1. The maximum r COUNT = 3 2. The minimum I 3. Determine I ∆ ...
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... The peak surge current occurs during the initial output voltage rise to 70% of the set value. Shutdown The HIP6021 features a dedicated shutdown pin (SD). A TTL-compatible, logic high signal applied to this pin shuts down (disables) all four outputs and discharges the soft-start capacitor ...
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... Modulator Break Frequency Equations The compensation network consists of the error amplifier (internal to the HIP6021) and the impedance networks Z and Z a closed loop transfer function with high 0dB crossing frequency (f is the difference between the closed loop phase at f 180 degrees. The equations below relate the compensation network’ ...
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... REFERENCE ERROR AMP DETAILED COMPENSATION COMPONENTS COMP HIP6021 DACOUT FIGURE 9. VOLTAGE-MODE BUCK CONVERTER COMPENSATION DESIGN 12 HIP6021 Compensation Break Frequency Equations OCSET1 OCSET1 Figure 10 shows an asymptotic plot of the DC-DC Q1 converter’s gain vs. frequency. The actual Modulator Gain L OUT1 V OUT1 has a high gain peak dependent on the quality factor (Q) of the output filter, which is not shown in Figure 9 ...
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... Given a sufficiently fast control loop design, the 13 HIP6021 HIP6021 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. During this ...
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... The equations below assume linear voltage-current transitions and do not model power loss due to the reverse- recovery of the lower MOSFET’s body diode. The gate- charge losses are dissipated by the HIP6021 and don't heat the MOSFETs. However, large gate-charge increases the switching time, t ...
Page 15
... HIP6021 DC-DC Converter Application Circuit Figure 12 shows an application circuit of a power supply for a microprocessor computer system. The power supply provides the microprocessor core voltage (VOUT1), the AGP bus voltage (VOUT2), the GTL bus voltage (VOUT3), and the memory +12V IN L1 +5V IN 1µH GND +3 ...