ISL6316 Intersil Corporation, ISL6316 Datasheet
ISL6316
Related parts for ISL6316
ISL6316 Summary of contents
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... Microprocessor loads can generate load transients with extremely fast edge rates. The ISL6316 features a high bandwidth control loop and ripple frequencies up to >4MHz to provide optimal response to the transients. Today’s microprocessors require a tightly regulated output voltage position versus load current (droop) ...
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... Pinout NC VID5 VID4 VID3 VID2 VID1 VID0 GND OFS DAC www.DataSheet4U.com 2 ISL6316 ISL6316 (40-PIN QFN) TOP VIEW GND ISEN3+ 29 ISEN3- 28 ISEN2- 27 ISEN2+ 26 PWM2 25 PWM4 24 ISEN4+ 23 ISEN4- 22 ISEN1- ...
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... ISL6316CR Block Diagram VDIFF PGOOD RGND x1 VSEN OVP SOFT-START +175mV FAULT LOGIC SS OFS OFFSET REF DAC VID5 VID4 DYNAMIC VID3 VID D/A VID2 VID1 VID0 COMP FB IDROOP VR_HOT THERMAL MONITORING VR_FAN www.DataSheet4U.com TM 3 ISL6316 CLOCK AND AND SAWTOOTH GENERATOR ∑ PWM ∑ ...
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... VID2 ISEN3- VID1 PWM4 VID0 ISEN4+ ISEN4- VR_FAN GND VR_HOT TM EN_PWR TCOMP OFS OFS +12V NTC www.DataSheet4U.com 4 ISL6316 DS(ON) +12V VCC PVCC ISL6612 PWM DRIVER +5V +12V VCC PVCC ISL6612 PWM DRIVER +12V VCC BOOT PVCC ISL6612 PWM DRIVER +12V ...
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... VID1 PWM4 VID0 ISEN4+ ISEN4- VR_FAN GND VR_HOT TM EN_PWR OFS FS TCOMP SS +5V +5V R OFS +12V NTC www.DataSheet4U.com 5 ISL6316 DS(ON) +12V VCC PVCC ISL6612 PWM DRIVER +5V +12V VCC PVCC ISL6612 PWM DRIVER +12V VCC BOOT PVCC ISL6612 PWM DRIVER +12V VCC ...
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... ISEN3- VID1 PWM4 VID0 ISEN4+ ISEN4- VR_FAN GND VR_HOT TM EN_PWR TCOMP OFS OFS +12V NTC www.DataSheet4U.com 6 ISL6316 +12V VCC PVCC ISL6612 PWM DRIVER +5V +12V VCC PVCC ISL6612 PWM DRIVER +12V VCC BOOT PVCC ISL6612 PWM DRIVER +12V VCC ...
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... ISEN3- VID1 PWM4 VID0 ISEN4+ ISEN4- VR_FAN GND VR_HOT TM EN_PWR TCOMP OFS FS SS +5V +5V R OFS R T +12V NTC www.DataSheet4U.com 7 ISL6316 +12V VCC PVCC ISL6612 PWM DRIVER +5V +12V VCC PVCC ISL6612 PWM DRIVER +12V VCC BOOT PVCC ISL6612 PWM DRIVER +12V VCC ...
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... Operating Conditions Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5% Ambient Temperature (ISL6316CRZ 0°C to 70°C Ambient Temperature (ISL6316IRZ .-40°C to 85°C CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied ...
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... Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified (Continued) PARAMETER PIN-ADJUSTABLE OFFSET Voltage at OFS Pin of ISL6316CRZ Voltage at OFS Pin of ISL6316IRZ OSCILLATORS Accuracy of Switching Frequency Setting Adjustment Range of Switching Frequency (Note 4) Soft-start Ramp Rate Adjustment Range of Soft-start Ramp Rate (Note 4) PWM GENERATOR ...
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... ICs. When EN_PWR is driven above 0.875V, the ISL6316 is active depending on status of EN_VTT, the internal POR, and pending fault states. Driving EN_PWR below 0.745V will clear all fault states and prime the ISL6316 to soft-start when re-enabled. EN_VTT - This pin is another threshold-sensitive enable input for the controller. It’ ...
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... The block diagrams on pages and 7 provide top level views of multiphase power conversion using the ISL6316 controller. Interleaving The switching of each channel in a multiphase converter is timed to be symmetrically out of phase with each of the other channels ...
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... RMS current for comparison. PWM Operation The timing of each channel is set by the number of active channels. The default channel setting for the ISL6316 is four. The switching cycle is defined as the time between PWM pulse termination signals of each channel. The pulse termination signal is an internally generated clock signal which triggers the falling edge of PWM signal ...
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... SAMPLE CURRENT, I SWITCHING PERIOD TIME FIGURE 3. SAMPLE AND HOLD TIMING Current Sensing The ISL6316 supports inductor DCR sensing, MOSFET www.DataSheet4U.com R sensing, or resistive sensing techniques. The DS(ON) internal circuitry, shown in Figures 4, 5, and 6, represents one channel of an N-channel converter. This circuitry is repeated ...
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... In order to compensate the temperature effect on the sensed current signal, a Positive Temperature Coefficient C OUT (PTC) resistor can be selected for the sense resistor R or the integrated temperature compensation function of ISL6316 should be utilized. The integrated temperature R ISEN(n) compensation function is described in the Temperature Compensation section. Channel-Current Balance The sensed current I together and divided by the number of active channels ...
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... DAC) and offset errors in the OFS current source, remote-sense and error amplifiers. Intersil specifies the guaranteed tolerance of the ISL6316 to include the combined tolerances of each of these elements. The output of the error amplifier, V COMP sawtooth waveform to generate the PWM signals ...
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... ISL6316 VID4 VID5 VOLTAGE 400mV 12.5mV ( 1.6000 1 0 1.5875 1 1 1.5750 1 0 1.5625 0 1 1.5500 0 0 1.5375 0 1 1.5250 0 0 1.5125 0 1 1.5000 ...
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... DAC range of the processor without discontinuity or disruption is a necessary function of the core-voltage regulator. The ISL6316 checks the VID inputs six times every switching cycle. If the VID code is found to have been changed, the OFS controller waits for half of a switching cycle before executing a 6 ...
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... POR, EN_VTT or EN_PWR signal is needed to restart. 910Ω Soft-start ISL6316 based VR has 2 periods during soft-start as shown in Figure 11. After Vcc, EN_VTT and EN_PWR reach their EN_VTT POR/enable thresholds, The controller will have a fixed delay period TD1. After this delay period, the VR will begin the first soft-start ramp until the output voltage reaches the final setting ...
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... MOSFETs. If the overvoltage condition reoccurs, the ISL6316 will again command the lower MOSFETs to turn on. The ISL6316 will continue to protect the load in this fashion as long as the overvoltage condition occurs. Once an overvoltage condition is detected, normal PWM operation ceases until the ISL6316 is reset ...
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... Overcurrent Protection ISL6316 has two levels of overcurrent protection. Each phase is protected from a sustained overcurrent condition on a delayed basis, while the combined phase currents are protected on an instantaneous basis. In instantaneous protection mode, the ISL6316 utilizes the sensed average current I to detect an overcurrent AVG condition ...
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... Integrated Temperature Compensation When TCOMP voltage is equal or greater than Vcc/15, ISL6316 will utilize the voltage at TM and TCOMP pins to compensate the temperature impact on the sensed current. The block diagram of this function is shown in Figure 17. 100 120 ...
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... NTC will track the temperature of the current sense component. Therefore the TM voltage can be utilized to obtain the temperature of the current sense component. Based on Vcc voltage, ISL6316 converts the TM pin voltage to a 6-bit TM digital signal for temperature compensation. With the non-linear A/D converter of ISL6316, TM digital signal is linearly proportional to the NTC temperature ...
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... FB and VDIFF pin is reverse proportional to the temperature. The external temperature compensation network can only compensate the temperature impact on the droop, while it has no impact to the sensed current inside ISL6316. Therefore this network cannot compensate for the temperature impact on the over current protection function. ...
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... ISEN 2 , ISEN ∆T 1 www.DataSheet4U.com 24 ISL6316 In Equation 29, make sure that ∆T rise above the ambient temperature, and ∆T temperature rise above the ambient temperature. While a single adjustment according to Equation 29 is usually sufficient, it may occasionally be necessary to adjust R (EQ. 25) two or more times to achieve optimal thermal balance between all channels ...
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... P www.DataSheet4U.com 25 ISL6316 FIGURE 20. COMPENSATION CIRCUIT FOR ISL6316 BASED In Equation 32 the per-channel filter inductance divided by the number of active channels the sum total of all output capacitors; ESR is the equivalent-series resistance of . The target 0 the bulk output-filter capacitance; and V peak sawtooth signal amplitude as described in Figure 7 and Electrical Specifications ...
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... ESL. As the load current increases, the voltage drop across the ESR increases linearly until the load 26 ISL6316 current reaches its final value. The capacitors selected must have sufficiently low ESL and ESR so that the total output- voltage deviation is less than the allowable maximum. ...
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... Input Supply Voltage Selection The VCC input of the ISL6316 can be connected either directly to a +5V supply or through a current limiting resistor to a +12V supply. An integrated 5.8V shunt regulator maintains the voltage on the VCC pin when a +12V supply is used. A 300Ω resistor is suggested for limiting the current into the VCC pin to a worst-case maximum of approximately 25mA ...
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... Locate the output capacitors between the inductors and the load, while keeping them in close proximity to the microprocessor socket. The ISL6316 can be placed off to one side or centered relative to the individual phase switching components. Routing of sense lines and PWM signals will guide final placement. ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 29 ISL6316 L40.6x6 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE (COMPLIANT TO JEDEC MO-220VJJD-2 ISSUE C) ...