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| Multiphase PWM Controller with Linear 6-bit DAC Capable of Precision rDS(ON) or DCR Differential Current Sensing |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL6564CRZ |
Active |
Comm |
40 Ld QFN |
2 |
Contact Us |
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| ISL6564CRZ-T |
Active |
Comm |
40 Ld QFN T+R |
2 |
Contact Us |
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| ISL6564IRZ |
Active |
Ind |
40 Ld QFN |
2 |
5.78 |
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| ISL6564IRZ-T |
Active |
Ind |
40 Ld QFN T+R |
2 |
6.32 |
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| ISL6564CR |
InActive |
Comm |
40 Ld QFN |
2 |
N/A |
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| ISL6564CR-T |
InActive |
Comm |
40 Ld QFN T+R |
2 |
N/A |
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| ISL6564IR |
InActive |
Ind |
40 Ld QFN |
2 |
N/A |
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| ISL6564IR-T |
InActive |
Ind |
40 Ld QFN T+R |
2 |
N/A |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The ISL6564 is a Multiphase PWM controller which controls microprocessor core voltage regulation by driving up to 4 synchronous-rectified buck channels. It features a high bandwidth control loop to provide optimal response to the load transients. With switching frequency up to 1.5MHz per phase, the ISL6564 based voltage regulator requires minimum components and PCB area in DC/DC converter application.
The ISL6564 senses current by utilizing patented techniques to measure the voltage across the on resistance, rDS(on), of the lower MOSFETs or DCR of the output inductor during their conduction intervals. Current sensing provides the needed signals for precision droop, channel-current balancing, and overcurrent protection.
A unity gain, differential amplifier is provided for remote voltage sensing. Any potential difference between remote and local grounds can be completely eliminated using the remote-sense amplifier. Eliminating ground differences improves regulation and protection accuracy. The thresholdsensitive enable input is available to accurately coordinate the start up of the ISL6564 with any other voltage rail. Dynamic-VID™ technology allows seamless on-the-fly VID changes. The offset pin allows accurate voltage offset settings that are independent of VID setting. The ISL6564 uses a 5V bias and has a built-in shunt regulator to allow 12V bias using only a small external limiting resistor. |
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 Key Features |
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Precision Multiphase Core Voltage Regulation
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Differential Remote Voltage Sensing
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±0.5% System Accuracy
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Adjustable Reference-Voltage Offset
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Precision rDS(ON) or DCR Current Sensing
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Accurate Load-Line Programming
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Accurate Channel-Current Balancing
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Differential Current Sense
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Low-Cost, Lossless Current Sensing
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Internal Shunt Regulator for 5V or 12V Biasing
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Microprocessor Voltage Identification Input
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Self clocked Dynamic VID™ control technology
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6-Bit VID Input
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0.525V to 1.300V in 12.5mV Steps
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Threshold-Sensitive Enable Function for power sequencing control
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Overcurrent Protection
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Overvoltage Protection
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No Additional External Components Needed
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OVP Pin to drive Crowbar Device
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1, 2, 3, or 4 Phase Operation
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Up to 1.5MHz per phase Operation (>6MHz Ripple)
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QFN Package
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Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline
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QFN Near Chip Scale Package Footprint; Improves PCB Efficiency, Thinner in Profile
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Pb-Free Available (RoHS Compliant)
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| Related Documentation |
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 Datasheet(s): |
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 Parametric Data |
| | VIN (min) (V) | | 3 | | | VIN (max) (V) | | 12 | | | VOUT (min) (V) | | .525 | | | VOUT (max) (V) | | 1.3 | | | IOUT (max) (A) | | ≥120 | | | VBIAS (V) | | 5, 12 | | | Applications | | Montecito | |
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 Application Block Diagrams |
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