ISL6217ACVZ-T Intersil, ISL6217ACVZ-T Datasheet

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ISL6217ACVZ-T

Manufacturer Part Number
ISL6217ACVZ-T
Description
IC CTRLR PWM INTEL PENT 38-TSSOP
Manufacturer
Intersil
Datasheet

Specifications of ISL6217ACVZ-T

Applications
Controller, Intel Pentium® IMVP-IV, IMVP+
Voltage - Input
5.5 ~ 25 V
Number Of Outputs
1
Operating Temperature
-10°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
38-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL6217ACVZ-T
Manufacturer:
ROHM
Quantity:
6 186
Part Number:
ISL6217ACVZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
Precision Multi-Phase Buck PWM
Controller for Intel, Mobile Voltage
Positioning IMVP-IV™ and IMVP-IV+™
The ISL6217A Multi-Phase Buck PWM controller IC, with
integrated half bridge gate drivers, provides a precision
voltage regulation system for advanced Pentium IV
microprocessors in notebook computers. Two-phase
operation eases the thermal management issues and load
demand of Intel’s latest high performance processors. This
control IC also features both input voltage feed-forward and
average current mode control for excellent dynamic
response, “Loss-less” current sensing using MOSFET
r DS(ON) and user-selectable switching frequencies from
250kHz to 1MHz per phase.
The ISL6217A includes a 6-bit digital-to-analog converter
(DAC) that dynamically adjusts the CORE PWM output
voltage from 0.700V to 1.708V in 16mV steps and conforms
to the Intel IMVP-IV™ and IMVP-IV+™ mobile VID
specification. The ISL6217A also has logic inputs to select
Active, Deep Sleep and Deeper Sleep modes of operation. A
precision reference, remote sensing and proprietary
architecture, with integrated, processor-mode, compensated
“Droop”, provide excellent static and dynamic CORE voltage
regulation.
To improve efficiency at light loading, the ISL6217A can be
configured to run in single phase PWM in ACTIVE, DEEP or
DEEPER SLEEP modes of operation. Also, in deep and
deeper sleep modes the ISL6217A will operate in diode
emulation.
Another feature of this IC controller is the PGOOD monitor
circuit that is held low until CORE voltage increases, during
its soft-start sequence, to within 12% of the “Boot” voltage.
This PGOOD signal is masked during VID changes. Output
overcurrent, overvoltage and undervoltage are monitored
and result in the converter latching off and PGOOD signal
being held low.
The overvoltage and undervoltage thresholds are 112% and
84% of the VID, Deep or Deeper Sleep setpoint,
respectively. Overcurrent protection features a 32 cycle
overcurrent shutdown. PGOOD, overvoltage, undervoltage
and overcurrent provide monitoring and protection for the
microprocessor and power system. The ISL6217A IC is
available in a 38 lead TSSOP.
®
1
Data Sheet
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Diode Emulation Functionality in deep and deeper sleep
• IMVP-IV™ and IMVP-IV+™ Compliant CORE Regulator
• Single and/or Two-phase Power Conversion
• “Loss-less” Current sensing for improved efficiency and
• Internal Gate-Drive and Boot-Strap Diodes
• Precision CORE Voltage Regulation
• 6-Bit Microprocessor Voltage Identification Input
• Programmable “Droop” and CORE Voltage Slew Rate to
• Direct Interface with System Logic (STP_CPU# and
• Easily Programmable voltage setpoints for Initial “Boot”,
• Excellent Dynamic Response
• Overvoltage, Undervoltage and Overcurrent Protection
• Power-Good Output with internal blanking during VID and
• User programmable Switching Frequency of 250kHz -
• Pb-Free Plus Anneal Available (RoHS Compliant)
modes for improved light load efficiency
reduced board area
- Optional Discrete Precision Current Sense Resistor
- 0.8% system accuracy over temperature
comply with IMVP-IV™ and IMVP-IV+™ specification
DPRSLPVR) for Deep and Deeper Sleep modes of
operation
Deep Sleep and Deeper Sleep Modes
- Combined Voltage Feed-Forward and Average Current
mode changes
1MHz per phase
Mode Control
All other trademarks mentioned are the property of their respective owners.
June 30, 2005
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved
ISL6217A
FN9107.3

Related parts for ISL6217ACVZ-T

ISL6217ACVZ-T Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6217A ...

Page 2

... PACKAGE ISL6217ACV - TSSOP ISL6217ACV TSSOP Tape and Reel ISL6217ACVZ - TSSOP (Note 1) (Pb-free) ISL6217ACVZ TSSOP Tape and Reel (Note 1) (Pb-free) ISL6217ACVZA - TSSOP (Pb-free) ISL6217ACVZA TSSOP Tape and Reel (Pb-free) NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 3

Absolute Voltage Ratings Supply Voltage, VDD, VDDP . . . . . . . . . . . . . . . . . . . . . . . . -0.3-+7V Battery Voltage, VBAT . . . . . ...

Page 4

Electrical Specifications Operating Conditions: VDD = 5V, T PARAMETER UGATE Sink Resistance 500mA Sink Current UGATE Sink Current V UGATE-PHASE = 2.5V LGATE Source Resistance 500mA Source Current LGATE Source Current V LGATE = 2.5V LGATE Sink Resistance 500mA Sink ...

Page 5

Functional Pin Description VDD - This pin is used to connect +5V to the IC to supply all power necessary to operate the chip. The IC starts to operate when the voltage on this pin exceeds the rising POR threshold ...

Page 6

Block Diagram VSEN + OVP - FAULT LOGIC 112% RISING 102% FALLING 88% RISING 84% FALLING - + UV 32 COUNT CLOCK CYCLE DACOUT V SOFT SOFT SOFT START EA+ VID0 VID1 VID2 VID VID3 D/A VID4 VID5 COMP FB ...

Page 7

Typical Application - 2-Phase Converter Figure 1 shows a 2-Phase Synchronous Buck Converter circuit used to provide “CORE” voltage regulation for the Intel Pentium IV mobile processor using IMVP-IV™ and IMVP-IV+™ voltage positioning. The ISL6217A PWM controller can be configured ...

Page 8

... The ISL6217A PGOOD pin is both an input and an output. The system signal, IMVP4_PWRGD, is connected to power good signals from the Vccp and Vcc_mch supplies. The Intersil ISL6227, Dual Voltage Regulator is an ideal choice for the Vccp and Vcc_mch supplies. Once the output voltage is within the “Boot” level regulation ...

Page 9

Active, Deep and Deeper Sleep slew rate requirements of the Intel IMVP-IV™ and IMVP-IV+™ specification. ISL6217A DROOP R EA+ SOFT DROOP + V DROOP C SOFT FIGURE 3. SOFT-START TRACKING CIRCUITRY SHOWING INTERNAL ...

Page 10

TABLE 1. IMPV-IV VID CODES VID5 VID4 VID3 VID2 VID1 ...

Page 11

Active, Deep Sleep and Deeper Sleep Modes The ISL6217A Multi-Phase Controller is designed to control the CORE output voltage as per the IMVP-IV™ and IMVP-IV+™ specifications for Active, Deep Sleep, and Deeper Sleep Modes of Operation. After initial Start-up, a ...

Page 12

A logic low signal present on STPCPU# (pin DSEN#), with a logic low signal on DPRSLPVR (pin DRSEN), signals the ISL6217A to reduce the CORE output voltage to the Deep Sleep level, the voltage on the DSV pin, and to ...

Page 13

Overcurrent Setting - OCSET The ISL6217A overcurrent protection essentially compares a user-selectable overcurrent Threshold to the scaled and sampled output current. An overcurrent condition is defined when the sampled current is equal to or greater than the threshold current. A ...

Page 14

... FIGURE 10. INTERNAL PGOOD CIRCUITRY FOR THE As per the IMVP-IV™ and IMVP-IV+™ specification, once the ISL6217A CORE regulator regulates to the “Boot” voltage, it waits for the PGOOD logic HIGH signals from the Vccp and Vcc_mch regulators. The Intersil ISL6227 UG1 ...

Page 15

PGOOD functions for each supply. Once these two supplies are within regulation, PGOOD Vccp and PGOOD Vcc_mch will be high impedance, and will allow the ...

Page 16

Voltage Loop The output CORE voltage feedback is applied to the Error Amplifier through the compensation network. The signal seen on the FB pin will drive the Error Amplifier output either high or low, depending on the CORE voltage. A ...

Page 17

R which is calculated through ISEN Equation and Droop as per the Block Diagram or DS(ON) the following equation ISEN = ⋅ ⋅ Ω Droop ( DROOP ...

Page 18

FIGURE 12. OUTPUT RIPPLE CURRENT MULTIPLIER vs DUTY CYCLE Find the intersection of the active channel curve and duty cycle for your particular application. The resulting ripple current multiplier from the y-axis is then multiplied by the normalization factor K ...

Page 19

× OUT UPPER V IN Typical Application - 2 Phase Converter Using ISL6217A PWM Controller - 38 Lead TSSOP Figure 14 shows the ...

Page 20

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 ...

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