ISL6537A-6506EVAL1Z Intersil, ISL6537A-6506EVAL1Z Datasheet

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ISL6537A-6506EVAL1Z

Manufacturer Part Number
ISL6537A-6506EVAL1Z
Description
EVALUATION BOARD ISL986A-6506
Manufacturer
Intersil

Specifications of ISL6537A-6506EVAL1Z

Main Purpose
Special Purpose DC/DC, DDR Memory Supply
Outputs And Type
7, Non-Isolated
Power - Output
178W
Voltage - Output
1.8V, 3.3V, 5V, 1.5V, 1.2V, 2.5V, 0.9V
Current - Output
15A, 14A, 14A, 10A, 5A, 5A, 2A
Voltage - Input
3.3V, 5V, 12V
Regulator Topology
Buck
Board Type
Fully Populated
Utilized Ic / Part
ISL6506, ISL6537A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency - Switching
-
Introduction
The ISL6537A, in conjunction with the ISL6506, provides a
complete ACPI compliant power solution for computer
systems with either dual channel DDRI, DDRII, or DDRIII
Memory systems. The chipset offered by Intersil provides the
necessary control, protection and proper ACPI sequencing of
the following rails: 5VDUAL, 3.3VDUAL, V
V
The ISL6537A consists of a synchronous buck controller to
supply V
states and standby current during S3 (Suspend-To-RAM =
STR) state. During Run mode, a fully integrated sink-source
regulator generates an accurate (V
V
reference is provided as V
features a PWM controller that, in conjunction with an external
gate driver IC, regulates V
regulate V
description of the ISL6537A can be found in the
datasheet[1].
The ISL6506 controls the 5VDUAL and 3.3VDUAL rails.
There are three versions of the ISL6506. The version
required will depend on whether 5VDUAL is required to be
active during S4/S5. A more complete description of the
ISL6506 can be found in the datasheet[2].
Quick Start Evaluation
The ISL6537A_6506EVAL1Z board is shipped ‘ready to use’
right from the box. The ISL6537A_6506EVAL1Z supports
testing with an ATX power supply. All seven outputs can be
exercised through external loads. Both the V
regulators have the ability to source or sink current while all
other outputs may only source current.
There are posts available on each regulated output rail for
drawing a load and/or monitoring the voltages. Eighteen
individually labeled probe points are also available for use.
These probe points provide Kelvin connections to signals
which may be of interest to the designer.
Two switches have been placed on the board to
accommodate ACPI signal simulation. These two switches
generate the SLP_S3 and SLP_S5 signals that are sent to
the ISL6506, ISL6537A and the ATX.
Recommended Test Equipment
To test the full functionality of the ISL6537A and ISL6506,
the following equipment is recommended:
• An ATX power supply (minimum 160W configuration)
• Multiple electronic loads
• Four channel oscilloscope with probes
• Precision digital multimeters
TT_DDR
TT_DDR
DDQ_DDR
, V
voltage. A buffered version of the V
DAC
REF_DDR
and V
with high current during S0/S1 (Run)
TT_GMCH/CPU
, V
DAC
REF_DDR
GMCH
®
, V
1
GMCH
and two LDO controllers to
DDQ_DDR
. The ISL6537A also
. A more complete
Application Note
, and V
DDQ_DDR
Generation Using the ISL6537A and ISL6506
/2) high current
TT_GMCH/CPU
DDQ_DDR
DDQ
and V
,
Embedded ACPI Compliant DDR Power
1-888-INTERSIL or 1-888-468-3774
/2
TT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
.
As there are seven regulated rails, it is difficult to exercise
and monitor all of them at the same time. The user may wish
to employ discrete resistive loads in addition to electronic
loads. Electronic loads are favored because they allow the
user to apply a multitude of varying load levels and load
transients which allow for a broader analysis.
Circuit Setup
SET SWITCHES
Ensure that the S3 switch is in the ACTIVE position and the
S5 switch is in the S5 position. With the switches in these
positions, the board will be forced into a sleep state at initial
power up.
CONNECT THE ATX SUPPLY
Plug the 20-pin connector from the ATX power supply into
the 20-pin receptacle, J1, on the evaluation board. Should
the ATX power supply have a master AC switch, turn this
switch to the OFF position prior to applying AC voltage.
CONNECT LOADS
Figure 1 details the locations of the available power, ground,
and signal connection points on the ISL6537A_6506EVAL1Z
evaluation board. The maximum loads specified for each rail
below are absolute. V
V
the V
Schematic” on page 10). Any loading of a cascaded rail will
itself be a load on the rail that is providing input and must be
accounted for prior to application of loads.
DDQ_DDR
FIGURE 1. ISL6537A_6506EVAL1Z BOARD POWER AND
KEY
January 15, 2007
GMCH
(VDAC)
(VGMCH)
(VTT_GMCH/CPU)
All other trademarks mentioned are the property of their respective owners.
ATX
CONNECTOR
|
- Ground Terminal for Load and/or Probe Ground Clip
- Output Rail Terminal for Load and/or Probe
- Probe Point
rail (refer to “ISL6537A_6506EVAL1Z
Intersil (and design) is a registered trademark of Intersil Americas Inc.
rail while the V
ISL6537A_6506EVAL1Z
ISL6506
SIGNAL CONNECTIONS
(SWITCHES)
Copyright Intersil Americas Inc. 2007. All Rights Reserved
TT_DDR
TT_GMCH/CPU
(5VDUAL)
(3VDUAL)
S3
is cascaded from the
SLP_S3#
Author: Douglas Mattingly
VCC3
SLP_S5# PWR_OK VREF_OUT
S5
12V
5VSBY
VCC5
ISL6537A
3VDUAL
5VDUAL UGATE
VID_PG
is cascaded from
VREF_IN
AN1124.0
LGATE
(DDR_VTT)
(VDDQ)

Related parts for ISL6537A-6506EVAL1Z

ISL6537A-6506EVAL1Z Summary of contents

Page 1

... SLP_S3 and SLP_S5 signals that are sent to the ISL6506, ISL6537A and the ATX. Recommended Test Equipment To test the full functionality of the ISL6537A and ISL6506, the following equipment is recommended: • An ATX power supply (minimum 160W configuration) • Multiple electronic loads • ...

Page 2

... Reference Design General The ISL6537A_6506EVAL1Z is an evaluation board that TT_DDR highlights the operation of the ISL6537A and ISL6506 in an embedded ACPI and DDR DRAM Memory Power application. The V supply 1. maximum load of 15A. The V termination supply will track the V while sourcing or sinking current ...

Page 3

If both the S3 and S5 switches are thrown to S3 and S5, respectively, the board will default state. If the board is in either sleep state, the ATX supply is put into ...

Page 4

... Application Note 1124 When PCIRST# asserts HIGH, bus traffic resumes and the system is awake. The ISL6506 and ISL6537A chipset bring all the ACPI rails under their control into regulation between time T3 and T4. V This timing assures, even with minimum specified system ...

Page 5

... GMCH regulator. Start-up until the V When entering a sleep state, the V below the V to ramp down. A circuit was included on the ISL6537A evaluation board that will keep a 0.7V differential between the V V rails until the V DAC also discharge the V a sleep state. This circuit is shown in Figure 7. During Start- up, the base-emitter junction of Q302 maintains a 0 ...

Page 6

V DDQ_DDR 20mV/DIV AC COUPLED V GMCH 50mV/DIV AC COUPLED V UGATE(GMCH) 10V/DIV TIMEBASE: 1ms/DIV FIGURE 8. V and V RIPPLE VOLTAGE DDQ GMCH Transient Performance Figures 9 through 14 show the response of the outputs when subjected to a ...

Page 7

FET. Figure 12 shows V under transient loading. GMCH V (1.8V OFFSET) DDQ_DDR V (0.9V ...

Page 8

V DAC V DDQ_DDR V GMCH V TT_GMCH/CPU VIDPG 5V/DIV TIMEBASE: 50ms/DIV NOTE: ALL SIGNALS AT 500mV/DIV UNLESS OTHERWISE STATED 100Ω LOAD ON ALL RAILS FIGURE 16. FAULT RESPONSE ON VTT V DAC V DDQ_DDR V GMCH ...

Page 9

... ATX supply on even in sleep states. Conclusion The ISL6537A_6506EVAL1Z is a versatile platform that allows designers to gain a full understanding of the functionality of the ISL6506 and ISL6537A chipset in an ACPI compliant system. The board is also flexible enough to allow the designer to modify the board for differing requirements. The following regulator, pages provide a schematic, bill of materials, and layout drawings to support implementation of this solution ...

Page 10

... ISL6537A_6506EVAL1Z Schematic J1 3 PSON S3# Rx11 13 S5# GND 5VSBY C500 ISL6506 1 VCC 2 3V3AUX 3 S3# S3# 4 S5# S5# 9 R100 VID_PG 12VATX 3V3ATX ISL6613 + U3 C300 C303 BT VGMCH UG PWM L201 PS + GND C302 C303 LG Q302 R305 C309 R306 C306 VGMCH C310 R304 R303 Q400 R400 VTT_GMCH/CPU + C401 ...

Page 11

... ISL6537A_6506EVAL1Z Bill of Material REF DES DESCRIPTION C100, 101, 201, 1µF, X5R Capacitor 202, 307, 308 C204-206 2200µF, 6.3V MBZ Capacitor C207, 208, 209, 1800µF, 16V MBZ Capacitor 301, 304, 400, 605, 607 C106, 300, 305, 220µF, 25V 601, 602, 603 C105, 210-213, 22µ ...

Page 12

... ISL6537A_6506EVAL1Z Layout 12 Application Note 1124 FIGURE 21. TOP SILK SCREEN FIGURE 22. TOP AN1124.0 January 15, 2007 ...

Page 13

... ISL6537A_6506EVAL1Z Layout 13 Application Note 1124 (Continued) FIGURE 23. INTERNAL 1 GROUND FIGURE 24. INTERNAL 2 POWER AN1124.0 January 15, 2007 ...

Page 14

... ISL6537A_6506EVAL1Z Layout Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

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