an1126

ISL6565BEVAL1: Voltage Regulator Down
Solutions for Intel Designs
®
Application Note
February 2004
AN1126
Author: Shawn Evans
Introduction
ISL6565B VRD Reference Design
The Intel family of microprocessors continues to increase in
size with the addition of its next generation microprocessors.
These newer processors are the most advanced pieces of
silicon Intel has developed, requiring advanced power
management solutions that have strict requirements for core
voltage, transient response, and peak current demands.
Responding to the increasing needs of these new Intel
processors, Intersil introduces the ISL6565B and ISL6605
chipset to enable the next generation of power management
solutions.
The evaluation kit consists of the ISL6565BEVAL1
evaluation board, associated data sheets on the ISL6565B
controller and ISL6605 driver, as well as this application
note. The evaluation board is designed to meet the output
voltage and current specifications, shown in Table 1, with the
VID DIP switches (U7 or U8) set to 100101 (1.400V).
TABLE 1. ISL6565BEVAL1 DESIGN PARAMETERS
MAX
TYPICAL
MIN
No Load VCORE Regulation
1.400V
1.380V
1.360V
Intersil ISL6565B and ISL6605
VCORE Tolerance
+20mV
The ISL6565B controller IC and three ISL6605 Driver ICs
work together to create a versatile three-phase power
management solution. The ISL6565B is tailored specifically
to accommodate Intel’s next generation microprocessor
specifications, while the ISL6605 is a high efficient singlephase driver, capable of handling the stresses of high
current loads. The ISL6565BEVAL1 combines these four ICs
to form a highly integrated solution for Intel’s high current,
high slew-rate applications.
Load Line Slope
The ISL6565B regulates core voltage, balances the phase
currents, and provides protective features for two or three
synchronous buck converter channels. The controller uses a
6-bit DAC, giving the user a digital interface to select the
output voltage, which is precisely regulated to ±0.5%
accuracy using differential remote voltage sensing. The
ISL6565B also has DCR current sensing to balance the
channel currents and give the user control of the output
voltage over load current. Other features of the controller
include over-current and under-voltage protection, internal
temperature compensation, programmable voltage offset,
and dynamic VID circuitry. For more information about the
ISL6565B, consult the data sheet [1].
The ISL6605 is a high frequency, MOSFET driver, which
drives multiple N-channel power MOSFETs. With a 4A sink
current capability, fast rise and fall times, and short dead
times, the ISL6605 can drive up to three upper and three
lower MOSFETs efficiently, pushing load currents as high as
40A per phase. With the addition of adaptive shoot through
technology, the ISL6605 is the premium driver to use with
the ISL6565B controller to create a full power management
solution. For further details on the ISL6605, consult the data
sheet [2].
The Intersil multi-phase family controller and driver portfolio
continues to expand with new selections to better fit our
customer’s needs. Refer to our web site for updated
information: www.intersil.com.
1
PARAMETER
1.0mΩ
Continuous Load Current
5A
Load Current Step
95A
Load Current Transient
-20mV
100A/µs
The evaluation board provides convenient test points, two
types of power supply connectors, a dynamic VID test
circuit, and an on-board transient load generator to facilitate
the evaluation process. On board LEDs are present to
indicate the status of the PGOOD and OVP signals. The
board is configured for down conversion from 12V to the
DAC setting.
The printed circuit board is implemented in 4-layer, 1-ounce
copper. Layout plots and part lists are provided at the end of
the application note for this design.
Quick Start Evaluation
VID Setup
The ISL6565BEVAL1 board has two options for VID
selection, a Static VID mode and a Dynamic VID mode.
When in static VID mode the VID code, set by the Static DIP
switch (U7), will not change during operation. If the dynamic
VID mode is chosen, the regulator will start up with the VID
code dictated by the Dynamic VID DIP switch (U8). This VID
code can then be changed during the operation of the
regulator to test the dynamic VID circuitry of the ISL6565B.
Toggling the VID SELECT switch (S6) will change between
the two modes (static and dynamic) of operation.
The Static and Dynamic VID DIP switches (U7 and U8) are
preset to 100101 (1.400V). If another output voltage level is
desired, refer to page 14 of the ISL6565B data sheet for the
complete DAC table and change the VID switches
accordingly. Note that changing the VID states will
change the dynamics of the load generator.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1126
Jumper Setup
On-Board Load Transient Generator
There are two jumpers on the ISL6565BEVAL1 that must be
populated before the board is powered. J1 selects the VCC
voltage to the ISL6565B controller. This jumper is preset to
5V, but can be changed to 12V if desired. J2 sets the method
by which the ENLL pin of the controller will be connected.
This jumper is preset to the 5V setting, so that this pin is
always connected high. This jumper can only be changed to
the VID setting if the dynamic VID circuit is in use. Before
connecting the power supplies to the board, place switches
S1 and S2 in the “OFF” position.
Most bench-top electronic loads are not capable of
producing the current slew rates required to emulate modern
microprocessors. For this reason, a discrete transient load
generator is provided on the evaluation board, see Figure 1.
The generator produces a load pulse of 225µs in duration
with a period of 27ms. The pulse magnitude is approximately
95A with rise and fall slew rates of approximately 100A/µs as
configured. The short load current pulse and long duty cycle
is required to limit the power dissipation in the load resistors
(R47-R51) and MOSFETs (Q21, Q22). To engage the load
generator simply place switch SW2, in the “ON” position.
VCC12
R41
46.4kΩ
HS
VSS
2
R42
ON
402Ω
OFF
S3
R44
562Ω
R43
VCORE
BAV99LT1
S4
R48
0.033Ω
R49
0.033Ω
249Ω
R46
562kΩ
R45
Q22
HUF76129
BAV99LT1
R47
OPEN
S2
C74
22µF
M3
2N7002
Q21
HUF76129
In order to enable the controller all of the previous steps
mentioned in the “Quick Start Evaluation” section must have
been followed. If these steps have been properly followed,
the regulator is enabled by toggling the ENABLE switch (S1)
to the ON position. When S1 is switched, the voltage on the
EN pin of the ISL6565B will rise above the ENABLE
threshold of 1.31V and the controller will being its digital soft
start sequence. The output voltage ramps up to the
programmed VID setting, at which time the PGOOD
indicator will switch form red to green.
LO
U6
Power Output Connections
Enabling the Controller
HO
HIP2100
Once power is applied to the board, the PGOOD LED
indicator will begin to illuminate red. With S1 in the OFF
position, the ENABLE input of the ISL6565B is held low and
the startup sequence is inhibited.
The ISL6565BEVAL1 output can be exercised using either
resistive or electronic loads. Copper alloy terminal lugs
provide connection points for loading. Tie the positive load
connection to VCORE, terminals J3 and J4, and the
negative to ground, terminals J5 and J6. A shielded scope
probe test point, J7, allows for inspection of the output
voltage, VCORE.
LI
C72
1µF
HB
The second method of powering the ISL6565BEVAL1 board
is with bench-top power supplies. Three female-banana
jacks are provided for connection of bench-top supplies.
Connect the +5V terminal to J8, +12V terminal to J9, and the
common ground to terminal J10. Voltage sequencing is not
required when powering the evaluation board.
If the DAC code is changed from 100101(1.400V), the
transient generator dynamics must be adjusted relative to
the new output voltage level. Place a scope probe in TP9 to
measure the voltage across the load resistors and the dV/dt
across them as well. Adjust the load resistors, R34-R38, to
achieve the correct load current level. Change resistors
R30-R33 to increase or decrease the dV/dt as required to
match the desired dI/dt profile.
HI
The ISL6565BEVAL1 includes two different methods for
powering up the board. The first method allows for the use of
an ATX power supply. The 20-pin header, J13, allows for the
connection of the main ATX power connector, while the 4-pin
header, J11, connects the 12V AUX power. It is very
important that both connections are secure and the S1 and
S2 switches are in the OFF position before switching on the
ATX supply.
VDD
Input Power Connections
R50
0.033Ω
R51
0.200Ω
249Ω
J12
VLOAD
FIGURE 1. LOAD TRANSIENT GENERATOR
Application Note 1126
ISL6565B VRD Performance
Soft-Start Interval
The typical start-up waveforms for the ISL6565BEVAL1 are
shown in Figure 2. The waveforms represented in this image
show the soft-start sequence of the regulator starting into a
100A load with the DAC set to 100101 (1.40V). Before the
soft-start interval begins, VCC is above POR and ENLL is a
logic high. With these two conditions met, throwing the
ENABLE switch into the ON position causes the voltage on
the EN pin to rise above the ISL6565B’s enable threshold,
beginning the soft-start sequence. For a fixed time of 1ms,
VCORE does not move due to the manner in which soft-start
is implemented within the controller. After this delay, VCORE
begins to ramp linearly toward the DAC voltage. With the
converter running at 300kHz, this ramp takes approximately
5ms, during which time the input current, ICC12, also ramps
slowly due to the controlled building of the output voltage.
VCORE, 500mV/DIV
ICORE, 50A/DIV
0V
create a negative 20mV offset, regulating VCORE to the
typical no load voltage of 1.380V specified in Table 1. Load
line regulation is supported by the ISL6565B through the use
of a resistor (R13) connected between the FB and VDIFF
pins. The average current of the three active channels flows
out of the FB pin across this resistor, and creates a voltage
drop proportional to the output current of the converter. This
voltage drop actively changes the position of the core
voltage as the output current changes, creating an output
voltage droop. For this design, the voltage droop is
programmed to meet the set load line of 1mΩ.
The leading edge transient response of the ISL6565BEVAL1,
which meets the design specifications of Table 1, is shown in
Figure 3. In order to obtain the load current waveform
shown, a bench top load is providing a constant 5A, while
the on-board transient generator is pulsing a 95A step for
225µs. When the load step occurs, the output capacitors
provide the initial output current, causing VCORE to drop
suddenly due to the ESR and ESL voltage drops in the
capacitors. The controller immediately responds to this drop
by increasing the PWM duty cycles to as much as 66%. The
duty cycles then decrease to stabilize VCORE and the built
in load line regulation holds the output voltage at the
programmed level of 1.280V.
0A
ICC12, 10A/DIV
1.38V
0A
0V
VCORE, 50mV/DIV
PGOOD, 5V/DIV
1.28V
EN, 2V/DIV
100A
0V
LOAD CURRENT, 50A/DIV
1ms/DIV
FIGURE 2. SOFT-START INTERVAL WAVEFORMS
Once VCORE reaches the DAC set point, the internal pull
down on the PGOOD pin is released. This allows a resistor
from PGOOD to VCC to pull PGOOD high and the PGOOD
LED indicator changes from red to green.
Transient Response
The ISL6565BEVAL1 design parameters require the
regulator to support a 95A maximum load step to a 5A
continuous load. This load step will have a maximum slew
rate of approximately 100A/µs on both the rising and falling
edges. The on-board load transient generator is designed to
provide the specified load step, simulating the actual
conditions seen at the CPU socket on a motherboard.
During the transient the core voltage is required to be
regulated with a load line of 1mΩ and a tolerance of ±20mV
around this load line. In order to meet these design
parameters the controller VID is programmed to the
maximum no load voltage of 1.400V (100101). A 4.32kW
resistor (R7) is placed between the OFS pin and ground to
3
0A
PWM1, 10V/DIV
0V
PWM2, 10V/DIV
0V
PWM3, 10V/DIV
0V
5µs/DIV
FIGURE 3. RISING EDGE TRANSIENT RESPONSE
At the end of the 225µs load pulse, the load current returns
to the bench-top set level of 5A. The transient response to
this falling edge of the load is shown in Figure 4. When the
falling load step occurs, the output capacitors must absorb
the inductor current which can not fall at the same rate of the
load step. This causes VCORE to rise suddenly due to the
ESR and ESL voltage drops in the capacitors. The controller
Application Note 1126
immediately responds to this rise by decreasing the PWM
duty cycles to zero, and then increasing them accordingly to
regulate VCORE to the programmed 1.375V level.
1.38V
VCORE, 50mV/DIV
1.28V
Placing the PWM signals into a high impedance state forces
the ISL6605 drivers to turn the upper and lower MOSFETs
off, causing VCORE to fall to 0V. The controller holds the
PWM signals in this state for a period of 4096 switching
cycles, which at 300kHz is 13.5ms. The controller then reinitializes the soft-start cycle. If the load that caused the
over-current trip remains, another over-current trip will occur
before the soft-start cycle completes. The controller will
continue to try to cycle soft-start indefinitely until the load
current is reduced, or the controller is disabled. This
operation is shown in Figure 5.
100A
VID on the Fly
LOAD CURRENT, 50A/DIV
0A
PWM1, 10V/DIV
0V
PWM2, 10V/DIV
0V
PWM3, 10V/DIV
0V
5µs/DIV
FIGURE 4. FALLING EDGE TRANSIENT RESPONSE
Over-Current Protection
The ISL6565B protects the CPU if an over-current event
occurs by continuously monitoring the current through each
channel. This is done by sensing the current through each
channel’s inductor and creating a proportional current, ISEN,
which flows out of the ICOMMON pin. This ISEN current is
set by resistor R21 to be 70µA when the maximum load
current is applied. If the ISEN current for any channel ever
increases above 110µA, the ISL6565B immediately places
the PWM signals into a high impedance state.
The ISL6565B is designed to monitor the VID code from the
Intel CPU at all times, and to actively adjust the output
voltage if the VID code should change during normal
operation. To do this, the controller checks the VID inputs six
times every switching cycle. If the VID code is found to have
changed, the controller will begin executing 12.5mV DAC
steps six times per cycle until VID and DAC are equal.
To simulate a VID transition, the ISL6556BEVAL1 has an onboard dynamic VID generator which simulates a VID-on-thefly transition. Using the dynamic VID circuit requires first
toggling the VID SELECT switch (S6) to the DYNAMIC
position. The DYNAMIC VID dip switch chooses the starting
VID code for the controller. Pressing the DYNAMIC SWITCH
(S5) button begins the VID transition. The on-board circuit is
designed to transition the VID code 450mV below the
DYNAMIC VID DIP switch code in 12.5mV steps that occur
every 5µs.
1.40V
VCORE, 200mV/DIV
5V
VID12.5, 5V/DIV
VCORE, 1V/DIV
5V
1.0V
Load Current, 200A/DIV
50µs/DIV
0A
PWM1, 10V/DIV
0V
PWM2, 10V/DIV
0V
PWM3, 10V/DIV
0V
10ms/DIV
FIGURE 5. OVER-CURRENT PROTECTION
4
FIGURE 6. VID-ON-THE-FLY TRANSITION FROM 1.40V TO
0.950V
Figure 6 shows a VID-on-the-fly transition from 1.40V
(100101) to 0.950V(001011). This transition begins with the
DYNAMIC SWITCH signal transition from 5V to 0V. Every
time the VID code changes, the VID12.5 signal transitions
between 0V and 5V. During the VID transitions, as Figure 6
shows, the controller smoothly transitions from one code to
the next until the final code of 0.9500V is reached.
Application Note 1126
Pressing the DYNAMIC SELECT switch again returns the
VID code to the original setting of 1.40V, as Figure 7 shows.
This transition is handled smoothly by the ISL6565B with no
overshoot as the final code is reached.
Thermal Performance
Table 2 shows the laboratory measured upper and lower
MOSFET, inductor, and driver temperatures at 100A of load
current. The measurements were performed at room
temperature (26 °C) and taken at thermal equilibrium with
300LFM OF AIR FLOW.
1.40V
TABLE 2. THERMAL DATA AT 100A LOAD
VCORE, 200mV/DIV
COMPONENT
5V
VID12.5, 5V/DIV
PHASE 2
PHASE 3
Upper MOSFETs
73°C
65°C
76°C
Lower MOSFETs
72°C
60°C
73°C
Driver
63°C
62°C
68°C
Inductor
59°C
56°C
58°C
Summary
5V
DYNAMIC SWITCH, 5V/DIV
50µs/DIV
FIGURE 7. VID-ON-THE-FLY TRANSITION FROM 0.950V TO
1.40V
Efficiency
The efficiency of the ISL6565BEVAL1 board, loaded from 5A
to 105A, is plotted in Figure 8. Measurements were
performed at room temperature and taken at thermal
equilibrium with 300LFM OF AIR FLOW. The efficiency
peaks just below 90% at 30A and then levels off steadily to
approximately 82% at 105A. The use of air flow is
recommended for Intel’s microprocessor designs, with
300LFM as the mean. The addition of air flow keeps the
components cooler and raises the overall efficiency across
the load range.
92
90
EFFICIENCY (%)
PHASE 1
88
86
84
82
80
78
0
-20
40
60
80
LOAD CURRENT (A)
FIGURE 8. EFFICIENCY vs LOAD CURRENT
5
100
The ISL6565BEVAL1 is an adaptable evaluation tool which
showcases the performance of the ISL6565B and ISL6605
chipset. Designed to meet the performance requirements of
Intel’s next generation designs, the board allows the user the
flexibility to configure the board for current as well as future
microprocessor offerings. The following pages provide a
schematic of the board, bill of materials and layout drawings
to support implementation of this solution.
References
Intersil documents are available on the web at
www.intersil.com.
[1] ISL6565 Data Sheet, Intersil Corporation, File No.
FN9135
[2] ISL6605 Data Sheet, Intersil Corporation, File No.
FN9091
Application Note 1126
Schematic
6
Application Note 1126
Schematic (Continued)
7
Application Note 1126
Schematic (Continued)
Bill of Materials
QTY
REFERENCE
VALUE
1
C1
22pF
1
DESCRIPTION
VENDOR
PART NO.
PACKAGE
Capacitor, Ceramic, 50V, X7R, 10%
Various
0805
C2
0.022µF Capacitor, Ceramic, 50V, X7R, 10%
Various
0805
1
C3
0.01µF
Capacitor, Ceramic, 50V, X7R, 10%
Various
0805
1
C4
DNS
Capacitor, Ceramic
Various
0805
1
C5
DNS
Capacitor, Ceramic
Various
0603
7
C6, C10-C15
1.0µF
Capacitor, Ceramic, 16V, X7R, 10%
Various
0805
3
C7-C9
0.1µF
Capacitor, Ceramic, 50V, X7R, 10%
Various
0805
4
C16, C18, C20, C72
1.0µF
Capacitor, Ceramic, 16V, X7R, 10%
Various
1206
3
C17, C19, C21
2200pF Capacitor, Ceramic, 50V, X7R, 10%
Various
0805
4
C22-C25
1800µF Capacitor, AL Electrolytic, 16V
Rubycon
12
C26, C27, C32, C36,
C37, C40, C41, C45,
C47, C63, C66, C69
DNS
Capacitor, Ceramic
Various
1206
20
C28, C31, C33, C38,
C42, C46, C49-C51,
C54-C61, C64, C67,
C70
22µF
Capacitor, Ceramic, 6.3V, X5R, 20%
Various
1206
8
16MBZ1800M10X23
Thru Hole
Application Note 1126
Bill of Materials (Continued)
QTY
REFERENCE
VALUE
DESCRIPTION
10
C29, C30, C34, C35,
C39, C43, C44, C48,
C52, C53
560µF
1
C73
1
C74
22µF
Capacitor, Ceramic, 16V, X5R, 20%
TDK
2
C75, C76
2.2pF
Capacitor, Ceramic, 50V, X7R, 10%
Various
1
C77
1.0µF
Capacitor, Ceramic, 10V, X7R, 10%
4
C78, C82, C84, C86
0.01µF
Capacitor, Ceramic, 16V, X7R, 10%
Various
0603
2
C79, C80
0.1µF
Capacitor, Ceramic, 50V, X7R, 10%
Various
0603
3
C81, C83, C85
10µF
Capacitor, Ceramic, 10V, X7R, 10%
Various
1206
1
D1
Red/Green LED
Lumex
SLL-LXA3025IGC
SMT
1
D2
Red LED
Lumex
SLL-LXA1725IC
SMT
2
J1, J2
Molex HDR 1x3 1MT Hole
Molex
4
J3-J6
Terminal Connector
Burndy
KPA8CTP
Solder Mount
2
J7, J12
Probe Socket
Tektronix
1314353-00
Thru Hole
2
J8-J9
Female Banana Connector, Red
Johnson Components
111-0702-001
Screw On
1
J10
Female Banana Connector, Black
Johnson Components
111-0703-001
Screw On
1
J11
2x2 Power HDR 1MTG Hole
Molex
39-29-9042
Thru Hole
1
J13
2x10 Power Conn-1MTG Pin
Molex
39-29-9203
Thru Hole
1
L1
Inductor, T50-8/90 core, 8 turns
AWG16
Micrometals
T50-8/90
Thru Hole
3
L2-L4
Pulse
PA1513.321
Surface Mount
15
P1-P4, P6-P9, P11,
P17-P22
Small Test Point
Jolo
SPCJ-123-01
Thru Hole
8
P5, P10, P12-P16,
P23
Turret Test Point
Keystone
1514-2
Thru Hole
2
Q1, Q20
General Purpose MOSFET
Various
2N7002
SOT-23
9
Q2-Q4, Q8-Q10,
Q14-Q16
Power MOSFET
International Rectifier
IRLR7833
TO-252AA
9
Q5-Q7, Q11-Q13,
Q17-Q19
Power MOSFET
International Rectifier
IRLR7821
TO-252AA
2
Q21, Q22
Power MOSFET
Vishay
SUD50N03-07
TO-252AA
3
R1, R2, R5
2.43kΩ
Resistor, 1%, 1/16W
Various
0603
19
R3, R22, R52-R64,
R66-R68, R70
10kΩ
Resistor, 1%, 1/16W
Various
0603
1
R4
8.06kΩ
Resistor, 1%, 1/16W
Various
0603
6
R10, R14, R19,
R29-R31
0Ω
Resistor, 1%, 1/16W
Various
0603
6
R6, R9, R11, R12,
R18, R73
DNS
Resistor
Various
0603
1
R7
4.32kΩ
Resistor, 1%, 1/16W
Various
0603
1
R8
261kΩ
Resistor, 1%, 1/16W
Various
0603
1
R13
1.69kΩ
Resistor, 1%, 1/16W
Various
0603
Capacitor, OS-CON, 4V
1000pF Capacitor, Ceramic, 50V, X7R, 10%
1.0µH
0.320µH Inductor, 13x13mm
9
VENDOR
Sanyo
PART NO.
4SEPC560MX
Various
PACKAGE
Thru Hole
0603
C3225X5R1C226M
1210
0603
0805
Thru Hole
Application Note 1126
Bill of Materials (Continued)
QTY
REFERENCE
VALUE
1
R15
1.87kΩ
Resistor, 1%, 1/16W
Various
0603
1
R16
10.7kΩ
Resistor, 1%, 1/16W
Various
0603
1
R17
301Ω
Resistor, 1%, 1/8W
Various
1206
1
R20
100kΩ
Resistor, 1%, 1/16W
Various
0603
1
R21
432Ω
Resistor, 1%, 1/16W
Various
0603
1
R23
56.2kΩ
Resistor, 1%, 1/16W
Various
0603
3
R26-R28
499kΩ
Resistor, 1%, 1/16W
Various
0603
2
R32, R37
DNS
Resistor
Various
1206
2
R33, R35
0Ω
Resistor, 1%, 1/8W
Various
1206
3
R38-R40
2.2Ω
Resistor, 1%, 1/8W
Various
1206
1
R41
46.4kΩ
Resistor, 1%, 1/16W
Various
0603
1
R42
402Ω
Resistor, 1%, 1/16W
Various
0603
1
R43, R45
249Ω
Resistor, 1%, 1/16W
Various
0603
1
R44, R46
562Ω
Resistor, 1%, 1/16W
Various
0603
1
R47
DNS
Thick Film Chip Resistor
Various
2512
2
R48, R49, R50
0.033Ω
Thick Film Chip Resistor, 1%, 1W
Various
2512
1
R51
0.200Ω
Thick Film Chip Resistor, 1%, 1W
Various
2512
1
R65
100kΩ
Resistor, 1%, 1/16W
Various
0603
1
R69
48.7kΩ
Resistor, 1%, 1/16W
Various
0603
1
R71
60.4kΩ
Resistor, 1%, 1/16W
Various
0603
1
R72
340kΩ
Resistor, 1%, 1/16W
Various
0603
1
R74
249kΩ
Resistor, 1%, 1/16W
Various
0603
3
S1, S2, S6
Switch SPDT, Ultra Mini Toggle
C&K Components
GT11MSCKE
SMD
2
S3, S4
Dual Diode
Various
BAV99
SOT-23
1
S5
Momentary Pushbutton Switch
Panasonic
SW_EVQ_QWX
SMD
1
U1
Endura Multi-phase Controller
Intersil
ISL6565BCR
MLFP-28
1
U2
Endura Multi-phase Controller
Intersil
ISL6565BCB
SOIC-28W
3
U3, U4, U5
Endura Multi-phase Driver
Intersil
ISL6605CB
SO-8
1
U6
MOSFET Driver IC
Intersil
HIP2100IB
SO-8
2
U7, U8
Low Profile DIP Switch, SPST, 6
Position
C&K Components
SD06H0SK
SMT
1
U9
8.00MHz Quartz Crystal
Citizen
HCM49-8.000MABJT
SMD
1
U10
8-bit microcontroller
Microchip
PIC16F873A-SO
SOIC-32W
1
U11, U12
Quad 2-to-1 Line Data
Selector/Multiplexer
Texas Instruments
SN74HC157D
SOIC-16
DNS
10
DESCRIPTION
VENDOR
PART NO.
PACKAGE
Application Note 1126
ISL6565BEVAL1 Layout
FIGURE 9. SILK SCREEN TOP
11
Application Note 1126
ISL6565BEVAL1 Layout (Continued)
FIGURE 10. LAYER 1: TOP COPPER
12
Application Note 1126
ISL6565BEVAL1 Layout (Continued)
FIGURE 11. LAYER 2: GROUND PLANE
13
Application Note 1126
ISL6565BEVAL1 Layout (Continued)
FIGURE 12. LAYER 3: POWER PLANE
14
Application Note 1126
ISL6565BEVAL1 Layout (Continued)
FIGURE 13. LAYER 4: BOTTOM COPPER
15
Application Note 1126
ISL6565BEVAL1 Layout (Continued)
FIGURE 14. SILK SCREEN BOTTOM
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. 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 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. 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
16
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