an1486

ISL6263AEVAL1Z, ISL6263BEVAL1Z
Evaluation Boards User Guide
®
Application Note
August 11, 2009
AN1486.0
Introduction
Interface Connections
The ISL6263AEVAL1Z and ISL6263BEVAL1Z evaluation
boards demonstrate the performance of the ISL6263A and
ISL6263B respectively. The ISL6263A and ISL6263B are
single-phase synchronous buck PWM controllers, which
feature Intersil's Robust Ripple Regulator (R3) technology.
The evaluation board design criteria is located in Table 1. An
on-board dynamic-load generator is included for evaluating
the transient-load response. The dynamic-load applies a
2.5ms pulse of 200mΩ across VOUT and GND every 30ms.
• VIN: Input voltage to the power stage of the converter
- J6: VIN positive power input
- P37: VIN positive voltage sense
- J5: VIN return power input
- P38: VIN return voltage sense
What’s Inside
Contents of this document include:
• 5V: +5V input voltage for VCC, PVCC, PGOOD-LED and
pull-up voltage rail
- J1: 5V positive input
- J2: 5V return input
• Recommended Test Equipment
• Interface Connections
• Switch Descriptions
• 3.3V: +3.3V input voltage for auxiliary circuits
- J3: 3.3V positive input
- J4: 3.3V return input
• Jumper Descriptions
• Test Point Descriptions
• +12V: +12V input voltage for the dynamic-load generator
- J11: 12V positive input
- J12: 12V return input
• Schematic
• Bill of Materials
• Silkscreen Plots
Jumper Descriptions
• Board Layout Plots
TABLE 1. EVALUATION BOARD DESIGN CRITERIA
PARAMETER
VALUE
UNITS
VIN
5 to 25
VDC
VOUT
• VOUT: Regulated output voltage from the converter
- J14: VOUT positive power output
- P5: VOUT positive voltage sense
- J13: VOUT return power output
- P9: VOUT return voltage sense
0.41200 to 1.28750
VDC
DROOP
8
mΩ
FULL-LOAD
12
ADC
PWM FREQUENCY
300
kHz
OCP
~15.5
ADC
• (QTY 1) Adjustable 25V, 5A Power Supply
• (QTY 1) Fixed 12V, 100mA Power Supply
• (QTY 1) Fixed 5V, 100mA Power Supply
• (QTY 1) Adjustable 20A Constant Current Electronic Load
• (QTY 1) Four-Channel Oscilloscope
1
• J9 − PGOOD circuit 5V input
- Shunt jumper installed during normal operation (default)
- Shunt jumper can be removed during efficiency tests
• J10 − Selects the logic state of the FDE pin
- Install shunt jumper across pins 1 and 2 for HIGH
- Install shunt jumper across pins 2 and 3 for LOW
(default)
• J16 − VDD input current measurement port
- Shunt jumper installed during normal operation (default)
- Shunt jumper replaced by DMM to measure VDD bias
current
Recommended Equipment
• (QTY 1) Digital Multi-Meter
• J7 (SRIP) − Selects the logic state of the AF_EN pin
- Install shunt jumper across pins 1 and 2 for HIGH
- Install shunt jumper across pins 2 and 3 for LOW
(default)
• J17 − VDD and PVCC input current measurement port
- Shunt jumper installed during normal operation (default)
- Shunt jumper replaced by DMM to measure VDD bias
current and PVCC bias current
• J18 − PGOOD and pull-up supply selection
- Install shunt jumper across pins 1 and 2 for 5V (default)
- Install shunt jumper across pins 2 and 3 for 3.3V (3.3V
power supply should be connected to J3 and J4)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1486
Switch Descriptions
• VIDs Test Points:
• S1 − VIDs inputs (default <00000>)
• S4 − VR_ON (enable)
- OFF − Converter is not enabled (default)
- ON − Converter is enabled
TABLE 2. VID TEST POINT DESCRIPTIONS
TEST POINT (SILKSCREEN) FUNCTION DESCRIPTION
• S5 − Transient load generator
- OFF − Transient load is not enabled (default)
- ON − Transient load is enabled
Test Point Descriptions
• PMON
- − IMON test point for ISL6263A
- − PMON test point for ISL6263B
• P1 (SRIP) − AF_EN
• P3 − DROOP
− COMP
P5 − VOUT positive voltage sense
P6 − PGOOD
P7 − OCSET
P8 − VW
P9 − VOUT return voltage sense
P11 − VSEN
P12 − FB
P13 − VSS
P14 − SOFT
P16 − FDE
P17 − VDIFF after R30 network analyzer port
P20 − VR_ON
P21 − VDIFF
P22 (VCCP) − VO
P26 − VSS
P29 − VIN
P30 − VSUM
P32 − VDD
P34 (+5V) − PVCC
P35 − UGATE
P36 − LGATE
P37 − VIN positive voltage sense
P38 − VIN return voltage sense
• P4
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
2
P25
VID4
P27
VID3
P28
VID2
P31
VID1
P33
VID0
− PHASE (for oscilloscope probe)
J22 − VOUT positive voltage sense to VOUT return
• J20
•
voltage sense (for oscilloscope probe)
• J23
− Transient load (for oscilloscope probe)
Resistor Current Sense Configuration
The evaluation board is pre-configured with inductor DCR
current sense. It also provides the option of resistor current
sense for more precise overcurrent protection and current
monitor. Follow the following procedure to configure the
resistor current sense:
Step 1:
Replace R60 with the current sense shunt resistor
Step 2:
Remove R50 and R53
Step 3:
Place R52 and R54 with 0Ω resistors
Step 4:
Follow the datasheet to configure other resistor
current sense and overcurrent protection
components.
Dynamic Load Generator
The evaluation board provides an on-board dynamic load
generator for evaluating the transient-load response, which
is controlled by switch S4. The dynamic load generator
applies a 2.5ms pulse load across VOUT and GND. The
transient load slew-rate can be trimmed by adjusting the
resistor R74 for the rising edge, and resistor R73 for the
falling edge. A +12V power supply is needed to power the
dynamic load generator.
AN1486.0
August 11, 2009
J9
1 2
100
SD05H0SK
10K
R13
R2
510
R1
510
R47
F
ON
ON
ON
ON
ON
P33
S1
RED
VID1
5
4
3
2
1
GRN
VID0
P31
D3
P28
5V
1 2
P27
VID3
J1
J17
VID2
J2
P25
VID4
10K
R10
C31
10UF
C30
10
R5
J4
C83
68UF
C82
68UF
1UF
C32
C5B
10UF
C4
P38
PGND
J5
R16
22PF
2.21K
C27
1UF
C26
OPEN
OPEN
C12
C22
C
P7
68PF
C15
R21
R4
12.4K
C3
P36
10UF
C70
10UF
C17
C66
C65
10UF
C60
10UF
10UF
C52
10UF
C54
C46
10UF
C36
10UF
330UF
P5
J22
P9
R27
J13
R20
C6
0
R7
OPEN
OPEN
R15
P3
0.1UF
4.53K R26
R29
OPEN
3.57K
R24
20
C9
560PF
R12
R23
4.99K
20
R19
200K
R11
C5
180PF
7.5K
C13
1000PF
0.1UF
0
C89
R53
C35
R52
OPEN
P17
OPEN
R54
0
0
R50
0.88UH
VOUT
C2
Q4
L1
R60
330UF
Q2
OPEN
0
C10
C1
0.22UF
R48
RTN
DROOP
DFB
VO
VSUM
VIN
VSS
VDD
0
R30
J20
OPEN
PHASE
P21
EP
J14
D2
ISL6263AHRZ
(ISL6263BHRZ)
VID1
VID0
PVCC
LGATE
PGND
PHASE
UGATE
BOOT
Q3
R49
U1
Q1
OPEN
RBIAS
SOFT
OCSET
VW
COMP
FB
VDIFF
VSEN
P11
6.98K
P37
150K
P12
R3
10UF
IRF7821
P35
IRF7821
AF_EN
PMON
R17
FDE
PGOOD
SRIP
VR_ON
I2UA
VID4
VID3
VID2
C8
VIN
1K
P29
IRF7832
P4
R22
J6
C11
R8
10K
330PF
P22
C7
1K
P30
1000PF
10K
C19
0.082UF
C21
C14
C18
0.1UF
1000PF
1000PF
C16
OPEN
B
J11
U5
HIP2100
+12V
1UF
C80
ON
VSS
HO
LI
HS
HI
R71
LO
HB
49.9K
VOUT
VDD
R74
249
D1
R73
BAT54S
IN
HUF76129D3S
R72
Q15
499
S5
J23
AN1486.0
August 11, 2009
OPEN
R9
2N7002
J12
0.2
R6
C81
OFF
A
10UF
249
Q14
REV:
TITLE:
ISL6263AHRZ
A
(ISL6263BHRZ)
ENGINEER:
DATE:
07/07/2009
SHEET:
1
OF 1
DRAWN BY:
8
7
6
5
4
3
FIGURE 1. ISL6263AEVAL1Z AND ISL6263BEVAL1Z EVALUATION BOARDS SCHEMATIC
2
1
Application Note 1486
P14
OFF
0.018UF
P13
D
OPEN
OPEN
10K
C20
R25
ON
S4
J3
P32
R35
0
P8
P34
(IMON)
10K
3.3V
0.068UF
R14
1
2 J18
3
1X3
10
1UF
P26
C29
10K
R32
10K
10K
R36
10K
R37
10K
R18
200K
PMON
R43
J10
1
2
3
1X3
C28
IMON
VR_ON
0.01UF
P20
J7
IRF7832
3
AF_EN
R38
R40
2N7002
P1
1 2
PGOOD
1
2
3
1X3
R46
1
P6
J16
E
R39
FDE
OPEN
P16
Q5
Application Note 1486
FIGURE 2. ISL6263AEVAL1Z AND ISL6263BEVAL1Z EVALUATION BOARDS PCB TOP SILKSCREEN
4
AN1486.0
August 11, 2009
Application Note 1486
FIGURE 3. ISL6263AEVAL1Z and ISL6263BEVAL1Z EVALUATION BOARDS PCB BOTTOM SILKSCREEN
5
AN1486.0
August 11, 2009
Application Note 1486
FIGURE 4. ISL6263AEVAL1Z and ISL6263BEVAL1Z EVALUATION BOARDS PCB TOP ETCH
6
AN1486.0
August 11, 2009
Application Note 1486
FIGURE 5. ISL6263AEVAL1Z and ISL6263BEVAL1Z EVALUATION BOARDS LAYER 2 ETCH
7
AN1486.0
August 11, 2009
Application Note 1486
FIGURE 6. ISL6263AEVAL1Z and ISL6263BEVAL1Z EVALUATION BOARDS PCB LAYER 3 ETCH
8
AN1486.0
August 11, 2009
Application Note 1486
FIGURE 7. ISL6263AEVAL1Z AND ISL6263BEVAL1Z EVALUATION BOARDS PCB BOTTOM ETCH
9
AN1486.0
August 11, 2009
Application Note 1486
Bill of Materials
ISL6263AEVAL1Z and ISL6263BEVAL1Z evaluation boards use the same PCB and schematic, thus the same bill of materials except for the
controller.
NO.
REFERENCE
QTY
1
C82, C83
2
CAP, RADIAL, 68µF, 100V, 20%, ALUM.ELECTROLYTIC
PANASONIC
EEU-FC2A680L
2
C11, C13, C14, C18
4
CAP, SMD, 0603, 1000pF, 16V, 10%, X7R
GENERIC
NA
3
C28
1
CAP, SMD, 0603, 0.01µF, 16V, 10%, X7R
GENERIC
NA
4
C15, C21, C35
3
CAP, SMD, 0603, 0.1µF, 25V, 10%, X7R
GENERIC
NA
5
C27, C29
2
CAP, SMD, 0603, 1µF, 6.3V, 10%, X5R
GENERIC
NA
6
C5
1
CAP, SMD, 0603, 180pF, 10V, 10%, X7R
GENERIC
NA
7
C1
1
CAP, SMD, 0603, 0.22µF, 25V, 20%, X7R
GENERIC
NA
8
C7
1
CAP, SMD, 0603, 330pF, 10V, 5%, NPO
GENERIC
NA
9
C9
1
CAP, SMD, 0603, 560pF, 10V, 10%, X7R
GENERIC
NA
10
C12
1
CAP, SMD, 0603, 22pF, 10V, 5%, NPO
GENERIC
NA
11
C26
1
CAP, SMD, 0603, 68pF, 50V, 5%, NPO
GENERIC
NA
12
C17
1
CAP, SMD, 0603, 0.068µF, 16V, 10%, X7R
GENERIC
NA
13
C19
1
CAP, SMD, 0603, 0.082µF, 16V, 10%, X7R
GENERIC
NA
14
C8
1
CAP, SMD, 0603, 0.018µF, 10V, 10%, X7R
GENERIC
NA
15
C32, C80
2
CAP, SMD, 0805, 1.0µF, 25V, 10%, X7R
GENERIC
NA
16
C31, C36, C46, C52, C54,
C60, C65, C66, C70
9
CAP, SMD, 0805, 10µF, 6.3V, 10%, X5R
GENERIC
NA
17
C81
1
CAP, SMD, 1206, 10µF, 16V, 20%, X5R
GENERIC
NA
18
C4, C5B
2
CAP, SMD, 1812, 10µF, 25V, 10%, X5R
GENERIC
NA
19
C2, C89
2
CAP, SMD, 330µF, 2V, 20%, SP-CAP
PANASONIC
EEF-SX0D331XR
20
L1
1
INDUCTOR, SMD, 11.5X10, 0.88µH, 20%, 17.4A
NEC/TOKIN
MPC1040LR88
21
U5
1
IC-HI FREQ BRIDGE DRIVER, SO8, 100V
INTERSIL
HIP2100IB
22
U1
1
PWM CONTROLLER, 32P, QFN, 5x5
INTERSIL
ISL6263AHRZ
or
ISL6263BHRZ
23
R24
1
NTC, SMD, 0603, 10k, 1/10W, 5%, B VALUE = 4201k to
4300k
PANASONIC
ERT-J1VR103J
24
Q5, Q14
2
MOSFET, N-CH, SOT23, 60V, 115mA
MOTOROLA
2N7002LT1
25
Q15
1
MOSFET, N-CH, TO-252AA, 30V, 16mΩ
FAIRCHILD
HUF76129D3S
26
Q1
1
MOSFET, N-CH, SO8, 30V, 9.1mΩ
IR
IRF7821
27
Q2, Q4
2
MOSFET, N-CH, SO8, 30V, 4.0mΩ
IR
IRF7832
28
R39
1
RES, SMD, 0603, 1Ω, 1/10W, 1%
GENERIC
NA
29
R5, R46
2
RES, SMD, 0603, 10Ω, 1/10W, 1%
GENERIC
NA
30
R11, R12
2
RES, SMD, 0603, 20Ω, 1/16W, 1%
GENERIC
NA
31
R10, R20, R30, R48, R50,
R53
6
RES, SMD, 0603, 0Ω, 1/16W
GENERIC
NA
32
R47
1
RES, SMD, 0603, 100Ω, 1/10W, 1%
GENERIC
NA
33
R15, R35
2
RES, SMD, 0603, 1k, 1/10W, 1%
GENERIC
NA
34
R8, R13, R14, R25, R32,
R36, R37, R38, R40, R43
GENERIC
NA
10
DESCRIPTION
10 RES, SMD, 0603, 10k, 1/10W, 1%,
MFG NAME
MFG PART NUMBER
AN1486.0
August 11, 2009
Application Note 1486
Bill of Materials
ISL6263AEVAL1Z and ISL6263BEVAL1Z evaluation boards use the same PCB and schematic, thus the same bill of materials except for the
controller. (Continued)
NO.
REFERENCE
QTY
35
R4
1
RES, SMD, 0603, 12.4k, 1/16W, 1%
GENERIC
NA
36
R22
1
RES, SMD, 0603, 150k, 1/16W, 1%
GENERIC
NA
37
R18, R19
2
RES, SMD, 0603, 200k, 1/16W, 1%
GENERIC
NA
38
R16
1
RES, SMD, 0603, 2.21k, 1/16W, 1%
GENERIC
NA
39
R73, R74
2
RES, SMD, 0603, 249Ω, 1/16W, 1%
GENERIC
NA
40
R29
1
RES, SMD, 0603, 3.57k, 1/16W, 1%
GENERIC
NA
41
R27
1
RES, SMD, 0603, 4.53k, 1/16W, 1%
GENERIC
NA
42
R72
1
RES, SMD, 0603, 499Ω, 1/16W, 1%
GENERIC
NA
43
R23
1
RES, SMD, 0603, 4.99k, 1/16W, 1%
GENERIC
NA
44
R71
1
RES, SMD, 0603, 49.9k, 1/16W, 1%
GENERIC
NA
45
R1, R2
2
RES, SMD, 0603, 510Ω, 1/16W, 5%
GENERIC
NA
46
R3
1
RES, SMD, 0603, 6.98k, 1/16W, 1%
GENERIC
NA
47
R21
1
RES, SMD, 0603, 7.5k, 1/16W, 1%
GENERIC
NA
48
R60
1
RES, SMD, 2512, 0Ω, 1W, 5%
GENERIC
NA
49
R6
1
RES, SMD, 2512, 0.2Ω, 1W, 1%
DALE
WSL-2512-R200F
50
S4, S5
2
SWITCH-TOGGLE, SMD, 1P, SPST
C&K
COMPONENTS
GT11MSCKE
51
S1
1
SWITCH-DIP, SMD, DIP, 5P, SLIDE, SPST
C&K
COMPONENTS
SD05H0SK
52
D1
1
SCHOTTKY, SMD, SOT23, 3P, 30V, 200mA, DUAL DIODE
FAIRCHILD
BAT54S
53
D3
2
LED, SMD, 3x2.5mm, 4P, RED/GREEN, 12/20MCD, 2V
LUMEX
SSL-LXA3025IGC-TR
54 C3, C6, C10, C16, C20, C22,
C30, R7, R9, R17, R26, R49,
R52, R54, D2, Q3
DESCRIPTION
MFG NAME
MFG PART NUMBER
16 OPEN
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
11
AN1486.0
August 11, 2009