USER’S MANUAL
AN1948
Rev 0.00
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Demonstration Board
AN1948 Rev 0.00 Page 1 of 26
Sep 25, 2014
Description
The ZL8801 is a dual-phase digital DC to DC controller
optimized for current sharing. As many as 4 ZL8801’s can be
operated in parallel to provide even phase counts between 2
and 8 phases. The ZL8801 incorporates compensation-free
ChargeMode control to achieve single-cycle transient response.
The ZL8801 supports a wide range of output voltages (0.54V
to 5.5V) operating from input voltages between 4.5Vand 14V.
The ZL8801-4PH-DEMO1Z evaluation board is a 6-layer board
configured as a 4-phase 160A synchronous buck converter.
Sequencing, margining, fault spreading and other features can
be evaluated using this board.
A USB to PMBus™ adapter module is used to connect the
evaluation board to a host PC running Microsoft Windows.
Specifications
Key Features
• 160A 4-phase synchronous buck converter with
ChargeMode™ control
•On-the-fly V
OUT control
• Configurable with PMBus
•V
IN range 4.5V to 14V
•V
OUT range 0.54V to 3.6V
•I
2C/SMBus interface, PMBus compatible
• Output voltage and current protection
References
•ZL8801 datasheet
TABLE 1. EVALUATION BOARD SPECIFICATIONS
SPEC DESCRIPTION MIN TYP MAX UNIT
VIN Input Voltage Range 6.5 14 V
VOUT Output Voltage Range, Default
VOUT = 1V
0.6 3.6 V
IOUT Rated Output Current 0 160 A
fSW Switching Frequency 400 1000 kHz
VRIPPLE Output Ripple Voltage ±1 %
Ordering Information
PART NUMBER DESCRIPTION
ZL8801-4PH-DEMO1Z ZL8801 Demonstration Kit
(Demonstration Board, USB Adapter,
Cable)
AN1948 Rev 0.00 Page 2 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 1. ZL8801-4PH-DEMO1Z BOARD
AN1948 Rev 0.00 Page 3 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
VIN
VDRV
VOUT
PG
EN
ZL8801
SCL
SDA
GND
PG0
DDC
VSEN0P
VSEN0N
ISENA0
ISENB0
PWML0
PWMH0
PWMH1
PWML1
ISENB1
ISENA1
VDD
EN0
SY NC
ZL8801
SCL
SDA
GND
PG0
DDC
VSEN0P
VSEN0N
ISENA0
ISENB0
PWML0
PWMH0
PWMH1
PWML1
ISENB1
ISENA1
VDD
EN0
SY NC
SY NC
SCL
SDA
DDC
FIGURE 2. ZL8801-4PH-DEMO1Z BLOCK DIAGRAM
AN1948 Rev 0.00 Page 4 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Functional Description
The ZL8801-4PH-DEMO1Z provides all circuitry required to
demonstrate most of the features of the ZL8801 in a multidevice
current sharing application. The ZL8801-4PH-DEMO1Z has a
functionally-optimized ZL8801 circuit layout that allows efficient
operation up to the maximum output current (with airflow).
Power and load connections are provided by Banana jacks.
When the ZL8801-4PH-DEMO1Z board is removed from the
shipping box it is ready to be powered on by using the Enable
Switch. PMBus operation can be configured by using the
PowerNavigator™ GUI. Headers are provided at opposite ends of
the board for connecting a USB to SMBus Dongle and for daisy
chaining other Intersil Digital Power Evaluation and Demo
Boards.
A majority of the features of the ZL8801, such as compensation
free ChargeMode control, soft-start delay, ramp times, supply
sequencing, and voltage margining are available on this
evaluation board. For sequencing and Fault Spreading
demonstration, the board can be connected to any other
demonstration board that supports the Digital-DC™ (DDC) bus.
Voltage Tracking is not supported on the ZL8801-4PH-DEMO1Z.
Figure 1 shows the top view of the PWB.
Operating Range
The ZL8801-4PH-DEMO1Z is preconfigured to the following
specifications:
The ZL8801-4PH-DEMO1Z’s dual ZL8801 controllers reside at
address 0x20 and 0x21. The preconfigured operation
parameters can be changed by using the PowerNavigator GUI.
The ZL8801-4PH-DEMO1Z has been optimized for a nominal
switching frequency of 515kHz, this frequency provides a good
compromise between packaging density and efficiency relative
to the selected power train. The switching frequency can be
changed to operate anywhere between 300kHz and 1000kHz.
PCB Layout Guidelines
The ZL8801-4PH-DEMO1Z Board layout has been optimized for
power density, electrical and thermal performance. The following
key features are:
•Thermal vias connected to a large common SGND plane is used
for each ZL8801 on Inner 1.
•ISENSE nets are Kelvin connected to each output inductor.
•VSENSE nets are Kelvin connected to the point of regulation.
•One SGND plane established for both ZL8801 controllers.
•SGND plane for each controller duplicated on bottom layer with
thermal vias to aid in heat removal.
Quick Start Guide
Stand Alone Operation
1. Set Enable switch to “Disable”.
2. Apply Load to VOUT+/VOUT-.
3. Connect the USB to SMBus adapter to J4 of the
ZL8801-4PH-DEMO1Z.
4. Connect the USB adapter cable to the host computer.
5. Connect VIN+/VIN- to a suitable input power source (supply
turned off).
6. Install jumpers J1 and J2 to use onboard VRDRV linear
regulator.
7. Turn input power supply on.
8. Set Enable switch to “Enable”.
9. Monitor ZL8801-4PH-DEMO1Z board with an oscilloscope.
10. To demonstrate advanced features like Sequencing, and Fault
Spreading connect other compatible Intersil Digital Power
boards to J5 and J8.
USB (PMBus) Operation
1. Set the Enable switch to “Disable”.
2. Apply load to VOUT+/VOUT-.
3. Connect the USB to SMBus adapter to J4 of the
ZL8801-4PH-DEMO1Z.
4. Connect the USB adapter cable to the host computer.
5. Connect VIN+/VIN- to a suitable input power source (supply
turned off).
6. Install jumpers J1 and J2 to use onboard VRDRV linear
regulator.
7. Install the PowerNavigator software on the host computer.
8. Turn the input power source on, the demo board comes
configured to produce an output voltage of 1.0V. Use the GUI
or modify the configuration file to operate at Vout up to 3.6V.
9. Run the PowerNavigator program and select the “Monitor
Hardware” option and then click the Start button.
10. Using the Monitor View change the enable mode to “PMBus
Enable”.
11. Click on the Enable button to turn on the
ZL8801-4PH-DEMO1Z and use the GUI to monitor.
TABLE 2.
VIN VOUT IOUT fSW
FAULT
RESPONSE
6.5V to 14V 1.0V 40A/Ph, 160A 515kHz Shutdown
AN1948 Rev 0.00 Page 5 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Default Configuration File
The ZL8801-4PH-DEMO1Z comes preconfigured with the following configuration files
ZL8801_0x20.txt and ZL8801_0x21.txt the files are printed below for convenience.
# ZL8801_0x20
RESTORE_FACTORY
STORE_DEFAULT_ALL
STORE_USER_ALL
RESTORE_DEFAULT_ALL
STORE_DEFAULT_ALL
RESTORE_USER_ALL
FREQUENCY_SWITCH 515
INTERLEAVE 0x0000
SEQUENCE 0x0000
TON_DELAY 5
TON_RISE 5
TOFF_DELAY 5
TOFF_FALL 5
TRACK_CONFIG 0x00
ON_OFF_CONFIG 0x17
VOUT_COMMAND 1.0
VOUT_MAX 3.5
VOUT_MARGIN_HIGH 1.05
VOUT_MARGIN_LOW 0.95
VOUT_MARGIN_RATIO 0xCA80
VOUT_DROOP 0.20
VOUT_OV_FAULT_LIMIT 1.20
VOUT_OV_FAULT_RESPONSE 0x80
VOUT_UV_FAULT_LIMIT 0.80
VOUT_UV_FAULT_RESPONSE 0X80
VOUT_CAL_OFFSET 0.0
VOUT_TRANSITION_RATE 1.0
MIN_VOUT_REG 150
VIN_OV_WARN_LIMIT 13.0
VIN_OV_FAULT_LIMIT 14.4
VIN_OV_FAULT_RESPONSE 0x80
VIN_UV_WARN_LIMIT 6.50
VIN_UV_FAULT_LIMIT 6.00
VIN_UV_FAULT_RESPONSE 0x80
POWER_GOOD_ON 0.90
POWER_GOOD_DELAY 5.00
IOUT_OC_FAULT_LIMIT 62
IOUT_UC_FAULT_LIMIT -50.0
IOUT0_CAL_GAIN 0.25
IOUT0_CAL_OFFSET -1.60
IOUT1_CAL_GAIN 0.25
IOUT1_CAL_OFFSET -1.60
IOUT_AVG_OC_FAULT_LIMIT 62.0
IOUT_AVG_UC_FAULT_LIMIT -62.0
IIN_CAL_GAIN 0.0
OT_WARN_LIMIT 110.0
OT_FAULT_LIMIT 125.0
OT_FAULT_RESPONSE 0x80
UT_WARN_LIMIT -30.0
UT_FAULT_LIMIT -45.0
UT_FAULT_RESPONSE 0x80
DEADTIME 0x0C0C
DEADTIME_CONFIG 0x8686
DEADTIME_MAX 0x0C0C
ISENSE_CONFIG 0x5A04
USER_CONFIG 0x0603
MFR_USER_CONFIG 0x0002
DDC_CONFIG 0x103
OVUV_CONFIG 0x00
DEADTIME 0x2020
DEADTIME_CONFIG 0x8686
ASCR_CONFIG 0x15A00C8
TRACK_CONFIG 0x00
DDC_GROUP 0x202000
USER_GLOBAL_CONFIG 0x0002
STORE_USER_ALL
# ZL8801-1 0x21
RESTORE_FACTORY
STORE_DEFAULT_ALL
STORE_USER_ALL
RESTORE_DEFAULT_ALL
STORE_DEFAULT_ALL
RESTORE_USER_ALL
FREQUENCY_SWITCH 515
INTERLEAVE 0x0000
SEQUENCE 0x0000
TON_DELAY 5
TON_RISE 5
TOFF_DELAY 5
TOFF_FALL 5
TRACK_CONFIG 0x00
ON_OFF_CONFIG 0x17
VOUT_COMMAND 1.0
VOUT_MAX 3.5
VOUT_MARGIN_HIGH 1.05
VOUT_MARGIN_LOW 0.95
VOUT_MARGIN_RATIO 0xCA80
VOUT_DROOP 0.20
VOUT_OV_FAULT_LIMIT 1.20
VOUT_OV_FAULT_RESPONSE 0x80
VOUT_UV_FAULT_LIMIT 0.80
VOUT_UV_FAULT_RESPONSE 0x80
VOUT_CAL_OFFSET 0.0
VOUT_TRANSITION_RATE 1.0
MIN_VOUT_REG 150
VIN_OV_WARN_LIMIT 13.0
VIN_OV_FAULT_LIMIT 14.4
VIN_OV_FAULT_RESPONSE 0x80
VIN_UV_WARN_LIMIT 6.50
VIN_UV_FAULT_LIMIT 6.00
VIN_UV_FAULT_RESPONSE 0x80
POWER_GOOD_ON 0.90
POWER_GOOD_DELAY 5.00
IOUT_OC_FAULT_LIMIT 62
AN1948 Rev 0.00 Page 6 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
IOUT_UC_FAULT_LIMIT -50.0
IOUT0_CAL_GAIN 0.25
IOUT0_CAL_OFFSET -1.60
IOUT1_CAL_GAIN 0.25
IOUT1_CAL_OFFSET -1.60
IOUT_AVG_OC_FAULT_LIMIT 62.0
IOUT_AVG_UC_FAULT_LIMIT -62.0
IIN_CAL_GAIN 0.0
OT_WARN_LIMIT 110.0
OT_FAULT_LIMIT 125.0
OT_FAULT_RESPONSE 0x80
UT_WARN_LIMIT -30.0
UT_FAULT_LIMIT -45.0
UT_FAULT_RESPONSE 0x80
DEADTIME 0x0C0C
DEADTIME_CONFIG 0x8686
DEADTIME_MAX 0x0C0C
ISENSE_CONFIG 0x5A04
USER_CONFIG 0x0603
MFR_USER_CONFIG 0x0004
DDC_CONFIG 0x2103
OVUV_CONFIG 0x00
DEADTIME 0xC0C
DEADTIME_CONFIG 0x8686
ASCR_CONFIG 0x15A00C8
TRACK_CONFIG 0x00
DDC_GROUP 0x202000
USER_GLOBAL_CONFIG 0x0004
STORE_USER_ALL
AN1948 Rev 0.00 Page 7 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801-4PH-DEMO1Z Schematic (Phase 1,2)
Address Set to 0x20
Place near L1
Place near L2
VIN
DDC
SALT_1,2
SCL
SDA
PG1
PG2
SYNC
HW_EN
P2A P2B
P1A
VDRV
VSEN+
VSEN-
VOUT
P1B
VMON
P1
P2
EN_DR1
EN_DR2
SG
SG
SG
SG
SDA
SCL
DDC
PG2
PG1
HW_EN
SYNC
VDRV
VIN
VSEN+
VSEN-
VOUT
VMON
1A0
FB2
1000 Ohm
R57
19.6K
PWM2
Q11
2N3904
R71 1
1uF
16V
C46
R52
1
PWM1
EN_DR1
U9
ZL8800
SCL
1
SDA
2
SALRT
3
SG
4
SA
5
VMON
6
DG 7
MGN0
8MGN1
9
VS0
10
VS1
11
PG0
12
UVLO
13
DDC
14
XTEMP0P
15
XTEMP0N
16
VTRKP
17
VTRKN
18
VSEN0P 19
VSEN0N 20
VDRVEN
21
ISENA0 22
ISENB0 23
PWML 24
PWMH0 25
PWMH1 26
PWML1 27
ISENB1 28
ISENA1 29
VDRV
30
VR6
31
VR5
32
VDD
33
IINN
34
IINP
35
V25
36
PG1
37
VSEN1N 38
VSEN1P 39
XTEMP1N
40
XTEMP1P
41
EN0
42
EN1
43
SYNC
44
EPAD
45
C45
10uF
16V
0.220nH
L2
16V
22uF
C51
R48 22.1
R54
953
C54
10uF
16V
R55
100K
2B1
1uF
16V
C53
16V
22uF
C50
R72
61.9K
R49 22.1
C58
10uF
16V
2A1
Q10
2N3904
XX3
SALT_1,2
R46
30.0K
1
3
4,32
5 8-11,33
12-15,28,34
16-26
27,35
29
31
76
30 2
U4
FDMF5821DC
C52
100p
50V
R56
6.65K
R51 22.1
FB1
1000 Ohm
EN_DR2
SG
GL2
16V
22uF
C39
R45
1
L1
0.220nH
C49
1uF
10V
C44
10uF
16V
GL1
1B0
1
3
4,32
5 8-11,33
12-15,28,34
16-26
27,35
29
31
76
30 2
U5
FDMF5821DC
SG
C40
10uF
16V
R47 22.1
C55
10uF
16V
C56
0.01uF
25V
R50
953
C43
1uF
10V
C41
10uF
16V
R53
30.0K
C57
10uF
16V
C47
100uF
6.3V
C48
100p
50V
16V
22uF
C38
AN1948 Rev 0.00 Page 8 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801-4PH-DEMO1Z Schematic (Interface)
+
Vin
Monitor
-
Interface
Disable
Monitor
Enable
VDR_IN
VDR_OUT
+
VIN
GND
+
SYNC
-
FROM PREQUEL TO SEQUEL
R6-R9 = 6.8K
+
VDRV
GND
+
VDD
Monitor
-
VIN
VDRV
VDR
Vi2c
SCL
RSVD1 RSVD1
RSVD2 RSVD2
RSVD3 RSVD3
GNDGND
GND
SALRT
SDA
DDC
MSTR_SYNC
SALRT
GND
SDA
SCL
DDC
MSTR_SYNC
ESW
MSTR_EN
MSTR_EN MSTR_EN
Vi2c
VOUT
VSEN+
VSEN-
VI2c
VDR
VDRV
VIN
SYNC
DDC
SYNC
SDA
SCL
HW_EN
VSEN+
VOUT
VSEN-
VI2c
Title
Interface
Title
Interface
Title
Interface
J4
2
4
6
1
3
5
R14
10.0K
C10
10uF
25V
C23
10uF
10V
C31
100uF
6.3V
R19
100K
XX2
C21
1uF
25V
J11
SMA_NO-POP
C12
22uF
16V
P4+
1
C9
10uF
C35
680uF
4V
R8
C30
100uF
6.3V
C26
100uF
6.3V
P2
C11
10uF
16V
C28
100uF
6.3V
C16
22uF
16V
C34
680uF
4V
P1
C29
100uF
6.3V
C13
330u
16V
C15
22uF
16V
R20
100
J1
21
R9
C25
100uF
6.3V
R6
R11
909
C33
680uF
4V
U1
REG1117A
G-ADJ
1
2
VOUT
3
VIN
4
VOUT
P6
GND
1
R12
2.74K
SW1
1
2
3
J8
2
4
6
1
3
5
R13
49.9
P3+
1
C32
100uF
6.3V
C27
100uF
6.3V
R7
J5
2
4
6
1
3
5
C14
330u
16V
C36
680uF
4V
C24
10uF
10V
R15
10.0K
XX1
J7
2
4
6
1
3
5
J3
2
1
J13
2
1
P5
GND
1
J2
21
AN1948 Rev 0.00 Page 9 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801-4PH-DEMO1Z Schematic (Phase 3,4)
Address Set to 0x21
Place near L3
Place near L4
P3B
VIN
DDC
SALT_3,4
SCL
SDA
PG3
PG4
SYNC
P4A P4B
P3A
VOUT
VMON
HW_EN
P3
P4
VSEN+
VSEN-
VDRV
EN_DR3
EN_DR4
SG
SG
SG
SG
VOUT
SDA
SCL
DDC
VSEN+
VSEN-
PG4
PG3
SYNC
VDRV
VIN
VMON
HW_EN
U6
ZL8800
SCL
1
SDA
2
SALRT
3
SG
4
SA
5
VMON
6
DG 7
MGN0
8
MGN1
9
VS0
10
VS1
11
PG0
12
UVLO
13
DDC
14
XTEMP0P
15
XTEMP0N
16
VTRKP
17
VTRKN
18
VSEN0P 19
VSEN0N 20
VDRVEN
21
ISENA0 22
ISENB0 23
PWML 24
PWMH0 25
PWMH1 26
PWML1 27
ISENB1 28
ISENA1 29
VDRV
30
VR6
31
VR5
32
VDD
33
IINN
34 IINP
35
V25
36
PG1
37
VSEN1N 38
VSEN1P 39
XTEMP1N
40
XTEMP1P
41
EN0
42
EN1
43
SYNC
44
EPAD
45
1uF
16V
C67
3A0
L3
0.220nH
SALT_3,4
C78
10uF
16V
C69
1uF
10V
1
3
4,32
5 8-11,33
12-15,28,34
16-26
27,35
29
31
76
30 2
U7
FDMF5821DC
4B1
C64
1uF
10V
C65
10uF
16V
C77
10uF
16V
R64 22.1
Q12
2N3904
R62 22.1
R74
1R59
30.0K
C62
10uF
16V
XX4
16V
22uF
C71
C61
10uF
16V
C75
10uF
16V
1
3
4,32
5 8-11,33
12-15,28,34
16-26
27,35
29
31
76
30 2
U8
FDMF5821DC
3B0
Q13
2N3904
GL4
C68
100p
50V
FB3
1000 Ohm
EN_DR3
R63
953
C66
10uF
16V
R65
1
R58
1
C76
0.01uF
25V
EN_DR4
FB4
1000 Ohm
R66
30.0K
R60 22.1
C74
10uF
16V
16V
22uF
C70
4A1
R68
21.5K
SG
PWM3
R73
61.9K
SG
0.220nH
L4
R67
953
GL3
16V
22uF
C60
1uF
16V
C72
16V
22uF
C59
C63
100p
50V
PWM4
R61 22.1
AN1948 Rev 0.00 Page 10 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801 Schematic (Power-Good Logic)
PG P1_OK P4_OKP2_OK P3_OK
PG1
PG2
PG3
PG4
VI2c
PG1
PG2
PG3
PG4
VI2c
D11
GRN
R23
10.0K
D9
GRN
R29
392
Q4
FDG6303N
S2
4
G25
D1
6
S1
1
G12
D2
3
R24
10.0K
D7
GRN
Q2
FDG6303N S2
4
G25
D1
6
S1
1
G12
D2
3
D10
GRN
D8
GRN
R26
392
Q8
FDG6303N
S2
4
D1
6
1
S1
2
G1
3
D2
5
G2
R32
10.0K
R30
10.0K
R33
392
R27
392
R28
392
Q6
FDG6303N
S2
4
D1
6
1
S1
2
G1
3
D2
5
G2
AN1948 Rev 0.00 Page 11 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Bill of Materials
ITEM QTY REFERENCE VALUE TOL RATING TYPE PCB FOOTPRINT MANUFACTURER PART NUMBER
1 1 C9 10µF 10% 10V X7R SM0805 Taiyo Yuden LMK212B7106KG-TD
2 1 C10 10µF 10% 25V X5R SM1206 Panasonic - ECG ECJ-3YB1E106K
3 17 C11, C40, C41, C44,
C45, C54, C55, C57,
C58, C61, C62, C65,
C66, C74, C75, C77,
C78
10µF 10% 16V X5R SM0805 TDK C2012X5R1C106K/0.85
4 11 C12, C15, C16, C38,
C39, C50, C51, C59,
C60, C70, C71
22µF 20% 16V X5R SM1206 Murata GRM31CR61C226ME15L
5 2 C13, C14 330µF 20% 16V AL POLY SM_CAP_10.5X10.5_PXA_FLD United Chemi-Con APXA160ARA331MJC0G
6 1 C21 1µF 10% 25V X5R SM0603 Taiyo Yuden TMK107BJ105KA-T
7 2 C23, C24 10µF 10% 10V X7R SM0805 Murata GRM21BR71A106KE51L
8 9 C25, C26, C27, C28,
C29, C30, C31, C32,
C47
100µF 6.3V X5R SM1210 Taiyo Yuden JMK325BJ107MY-T
9 4 C33, C34, C35, C36 680µF 20% 4V AL POLY SM7343_KEMET_T530_BC Kemet T530Y687M004ATE005
10 4 C43, C49, C64, C69 1µF 10% 10V X7R SM0603 Taiyo Yuden LMK107B7105KA-T
11 4 C46, C53, C67, C72 1µF 10% 16V X7R SM0603 TDK Corporation C1608X7R1C105K
12 4 C48, C52, C63, C68 100pF 5% 50V C0G SM0402_WSS MURATA GRM1555C1H101JZ01D
13 2 C56, C76 0.01µF 10% 25V X7R SM0402 Kemet C0402C103K3RACTU
14 5 D7, D8, D9, D10, D11 GRN 2V SM0805 Chicago Miniature CMD17-21VGC
15 4 FB1, FB2, FB3, FB4 1000Ω150mA Ferrite SM0402 Taiyo Yuden BK1005HM102-T
16 4 J1, J2, J3, J13 2 POS VERT SIP2/100 Samtec TSW-102-07-L-S
17 2 J4, J7 HDR_3X2_RA RA HDRM3DUALRA100X100 SAMTEC TSW-103-08-T-D-RA
18 2 J5, J8 SKT_3X2_RA RA HDRF3DUALRA100X100 SAMTEC SSQ-103-02-T-D-RA
19 1 J11 SMA_NO-POP SMA_PCB_VJACK Emerson 142-9701-211
20 4 L1, L2, L3, L4 0.220nH 70 Inductor IND_SL3732_RXXXXX ITG SL3732_R22KHF
21 2 P1, P2 JACK 15A JACK Emerson 108-0740-001
22 2 P3, P4 CON_LUG
23 2 P5, P6 GND CON_LUG
24 4 Q2, Q4, Q6, Q8 FDG6303N 25V Dual
N-Chan
SC70_6 Fairchild FDG6303N
25 4 Q10, Q11, Q12, Q13 2N3904 40V NPN SOT-23 ON SEMI MMBT3904LT1G
26 4 R6, R7, R8, R9 6.8k 1% 1/16W SM0402 Panasonic - ECG ERJ-2RKF6801X
27 1 R11 909 1% 100mW THK FILM SM0603 Panasonic - ECG ERJ-3EKF9090V
28 1 R12 2.74k 1% 100mW THK FILM SM0603 Panasonic - ECG ERJ-3EKF2741V
29 1 R13 49.9 1% 100mW THK FILM SM0402 Panasonic - ECG ERJ-2RKF49R9X
30 2 R14, R15 10.0k 1% 63mW THK FILM SM0402 Panasonic - ECG ERJ-2RKF1002X
31 1 R19 100k 1% 63mW THK FILM SM0402 Panasonic - ECG ERJ-2RKF1003X
32 1 R20 100 1% 100mW THK FILM SM0805 Panasonic - ECG ERJ-6ENF1000V
33 4 R23, R24, R30, R32 10.0k 1% 1/16W SM0402 Yageo RC0402FR-0710KL
34 5 R26, R27, R28, R29,
R33
392 1% THK FILM SM0603 Panasonic - ECG ERJ-3EKF3920V
AN1948 Rev 0.00 Page 12 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
35 6 R45, R52, R58, R65,
R71, R74
1 1% 1/16W SM0603 Panasonic - ECG ERJ-3RQF1R0V
36 4 R46, R53, R59, R66 30.0k 1% 1/16W SM0603 Panasonic - ECG ERJ-2GEJ303X
37 8 R47, R48, R49, R51,
R60, R61, R62, R64
22.1 1% SM0402 Panasonic ERJ-2RKF22R1X
38 4 R50, R54, R63, R67 953 1% Resistor SM0603 Panasonic ERJ-3EKF9530V
39 1 R55 100k 1% 1/16W SM0402 Vishay/Dale CRCW0402100KFKED
40 1 R56 6.65k 1% 1/16W SM0402 Panasonic - ECG ERJ-2RKF6651X
41 1 R57 19.6k 1% 1/16W SM0402 Panasonic - ECG ERJ-2RKF1962X
42 1 R68 21.5k 1% 1/16W SM0402 Panasonic - ECG ERJ-2RKF2152X
43 2 R72, R73 61.9k 1% 1/16W SM0402 Panasonic - ECG ERJ-2RKF6192X
44 1 SW1 SW_SPDT PCB
VERT
SW_TOG_ULTRAMIN_SPDT NKK G13AP-RO
45 1 U1 REG1117A SOT_223_1234 Texas Instruments REG1117A
46 4 U4, U5, U7, U8 FDMF5821DC 30V PQFN31_SPS_5X5_P5S Fairchild FDMF5821DC
47 2 U6, U9 ZL8800 MLF44_7X7_DP Intersil ZL8801
Bill of Materials (Continued)
ITEM QTY REFERENCE VALUE TOL RATING TYPE PCB FOOTPRINT MANUFACTURER PART NUMBER
AN1948 Rev 0.00 Page 13 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Typical Performance Curves
FIGURE 3. EFFICIENCY VIN = 12V, fSW = 300kHz FIGURE 4. EFFICIENCY VIN = 12V, fSW = 400kHz
FIGURE 5. EFFICIENCY VIN = 12V, fSW = 515kHz FIGURE 6. EFFICIENCY VIN = 12V, fSW = 615kHz
FIGURE 7. EFFICIENCY VIN = 12V, fSW = 800kHz
50
55
60
65
70
75
80
85
90
95
100
0 20 40 60 80 100 120 140 160
1.0V
1.2V 1.5V 1.8V 2.5V
LOAD CURRENT (A)
EFFICIENCY (%)
50
55
60
65
70
75
80
85
90
95
100
0 20 40 60 80 100 120 140 160
1.0V
1.2V 1.5V 1.8V 2.5V
LOAD CURRENT (A)
EFFICIENCY (%)
50
55
60
65
70
75
80
85
90
95
100
1.0V
1.2V
1.5V 1.8V 2.5V
0 20 40 60 80 100 120 140 160
LOAD CURRENT (A)
EFFICIENCY (%)
50
55
60
65
70
75
80
85
90
95
100
0 20 40 60 80 100 120 140 160
1.0V
1.2V
1.5V 1.8V 2.5V
LOAD CURRENT (A)
EFFICIENCY (%)
50
55
60
65
70
75
80
85
90
95
100
0 20 40 60 80 100 120 140 160
1.0V
1.2V
1.5V 1.8V 2.5V
LOAD CURRENT (A)
EFFICIENCY (%)
AN1948 Rev 0.00 Page 14 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
Measured Data
FIGURE 8. STATIC RIPPLE FIGURE 9. TURN-OFF RAMP
FIGURE 10. TURN-ON RAMP FIGURE 11. TRANSIENT RESPONSE
8mVP-P
VOUT
TYPICAL STATIC OUTPUT RIPPLE VOLTAGE
VOUT = V, IOUT =50A, VIN = 12V, fSW = 515kHz
TYPICAL IMMEDIATE OFF TURN-ON RAMP
VOUT = 1V, fSW = 515kHz, IOUT = 50A
VOUT = 1V
RESONANT ARTIFACT DUE
TO ELECTRONIC
LOAD CABLE INDUCTANCE
VIN = 12V, VOUT = 1V, fSW = 515kHz, IOUT = 50A
TYPICAL TURN-ON RAMP
MULTI_PHASE_RAMP_GAIN = 1
TUNE WITH MIN_VOUT_REG
AN MULTI_PHASE_RAMP_GAIN
TO MINIMIZE
200mV START-UP ANOMALY
TRANSIENT RESPONSE IOUT = 20 TO 40A 10A/µs
VIN = 12V, VOUT = 1V, fSW = 515kHz
ASCR GAIN = 275, RESIDUAL = 100
VOUT = 1V VP-P = 30mV
VSYNC
AN1948 Rev 0.00 Page 15 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801-4PH-DEMO1Z Evaluation Board and Dongle
FIGURE 12. ZL8801-4PH-DEMO1Z CRITICAL COMPONENT LOCATION
KELVIN CONNECTED VOUT
MEASUREMENT CONNECTION
ZL8801s
INSERT JUMPERS TO USE
ON BOARD VDRV REGULATOR
J1, J2
CONNECT OTHER INTERSIL
DIGITAL POWER BOARDS HERE
EXTERNAL VDRV INPUT
TYPICALLY USED FOR EFFICIENCY
MEASUREMENTS. REMOVE J1, J2 AND
CONNECT +5V EXTERNAL VDRV VOLTAGE
KELVIN CONNECTED VIN
MEASUREMENT CONNECTION
INPUT VOLTAGE CONNECTION
CONNECT USB TO
PMBus DONGLE HERE
ENABLE
SWITCH
RAIL PG
LAMP
OUTPUT VOLTAGE CONNECTION
FIGURE 13. USB TO PMBus DONGLE
USB CONNECTION TO
HOST COMPUTER
CONNECT TO
ZL8801-4PH-DEMO1Z J4
DEMO BOARD
AN1948 Rev 0.00 Page 16 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
ZL8801-4PH-DEMO1Z Layout
FIGURE 14. TOP SILKSCREEN
AN1948 Rev 0.00 Page 17 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 15. TOP ETCH
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 18 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 16. INNER 1
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 19 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 17. INNER 2
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 20 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 18. INNER 3
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 21 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 19. INNER 4
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 22 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 20. INNER 5
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 23 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 21. INNER 6
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 24 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 22. BOTTOM ETCH
ZL8801-4PH-DEMO1Z Layout (Continued)
AN1948 Rev 0.00 Page 25 of 26
Sep 25, 2014
ZL8801-4PH-DEMO1Z
FIGURE 23. BOTTOM SILKSCREEN
ZL8801-4PH-DEMO1Z Layout (Continued)
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