Intersil ISL70002SEHEVAL3Z User manual

Evaluation Board Manual
R34UH0002EU0100 Rev.1.00 Page 1
Aug 16, 2022 © 2022 Renesas Electronics
The ISL70002SEHEVAL3Z evaluation board is
designed to demonstrate the features of the
ISL70002SEH, a TID and SEE hardened 22A
synchronous buck regulator IC with integrated
MOSFETs intended for space applications. For more
detailed information about the ISL70002SEH, refer to
the ISL70002SEH Datasheet.
The ISL70002SEHEVAL3Z is similar to the
ISL70002SEHEVAL1Z, but AGND is separated from
PGND. This allows remote ground sensing to
compensate for voltage loss in the ground path.
Ground sensing is an important feature when
providing a tightly regulated core voltage for a FPGA
or microcontroller.
Features
▪Separate VOUT and GND Force and Sense
terminals
▪Optional 2x2mΩemulated trace resistance
included on board
▪3V to 5.5V input
▪Adjustable VOUT from 0.6V to 0.85×VIN
Recommended Equipment
▪A 6V power supply capable of at least 10A
▪An electronic load capable of sinking at least 12A
▪Three Digital Multimeters (DMMs)
▪A 500MHz four-channel oscilloscope
▪Optional: One differential voltage probe to measure
one signal with respect to a different ground.
Figure 1. ISL70002SEHEVAL3Z Block Diagram
VO UT
VI N
GND_SNS
GND
ISL700 02
VO UT_ SNS
GND
PG ND
50 0n H
LO AD_V OUT
LO AD_GN D
2m Ω
2mΩ
AG ND
FB
VS NS _L OAD
GSNS _LOAD
FB Network
ISL70002SEHEVAL3Z
Differential Remote Sensing Evaluation Board

R34UH0002EU0100 Rev.1.00 Page 2
Aug 16, 2022
ISL70002SEHEVAL3Z Evaluation Board Manual
Contents
1. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Quick Start Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Onboard Resistor Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Board Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Layout Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3. Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

R34UH0002EU0100 Rev.1.00 Page 3
Aug 16, 2022
ISL70002SEHEVAL3Z Evaluation Board Manual
1. Functional Description
1.1 Quick Start Instructions
1. Toggle S1 to the down (OFF) position.
2. Study Figure 2 to see how to hook up the evaluation board.
3. Turn on the power supply. Set the output voltage to 5V and set the output current limit to 10A. Turn off the power
supply output.
4. Connect the positive lead of the power supply to J1 and the negative lead of the power supply to J2.
5. Turn on the electronic load and set the output current to 5A.
6. Connect the positive lead of the electronic load to VOUT (J39) and to VOUT_SNS with two separate wires.
7. Connect the negative lead of the electronic load to GND (J40) and to GND_SNS with two separate wires.
8. (Optional) Configure one DMM to monitor the input voltage from TP7 to TP11.
9. Configure another DMM to monitor the output voltage from TP13 to TP11 or the VOUT and GND terminals.
10. Configure a third DMM to monitor the voltage on the electronic load.
11. Connect Channel 1 of the oscilloscope to J6 (or from TP33 to TP28) to monitor the rectangular waveform on
the LXx pins.
12. Connect Channel 2 of the oscilloscope to J14 (or from TP36 to TP37) to monitor the output voltage. Ripple
voltage is customarily measured AC-coupled with 20MHz bandwidth limiting.
13. Toggle S1 to the up (ON) position.
14. Verify the output voltage is 1.0V ±3% and the frequency of the LXx waveform is 1MHz ±10%.
15. Vary the load and observe VOUT at the load maintaining regulation. The voltage at the VOUT-GND terminals
should boost under increasing load to account for the resistance of the wires to the load.
16. To see more pronounced compensation, insert some intentional resistance (1-10mΩ) between the VOUT
and/or GND (force) terminals and the load. Follow the Onboard Resistor Instructions to use the onboard 2mΩ
resistors.
Figure 2. Quick Start Diagram
VO UT
VI N
GND_SNS
GND
ISL70002
VO UT_ SNS
GND
ISL70002SEHEVAL3Z
PG ND
50 0n H
LOAD_VOUT
LOAD_GND
2mΩ
2mΩ
AG ND
FB
VS N S_L OAD
GSNS_ LOAD
Power
Supply
Load
Voltmeter
Voltmeter
FB Ne twork

R34UH0002EU0100 Rev.1.00 Page 4
Aug 16, 2022
ISL70002SEHEVAL3Z Evaluation Board Manual
1.2 Onboard Resistor Instructions
1. The configuration shown in Figure 3 uses onboard series resistors to emulate resistive loss in a PCB or IC
package.
2. Install VSNS_LOAD and GSNS_LOAD jumpers.
3. Connect the DC load to the LOAD_VOUT and LOAD_GND terminals. Solder, clip, or bolt wires to the terminals.
4. Connect one voltmeter to the VOUT and GND terminals. Connect another to the VOUT_SNS and GND_SNS
terminals as shown in Figure 3.
5. Enable, disable, and modulate the DC load to observe the POL converter compensating for the trace
impedance. This includes 4mΩof onboard chip resistors and parasitic resistance of the evaluation PCB.
Observations should be similar to Figure 19.
Figure 3. On-Board Series Resistor Diagram
VO UT
VI N
GN D_S NS
GND
ISL70002
VO UT_ SNS
GND
ISL70002SEHEVAL3Z
PG ND
50 0n H
LOAD_VOUT
LOAD_GND
2mΩ
2mΩ
AG ND
FB
VS N S_L OAD
GS NS _ LOA D
Power
Supply
LOAD
Voltmeter
Voltmeter
FB Network

R34UH0002EU0100 Rev.1.00 Page 5
Aug 16, 2022
ISL70002SEHEVAL3Z Evaluation Board Manual
2. Board Design
Figure 4. ISL70002SEHEVAL3Z Evaluation Board (Top)
Figure 5. ISL70002SEHEVAL3Z Evaluation Board (Bottom)

R34UH0002EU0100 Rev.1.00 Page 6
Aug 16, 2022
ISL70002SEHEVAL3Z Evaluation Board Manual
2.1 Layout Guidelines
PCB design files are available on the ISL70002SEHEVAL3Z webpage for you to study or incorporate into your
design.
1. Use a six-layer PCB with 2 ounce (70µm) copper outer layers or an equivalent in more layers.
2. Two interior layers should be dedicated for PGND planes. In addition, place a square island of PGND on the
top layer directly underneath the body of the ISL70002SEH. Fill this area with vias to connect the top island to
the PGND planes for optimal electrical and thermal performance. The ISL70002SEHVFE parts have an
exposed metal bottom that can be soldered to the PCB. You may also use a thermal interface material such as
a Sil-Pad to ensure good thermal contact between the PCB and the IC, with or without an exposed metal
bottom.
3. Top and bottom layers should be used primarily for high-power traces ensuring the lowest impedance paths
between the input capacitors, the IC, the inductor, and the output capacitors. Where convenient, use the top
layer to connect the IC pins to the various small signal resistor and capacitors.
4. Connect all DGND and PGNDx pins to the PGND island under the part. Connect all PVINx pins to the input
power supply using the lowest resistance PCB layers (typically the top and bottom) if possible.
5. Locate a PVIN ceramic bypass capacitor as close as possible to each pair of PGNDx and PVINx pins on the
top of the PCB and connect them to the pins in the top layer.
6. Group the small signal components together near their pin(s) on U1. This should include the components that
touch pins 1-16 and 59-63.
7. Locate the output voltage resistive divider as close as possible to the FB pin of the IC. Run a VOUT sense route
from the top node of the divider directly to the positive terminal on the load. This route can be on any layer.
8. Enclose the small signal components in an AGND pour, and duplicate that pour on an interior layer. Connect
these together with multiple vias. Connect the AGND pin and passive component leads of the IC to this pour.
9. Connect the GND side of the VOUT capacitors to the PGND planes with a low impedance path back to the IC.
10. Run an AGND route from the copper pour all the way to the negative terminal of the load. Run this parallel to
the VOUT sense route that connects the FB divider to the load.
11. Use a small island of copper to connect the LXx pins of U1 to the inductor(s), L1 (and L2, if using two parallel
inductors), to minimize the routing capacitance that degrades efficiency. Separate the island from ground and
power planes as much as possible. This copper pattern may need to be replicated on multiple layers to reduce
the resistance.
12. Keep all signal traces as short as possible.
13. A small series snubber (R25 and C20) connected from the LXx pins to the PGNDx pins can be used to dampen
ringing on the LXx pins if desired.
14. For optimum thermal performance, place a pattern of vias on the top layer of the PCB directly underneath U1.
Connect the vias to the ground planes, which serve as a heatsink.

R34UH0002EU0100 Rev.1.00 Page 7
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ISL70002SEHEVAL3Z Evaluation Board Manual
2.2 Schematic Diagram
Figure 6. ISL70002SEHEVAL3Z Schematic
ON THE IC ON THE BOTTOM PLACE THESE CAPS BETWEEN THE PVINX AND PGNDX PINS
ON THE TOP AND BOTTOM OF THE BOARD
MINIMIZE ROUTING CAPACITANCE ON THESE LINES
THESE SIGNALS SHOULD BE TOWARDS THE LEFT SIDE
GND/PGND
J3 J14
5K
R23
1
2
3
1UF
C49
TP1
JP5
1 2
1UF
C10
J18
TP13
J37
J2
Default
575-6
TP5
L2
1UH
1 2
TP12
150UF
C11
12
0.01UF
C14
C25
150UF
12
10
R32
C12
0.01UF
6800PF
C9
DNP
C40
OPEN
C55
OPEN
C28
JP2
OPEN
C48
C19
150UF
12
J21
C24
150UF
12
OPEN
C54
1000PF
C20
TP11
J38
J1
Default
575-6
TP4
L1
1UH
1 2
TP10
J5
1K
R17
JP3
12
575-6
Default
J40
TP9
0.82
R42
1UF
C34
5016
TPB2
R29
DNP
OPEN
C33
R8
19.6K
DNP
C39
R39
0.002
0
R5
10
R25
TP8
P1
TP3
1.5K
R20
DNP
C46
S1
1
2
3
J19
2N7002-7-F
Q1
Default
575-6
J39
R4
0
J28
JP4
12
R43
0.82
470PF
C1
R14
1
150UF
C23
12
1UF
C50
10K
R15
R12
0
0.1UF
C38
R38
0.002
1UF
C13
1K
R24
DNP
C42
OPEN
C60
TP16
JP1
J30
1 2
R9
4.02K
R19
0
OPEN
C53
1UF
C7
J29
J32
12
OPEN
C56
150UF
C4
12
5016
TPB1
J31
1 2
OPEN
C52
J7 J24
4700PF
C17
0.82
R40
J11
OPEN
C16
1UF
C43
OPEN
C59
J41
1
2
3
4
TP17
C8
6800PF
0.82
R35
DNP
C41
S
G
SUB
D
ISL70020SEHML
Q2
1K
R16
R27
0
TP15
R30
DNP
470PF
C2
19.6K
R10
575-6
Default
BA2
R26
10
DNP
R18
OPEN
C58
0
R1
R6
0
D1
1 2
1UF
C47
C32
OPEN
150UF
C22
12
0.82
R36
J9
J13
R22
100
0.82
R44
0
R7
TP14
R31
0.82
NC
FSEL
M/S
PVIN9
LX9
PGND9
PGND10
LX10
PVIN10
SYNC
GND
TPGM
TDI
TDO
NC/HS
SC0
SC1
PVIN2
LX2
PGND2
PGND1
LX1
PVIN1
EN
OCSSB
OCB
OCSSA
OCA
HS PAD ISHEN
LX3
PGND3
PGND4
LX4
PVIN4
PVIN5
LX5
PGND5 PGND6
LX6
PVIN6
PVIN7
LX7
PGND7
LX8
PGND8
PORSEL
AGND DGND DVDD SS PGOOD
ISHCOM ISHSL
FB
ISHB
AVDD
ISHC ISHREFC ISHREFB ISHA ISHREFA
REF
PVIN3
PVIN8
ISL70002SEHVFE
U1
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
150UF
C26
12
575-6
Default
BA1
DNP
C44
OPEN
C57
TP6
1UF
C30
C21
150UF
12
OUTH OUTL
VSSP
VDRV
VSS INB IN VDD EP
U2
C15
150UF
12
C31
0.22UF
10UF
C37
0
R34
D2
1N5822US
12
1UF
C27
J34
P2
0
R2
0.1UF
C36
10UF
C51
C6
1UF
J27
0
R37
C3
470PF
J33
1
2
3
4
150UF
C5
12
1
R13
J26
R3
0
TP2
R21
1K
JP6
1 2
TP7
10K
R28
J35
1UF
C18
J23
1UF
C45
C29
OPEN
J16
10
R33
OPEN
C35
R11
4.02K
J36
1
2
3
4
R41
0.82
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AVDD
AVDD
AVDD
AVDD
DGND
DGND
DGND
DGND
DVDD
DVDD
DVDD DVDD
ENABLE
FB
FB
FSEL
FSEL
GND_SNS
ISHA
ISHA
ISHB
ISHB
ISHC
ISHC
ISHCOM
ISHCOM
ISHEN
ISHEN
ISHREFA
ISHREFA
ISHREFB
ISHREFB
ISHREFC
ISHREFC
ISHREFC
ISHSL
ISHSL
LOAD_GND
LOAD_SIG
LOAD_VDD
LOAD_VOUT
LX
M/S
M/S
OCA OCB
OCSSA OCSSB
PGOOD
PGOOD
PGOOD
PGOOD
PGOOD
PORSEL
PORSEL
SC0
SC0
SC1
SC1
SS
SYNC
SYNC
UNNAMED_3_GT11MSCKE_I179_COM
UNNAMED_3_ISL70002SEH_I462_64
UNNAMED_3_ISL71040M_I 506_PIN6 UNNAMED_3_ISL71040M_I 506_PIN7 UNNAMED_3_ISL71040M_I 506_PIN8
UNNAMED_3_JUMPER2_I55_IN2
UNNAMED_3_JUMPER2_I59_IN1
UNNAMED_3_JUMPER2_I61_IN1
UNNAMED_3_NCHANNEL_ I480_D
UNNAMED_3_SINGLE_I433_P
UNNAMED_3_SMCAP_I248_B
UNNAMED_3_SMCAP_I355_A
UNNAMED_3_SMCAP_I569_A
UNNAMED_3_SMLED_I1 01_A
UNNAMED_3_SMRES_I507_A
UNNAMED_3_SMRES_I520_B
VIN
VIN
VIN
VOUT
VOUT
VOUT_SNS

R34UH0002EU0100 Rev.1.00 Page 8
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ISL70002SEHEVAL3Z Evaluation Board Manual
2.3 Bill of Materials
Qty Reference
Designator Description Manufacturer Manufacturer Part Number
1C20
CAP-AEC-Q200, SMD, 0805, 1000PF, 200V, 10%,
X7R, ROHS Kemet C0805C102K2RACAUTO
2 C12, C14 CAP-AEC-Q200, SMD, 0805, 0.01µF, 200V, 10%,
X7R, ROHS Kemet C0805C103K2RACAUTO
1C9
CAP-AEC-Q200, SMD, 0805, 6800pF, 200V, 10%,
X7R, ROHS Kemet C0805C682K2RACAUTO
1 C31 CAP, SMD, 1825, 0.22µF, 200V, 10%, X7R, ROHS Kemet C1825C224K2RAC7800
3 C1, C2, C3 CAP, SMD, 0603, 470pF, 25V, 10%, X7R, ROHS Venkel C0603X7R250-471KNE
1C17
CAP, SMD, 0603, 4700pF, 50V, 5%, C0G/NP0,
ROHS Kemet C0603C472J5GACTU
1 C8 CAP, SMD, 0603, 6800pf, 50V, 5%, X7R, ROHS AVX 06035C682JAT2A
15
C6, C7, C10,
C13, C18, C27,
C30, C34, C43,
C45, C47, C49,
C50, C36, C38
CAP, SMD, 0805, 1µF, 10V, 10%, X7R, ROHS Venkel C0805X7R100-105KNE
2 C37, C51 CAP, SMD, 1206, 10UF, 16V, 10%, X5R, ROHS Samsung CL31A106KOHNNNE
11
C4, C5, C11,
C15, C19, C21-
C26
CAP TANT, LOW ESR, SMD, D, 150µF, 10V, 20%,
6mΩ, ROHS Kemet T530D157M010ATE006
2 L1, L2 COIL-PWR INDUCTOR, SMD, 6.9×6.5, 1.0µH,
20%, 11A, ROHS Vishay IHLP2525CZER1R0M01
3 J33, J36, J41 CONN-SCOPE PROBE TEST PT, COMPACT,
PCB MNT, ROHS Tektronix 131-4353-00
7
TP1, TP2, TP6,
TP10, TP12,
TP14, TP15
CONN-TURRET, TERMINAL POST, TH, ROHS Keystone 1514-2
8
TP3, TP4, TP5,
TP7, TP8, TP9,
TP11, TP13
CONN-MINI TEST POINT, VERTICAL, WHITE,
ROHS Keystone 5002
2 TPB1, TPB2 CONN-COMPACT TEST POINT, SMD, ROHS Keystone 5016
6BA1, BA2, J1,
J2, J39, J40
CONN-JACK, MINI BANANA, SDRLESS,
NICKEL/BRASS, 0.175 PLUG, ROHS Keystone 575-6
7
J13, J18, J23,
J26, J27, J28,
J29
CONN-HEADER, 1×3, BREAKAWY 1×36,
2.54mm, ROHS BERG/FCI 68000-236HLF
7
J30, J31, J32,
JP3, JP4, JP5,
JP6
CONN-HEADER, 1×2, RETENTIVE, 2.54mm,
0.230×0.120, ROHS BERG/FCI 69190-202HLF

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ISL70002SEHEVAL3Z Evaluation Board Manual
9
Pins 1-2: J13,
J18, J23, J26,
J27,
Pins 2-3: J28,
J29, J30, J32
CONN-JUMPER, SHUNT, 2P, 2.54mmPITCH,
BLK, 6mm, OPEN, ROHS Sullins SPC02SYAN
1D2
DIODE-SCHOTTKY, LOW IR, SMD, 2P, 40V, 3A,
ROHS Microsemi 1N5822US
1D1
LED-GaAs RED, SMD, 2×1.25mm, 100mW,
40mA, 10mcd, ROHS Liteon/Vishay LTST-C170CKT
1U1
IC-12A SYNC BUCK REGULAT, 64P, CQFP,
W/HEATSINK, ROHS Renesas Electronics ISL70002SEHFE/PROTO
1Q2
IC-PROTO, RAD HARD, 40V GAN FET, 4P,
CLCC, ROHS Renesas Electronics
ISL70020SEHL/PROTO
ALT:
ISL73020SEHL/PROTO
1 U2 IC-GaN FET DRIVER, 8PTDFN, 4×4, ROHS Renesas Electronics ISL71040MRTZ
1Q1
TRANSISTOR, N-CHANNEL, 3LD, SOT-23, 60V,
115mA, ROHS Diodes, Inc. 2N7002-7-F
1 R23 POT-TRIM, TH, 5K, 0.5W, 10%, 3P, 3/8, ROHS Bourns 3299W-1-502LF
1R21
RES-AEC-Q200, SMD, 0603, 1k, 1/10W, 0.1%,
THINFILM, ROHS Panasonic ERA-3AEB102V
2 R15, R28 RES-AEC-Q200, SMD, 0603, 10k, 1/10W, 0.1%,
THINFILM, ROHS Panasonic ERA-3AEB103V
1R20
RES-AEC-Q200, SMD, 0603, 1.5k, 1/10W, 0.1%,
THINFILM, ROHS Panasonic ERA-3AEB152V
2R8,R10
RES-AEC-Q200, SMD, 0603, 19.6k, 1/10W, 0.1%,
THINFILM, ROHS Panasonic ERA-3AEB1962V
2R9,R11
RES-AEC-Q200, SMD, 0603, 4.02k, 1/10W, 0.1%,
THINFILM, ROHS Panasonic ERA-3AEB4021V
2 R13, R14 RES, SMD, 0603, 1Ω, 1/10W, 1%, TF, ROHS Panasonic ERJ-3RQF1R0V
3 R26, R32, R33 RES, SMD, 0603, 10Ω, 1/10W, 1%, TF, ROHS KOA RK73H1JT10R0F
12
R1, R2, R3,
R4, R5, R6,
R7, R12, R19,
R34, R37, R27
RES, SMD, 0603, 0Ω, 1/10W, TF, ROHS Venkel CR0603-10W-000T
1 R22 RES, SMD, 0603, 100Ω, 1/10W, 1%, TF, ROHS Venkel CR0603-10W-1000FT
3 R16, R17, R24 RES, SMD, 0603, 1K, 1/10W, 1%, TF, ROHS Panasonic ERJ-3EKF1001V
1 R25 RES, SMD, 1206, 10Ω, 1/4W, 1%, TF, ROHS Venkel CR1206-4W-10R0FT
8
R31, R35, R36,
R40, R41, R42,
R43, R44
RES, SMD, 2512, 0.82Ω, 1W, 5%, TF, ROHS Panasonic ERJ-1TRQJR82U
Qty Reference
Designator Description Manufacturer Manufacturer
Part Number

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ISL70002SEHEVAL3Z Evaluation Board Manual
2 R38, R39 RES-AEC-Q200, SMD, 2512W, 0.002Ω, 3W, 2%,
MF, ROHS Susumu CO., LTD KRL6432E-M-R002-G-T1
1S1
SWITCH-TOGGLE, SMD, 6PIN, SPDT, 2POS,
ON-NONE-ON, ROHS
ITT Industries/C&K
Division GT11MSCBE
4 Four corners SCREW, 4-40×1/4in, PHILLIPS, PANHEAD,
STAINLESS, ROHS Building Fasteners PMSSS 440 0025 PH
4 Four corners STANDOFF, 4-40×3/4in, F/F, HEX, ALUMINUM,
0.25 OD, ROHS Keystone 2204
0C16, C28, C29,
C32, C33, C35 CAP, SMD, 0603, DNP- Do not populate
0
C48, C52, C53,
C54, C55, C56,
C57, C58, C59,
C60
CAP, SMD, 1206, DNP- Do not populate
0 JP1, JP2 DO NOT POPULATE
0C39, C40, C41,
C42, C44, C46 DO NOT POPULATE T530D157M010ATE006
0
J3, J5, J7, J9,
J11, J14, J16,
J19, J21, J24,
DO NOT POPULATE
0P1, P2, J34,
J35, J37, J38 DO NOT POPULATE
0 R18 RESISTOR, SMD, 0603, DNP- Do not populate
0 R29, R30 RES, SMD, 2512, DNP- Do not populate
Qty Reference
Designator Description Manufacturer Manufacturer
Part Number

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ISL70002SEHEVAL3Z Evaluation Board Manual
2.4 Board Layout
Figure 7. Top Silkscreen
Figure 8. Top Layer Component Placement

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ISL70002SEHEVAL3Z Evaluation Board Manual
Figure 9. Layer 1 (Top Component Layer)
Figure 10. Layer 2

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Figure 11. Layer 3
Figure 12. Layer 4

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ISL70002SEHEVAL3Z Evaluation Board Manual
Figure 13. Layer 5
Figure 14. Layer 6

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ISL70002SEHEVAL3Z Evaluation Board Manual
Figure 15. Layer 7
Figure 16. Layer 8 (Bottom Component Layer)

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ISL70002SEHEVAL3Z Evaluation Board Manual
Figure 17. Bottom Layer Component Placement
Figure 18. Bottom Silkscreen

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ISL70002SEHEVAL3Z Evaluation Board Manual
3. Typical Performance Curves
Figure 19. VOUT Force and Sense using Integrated 2mΩ
Resistors
Figure 20. Efficiency vs Load vs Output Voltage
VIN = 3.3V, fSW = 500kHz, -55°C Case Temperature
Figure 21. Efficiency vs Load vs Output Voltage
VIN = 3.3V, fSW = 500kHz, +25°C Case Temperature
Figure 22. Efficiency vs Load vs Output Voltage
VIN = 5V, fSW = 1MHz, +25°C Case Temperature
Figure 23. Efficiency vs Load vs Output Voltage
VIN = 3.3V, fSW = 500kHz, +85°C Case Temperature
Figure 24. Efficiency vs Load vs Output Voltage,
VIN =3.3V,f
SW = 500kHz, +125°C Case Temperature
0.98
1.00
1.02
1.04
1.06
1.08
036912
15
VOUT (V)
Load Current (A)
VOUT FORCE
VOUT SENSE (4mΩ
round trip)
50
55
60
65
70
75
80
85
90
95
100
01234567891011
12
Efficiency (%)
Load Current (A)
1.0 Vout 1.2Vout
1.5Vout 1.8Vout
2.5Vout
50
55
60
65
70
75
80
85
90
95
100
01234567891011
12
Efficiency (%)
Load Current (A)
1.0Vout 1.2Vout
1.5Vout 1.8Vout
2.5Vout
60
65
70
75
80
85
90
95
100
01234567891011
12
Efficiency (%)
Load Current (A)
1.0Vout 1.2Vout
1.5Vout 1.8Vout
2.5Vout 3.3Vout
50
55
60
65
70
75
80
85
90
95
100
01234567891011
12
Efficiency (%)
Load Current (A)
1.0Vout 1.2Vout
1.5Vout 1.8Vout
2.5Vout
50
55
60
65
70
75
80
85
90
95
100
01234567891011
12
Efficiency (%)
Load Current (A)
1.0Vout 1.2Vout
1.5Vout 1.8Vout
2.5Vout

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ISL70002SEHEVAL3Z Evaluation Board Manual
4. Ordering Information
5. Revision History
Part Number Description
ISL70002SEHEVAL3Z ISL70002SEH remote sensing evaluation board
Revision Date Description
1.00 Aug 16, 2022 Initial release

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