ISL9241EVAL1Z
4. PCB Layout Guidelines
UG184 Rev.3.00
Page 18 of 28
Aug.26.19
1
RS2
RES-CURR.SENSE, SMD, 1206,
0.01Ω, 1W, 1%, 75ppm, ROHS
Vishay/Dale
WSLP1206R0100FEA
1
RS1
RES-CURR.SENSE, SMD, 1206,
0.02Ω, 1W, 1%, 75ppm, ROHS
Vishay/Dale
WSLP1206R0200FEA
2
SW1,SW2
SWITCH-TOGGLE, SMD, 6PIN,
SPDT, 2POS, ON-NONE-ON,
ROHS
ITT Industries/C&K Division
GT11MSCBE
4
Four corners
SCREW,4-40X1/4in, PHILLIPS,
PANHEAD, STAINLESS, ROHS
Building Fasteners
PMSSS 440 0025 PH
4
Four corners
STANDOFF,4-40X3/4in, F/F, HEX,
ALUMINUM, 0.25 OD, ROHS
Keystone
2204
1
Place assy in bag
BAG, STATIC, 5x8, ZIPLOC,
ROHS
Renesas
212403-013
0
L2
Do Not Populate or Purchase
0
R3, R35, R37, R4_38, R5_38,
R12_38, R23_38, R9_38, R93,
R98_41, R94_38, R99_42, R94,
R95
Do Not Populate or Purchase
0
TP38-TP42
Do Not Populate or Purchase
0
C18, C19, C25, C27, C28, C29,
C34, C35, C42, C87, C98,
C98_41, C38_38, C44, C88-
C97, C100, C101, C102
Do Not Populate or Purchase
0
Q6_38, Q7_38, Q11_38
Do Not Populate or Purchase
0
D4
Do Not Populate or Purchase
1
Affix to Back of PCB
LABEL-DATE CODE_LINE 1:
YRWK/REV#, LINE 2: BOM
NAME
Renesas
LABEL-DATE CODE
1
Rename PCB to:
ISL9241EVAL1Z REV E
LABEL, TO RENAME BOARD
Renesas
LABEL-RENAME BOARD
Table 1.
Guidelines for PCB Layout
Pin #
Pin Name
Layout Guidelines
Bottom
Pad
GND
Connect this ground pad to the ground plane through a low impedance path. Renesas recommends using at
least five vias to connect to ground planes in the PCB to ensure sufficient thermal dissipation directly under the
IC.
1
CSON
Run two dedicated traces with sufficient width in parallel (close to each other to minimize the loop area) from the
two terminals of the battery current-sensing resistor to the IC. Place the differential mode and common-mode RC
filter components in the general proximity of the controller.
Route the current-sensing traces through vias to connect the center of the pads or route the traces into the pads
from the inside of the current-sensing resistor. The following drawings show the two preferred ways of routing
current-sensing traces.
2
CSOP
3
NGATE
Switching pin. Run the NGATE trace to the NGATE N-type MOSFET Gate node. Use sufficient width. Do not
allow any sensitive analog signal traces to cross over or get close.
Qty
Reference Designator
Description
Manufacturer
Manufacturer Part Number
Current-Sensing Traces
Vias
Current-Sensing Traces