1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Sheet title
Project name
Size A3
Sheet 1 of 1
Version 1.0
Date 23.02.2022
File name R_160_V10_IPS2550_12x30_OD62_ID38.SchDoc
R_160_V10_IPS2550_12x30_OD62_ID38
R_160_V10_IPS2550_12x30_OD62_ID38.PrjPcb
B.GOMBORDrawn bySYS.APP.ENG.TEAM
DGND
220pF
C5
220pF
C6
220pF
C3
220pF
C4
DGNDDGNDDGNDD GND
4K7
R1
VDD_U1
2.2nF
C1
DGND
47nF
C12
47nF
C13
47nF
C14
47nF
C15
VDD_U1
4K7
R2
VDD_U1
4K7
R3
VDD_U1
DGND DGND DGND DGND
470nF
C8
470pF
C7
DGND
470pF
C16
DGND
470pF
C17
DGND
470nF
C11
DGNDD GND
2.2nF
C2
DGND
3
12
D1
ESDCAN0X
100pF
C19
100pF
C18
100pF
C21
100pF
C20
DGND DGND DGND DGND
Place close to IPS pins Place close to IPS pins
DGND
3
12
D2
ESDCAN0X
DGND
3
12
D3
ESDCAN0X
DGND
Place close to Header pins
1uF
C22
DGND
Place next to Heade r pins
100pF
C9
100pF
C10
TX1
6
RX1
2
ADDR_IRQN
1
RX3
4
TX2
7
RX2
3
RX4
5
VDDA
8
VSS
9
VDD
10
COSN
11
COS_SDA
12
SINN
13
SIN_SCL
14
SCL
15
SDA
16
EP
17
U1
IPS2550
ADDR_IRQN_U1
5R6
R14
VDD_IN1
SDA_U1
SCL_U1
SIN_SCL_U1
SINN_U1
COS_SDA_U1
COSN_U1
VDD_U1
SIN_SCL_U1 COS_SDA_U1
DGND
SINN_U1 COSN_U1 VDD_IN1 VDD_IN1
When programming over Output Pins,
don ´t connect ADDR_IRQN(1), SCL(15) and SDA(16)
to the module connector. (ESD recommendation)
ESD protection diodes are recommend ed for
voltage levels over 20kV.
E.g. using 150pF / 3 30Ohm ESD gun for te st
LEGEND
Component Size 0603
Component Size 0402
Net Name
Component Placement Sugges tion
Optional Component
C_ADJ = To be adjusted according to coil incductivity. Calculate C_TX with the given formula.
Use dielectric strength Vr >= 50V X7R capacitors for C7 + (C10 .. C22)
C_ADJ = 2 x C_TX
It´s recommended to use C0G or NP0 ceramic capacitors
TX_U1
TX1_U1
TX2_U1
22R
R12
22R
R13
TP1
TP2
TP3
TP4
100R
R5
100R
R7
100R
R9
RX1_U1
RX2_U1
RX3_U1
RX4_U1
100R
R11
RX13_U1
RX24_U1
Optional test points
Not included in the design
C_ADJ C_ADJ
1. Measure TX inductance on the PCB
with a simple LCR meter
2. Re-adjust C_ADJ to match ~3.5MHz
TX oscillation frequency if needed
Recommended C_ADJ values
based on coil simulations
Next steps when PCB ha s been produced:
3
1
4
2
56
78
910
P1
62101021021
DGND