User's Manual l TQMa6x & TQMa6xP UM 0403 l © 2019, TQ-Systems GmbH
Page 32
3.2.7
Power supply
3.2.7.1
Overview TQMa6x power supply
The input voltage for the TQMa6x is 5 V ±5 % (4.75 V to 5.25 V).
In addition to the required PMIC, another voltage converter is assembled on the TQMa6x to provide the 4.2 V for the PMIC.
Connector
X1
PMIC
PF0100A
DC/DC 4V2
TPS62090
5 V
4.2 V
CPU
VCC2
VCC1
VCCn
Module
components
Illustration 14: Block diagram power supply
The characteristics and functions of the single pins and signals are to be taken from the PMIC data sheet (10) or the i.MX6
Reference Manuals (4), (5), and (6). The following block diagram shows the circuitry between PMIC and i.MX6.
Connector
X2
PMIC
CPU
PMIC_PWRON
STANDBY (I)
PMIC_STBY_REQ (O)
PWRON (I)
PMIC_ON_REQ (OD, PU 100 k
Ω
)
INTB (OD)
GPIO6_IO11
ONOFF (I
PU
100 k
Ω
)
SDWNB (OD)
GPIO6_IO08
SCL (I)
SDA (I/O)
I2C[1/3]_SCL (O)
I2C[1/3]_SDA (I/O)
MX6_ONOFF
VSNVS3V0
n.
a.
VCC3V3
VCC3V3
Illustration 15: Block diagram PMIC signals
Attention: Malfunction or destruction
Improper PMIC programming may cause the i.MX6 or other components on the TQMa6x
to operate outside their specification.
This can lead to malfunction, deterioration or destruction of the TQMa6x.
