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TLE5012B
Application Circuits
User’s Manual
19
Rev. 1.2, 2018-02
3.5
PWM interface (open-drain configuration)
The TLE5012B - E5020 is also a PWM derivate but with open drain for IFA (PWM) pin. A pull-up resistor (e.g.
2.2k
Ω
) should be added between the IFA line and VDD, as shown in
.
Internal pull-up resistors are always available for DATA and CSQ pins (see Datasheet). It is recommended to
connect CSQ pin to V
DD
to provide a strong level and avoid unintentional activation of the SSC interface. DATA
pin should be left open. The figure below shows a typical implementation of the TLE5012B - E5020.
Figure 3-5 Application circuit for TLE5012B with PWM (open-drain configuration) interface
3.6
SPC interface
The TLE5012B can be configured with SPC only (
). This is only possible with the TLE5012B - E9000
derivate, which is by default configurated with an open-drain IFA (SPC) pin.
In
the IFC (S_NR[1]) and SCK (S_NR[0]) pins are set to ground to generate the slave number (S_NR)
0
D
(or 00
B
). In case of SCK (S_NR[0]) needs to be set to VDD to generate another slave address, CSQ pin should
be set to ground instead. Internal pull-up resistors are always available for DATA and CSQ pins (see Datasheet).
DATA pin should be left open. Since SCK and CSQ pins should have opposite level, it is not recommended to use
the SSC interface in parallel.
Figure 3-6 Application circuit for TLE5012B with SPC interface
TLE5012B
CSQ
SCK
DATA
IFA
IFB
IFC
GND
VDD
3.0 – 5.5V
100nF
(PWM)
Rpd recommended, e.g. 10k
Ω
Rpu required, e.g. 2K2
Ω
PWM
Rp
u
TLE5012B
CSQ
SCK
DATA
IFA
IFB
IFC
GND
VDD
3.0 – 5.5V
100nF
(SPC)
Rpd recommended, e.g. 10k
Ω
Rpu required, e.g. 2K2
Ω
SPC
Rp
u