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F-710-017, V1.2 TCM 330 / TCM 330U User Manual | v1.1 | August 2016 | Page 12/62
USER MANUAL V1.1
TCM 330 / TCM 330U
Wireless LED Controller Module
3.5
System design
In order to ensure reliable operation it is recommended to follow the external circuitry rec-
ommendations given in this chapter.
The high level system design is shown below.
3.5.1
Power supply
TCM 330 can be used in two system configurations:
n
DC (typically 12V) supplied system
The supply voltage is typically provided by an auxiliary power output of the LED driver.
Internal regulation for TCM 330 supply voltage (3.0V … 3.3V) and potentially the 0-10V
driver (typically 12V, depending on input voltage and output driver design) is required.
n
AC (line power) supplied system
Line power is used as supply voltage.
Use of transformer, rectifier, Driver regulator and TCM 330 regulator is required.
Line power supply to the LED driver can be controlled by a relay in order to save power
when the LED driver is in OFF state.
TCM330 requires a single supply voltage between 3.0V and 3.3V. This supply voltage is
used both to supply the internal core functions and the IO cells. The ripple should be under
10mVpp for optimal RF performance.
Care should be taken to avoid emitted and conducted emissions and attention must be paid
to the power supply and a correct layout and shielding to achieve best RF performance.
Refer to app note
Power Supply Layout [AN101]
for recommendations.
In noisy environments it is recommended to place a 22 µF ceramic capacitor between VDD
and GND close to the module (material: X5R, X7R, min 6.3 V to avoid derating effects).
In addition, an HF SMD EMI Suppression Ferrite Bead such as the Würth WE-CBF HF SMD
EMI Suppression Ferrite Bead (Würth order number 742863160) can be inserted into the
power supply line.
