TLD5190QV Datasheet, PDF (45/58 Pages) Infineon Technologies AG – H-Bridge DC/DC Controller for High Power LED Lighting

H-Bridge DC/DC Controller
TLD5190QV
Infineon FLAT SPECTRUM Featureset
11
Infineon FLAT SPECTRUM Featureset
11.1
Description
The Infineon FLAT SPECTRUM feature set has the target to minimize external additional filter circuits. The goal
is to provide several beneficial concepts to provide easy adjustments for EMC improvements after the layout is
already done and the HW designed.
11.2
Synchronization Function
The TLD5190QV features a SYNC input pin which can be used by a µC pin to define an oscillator switching
frequency. The µC is responsible to synchronize with various devices by applying appropriate SYNC signals to
the dedicated DC/DC devices in the system. Refer to Figure 27
Note: The Synchronization function can not be used when the Spread Spectrum is active.
H-Bridge DCDC
MASTER
SYNC
LOGIC
BUCK-
BOOST
GATE
CONTROL
e.g. 400kHz
Phaseshift A
SYNC1
µC
SYNC2
e.g. 400kHz
Phaseshift B
H-Bridge DCDC
Slave
SYNC
LOGIC
INPUT
BUCK-
BOOST
GATE
CONTROL
defined phase shift between
Outputs of different devices
Figure 27 Synchronization Overview
11.3
CLKOUT Function
The CLKOUT pin provides an in-phase clock signal provided by the internal oscillator. This signal can be used to
synchronize two devices for extending output power capability.
Data Sheet
45
Rev. 1.0, 2016-05-20