AN10881
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© NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 26 September 2011
81 of 102
NXP Semiconductors
AN10881
TEA1713 resonant power supply control IC with PFC
11. Miscellaneous advice and tips
11.1 PCB layout
11.1.1 General setup
The TEA1713 contains two largely independent converter controllers in one package.
General advice is to physically separate the PFC and HBC circuits on the PCB to avoid
mutual interference.
11.1.2 Grounding
Connect SGND + PGND directly under the IC (on the ground plane if possible) to avoid
false signal detection by driver current disturbance (
).
A star grounding construction provides the lowest risk of mutual converter disturbance or
signal detection disturbance. In this system, the central star point can be chosen at the
V
boost
capacitor ground.
Avoid High currents on grounding tracks that are meant for signal measurement.
11.1.3 Current loops
Fig 56. Grounding structure and current loops GATEPFC and GATELS
001aal065
TEA1713
MAINS
VOLTAGE
PFC
HBC
8
PGND
GATEPFC
GATELS
