AN10907
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Application note
Rev. 1 — 28 December 2010
68 of 82
NXP Semiconductors
AN10907
TEA1613T resonant power supply control IC
11.1.3 Ground layout example
11.1.4 Miscellaneous
Connecting SNSCURHBC pin 15
Place a series resistor in the SNSCURHBC connection as close as possible to pin 15.
This is important for avoiding disturbance pickup. Also avoid capacitive coupling between
the connection to pin 15 and the HB track (to pin 13) that contains high dV/dt signals.
CFMIN pin 17 (and RFMAX pin 18)
Connect the oscillator capacitor on CFMIN from pin 17 to SGND pin 16 with short tracks to
prevent pickup of disturbances by an external field. Although less critical, a similar
construction can be used for RFMAX.
Fig 53. Ground layout example with star point at the boost capacitor
001aal475
