User guide

UM10533 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
User manual Rev. 1 — 21 May 2012 8 of 23
NXP Semiconductors
UM10533
TEA1723BT GreenChip SP SMPS demo board
The load step is measured at V
mains
= 230 V and the output capacitors C5/C6 are
2  470 F. The burst frequency is 885 Hz.
5.4 Dynamic loading from 0.5 A to 0 A
Test condition: The dynamic loading is tested at a load step of 0 A to 0.5 A. The
TEA1723BT detects the load step only after the next switching cycle because of the
primary sensing feature.
The load step is measured at V
mains
= 230 V and the output capacitors C5/C6 are
2  470 F.
(1) CH1 = V
DRAIN
.
(2) CH2 = I
O
.
(3) CH3 = V
O
.
Fig 6. Load step from 0 A to 0.5 A