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 20 of 23
NXP Semiconductors
UM10533
TEA1723BT GreenChip SP SMPS demo board
10. Attention points
When testing the CC mode of the TEA1723BT, use an electronic DC-load in resistive
mode, not in current mode.
The current in CC mode has a small fold back characteristic (see Figure 4
). When current
mode of an electronic DC-load is used, the output voltage drops immediately to zero when
the maximum current is exceeded. Once the output voltage and the input voltage of the
DC-load is zero, many DC-loads cannot adjust the current. Using the resistive mode of the
electronic DC-load avoids this problem.
Remark: This TEA1723BT controller behavior is not incorrect. Only test it in the correct
way.