RTL8211C & RTL8211CL
Datasheet
8.3. Measurement Criteria
In order for the switching regulator to operate properly, the input and output voltage measurement criteria
must be met. From the input side, the voltage overshoot cannot exceed 4V; otherwise the chip may be
damaged. Note that the voltage signal must be measured directly at VDDREG, not at the capacitor. In order
to reduce the input voltage overshoot, the C82 and C83 must be placed close to VDDREG. The following
figures show what a good input voltage and a bad one look like.
Figure 7. Input Voltage Overshoot <4V (Good)
Figure 8. Input Voltage Overshoot >4V (Bad)
Integrated 10/100/1000 Gigabit Ethernet Transceiver 36 Track ID: JATR-1076-21 Rev. 1.3
ETC [ ETC ]
