Electronic Components Datasheet Search |
|
ADP2441-EVALZ Datasheet(PDF) 4 Page - Analog Devices |
|
ADP2441-EVALZ Datasheet(HTML) 4 Page - Analog Devices |
4 / 12 page UG-407 ADP2441-EVALZ User Guide Rev. 0 | Page 4 of 12 MEASURING EVALUATION BOARD PERFORMANCE Output Voltage Ripple To observe the output voltage ripple, place an oscilloscope probe tip at Terminal T3 and connect the probe ground lead at the negative (−) Terminal T4. Set the oscilloscope to an ac- coupled, 100 mV/division and 2 μs/division time base. Switching Waveform To observe the switching waveform with an oscilloscope, place the oscilloscope probe tip at the end of the inductor that is connected to the SW pin with the probe ground at Terminal T4, GND. Set the scope to dc, 5 V/division, and 2 µs/division time base. The switching waveform should alternate between 0 V and approximately the input voltage. Figure 4. Switch Node Measurement Measuring Load Regulation The load regulation should be measured by increasing the load at the output and looking at the change in output voltage. To minimize voltage drop, use short low-resistance wires, especially for heavy loads. Measuring Line Regulation Vary the input voltage and examine the change in the output voltage. In PWM mode, the output voltage ripple should be small (<50 mV) but in pulse skip mode, the output voltage ripple can be as large as 100 mV. Measuring Efficiency The efficiency, η, is measured by comparing the input power with the output power. IN IN OUT OUT I V I V × × = η Measure the input and output voltages as close as possible to the input and output capacitors to reduce the effect of IR drops. Inductor Current The inductor current can be measured by removing one end of the inductor from its pad and connecting a current loop in series with it. Then a current probe can be used to measure the current flowing through the current loop. Line Transient Response Generate a step input voltage (VIN) and observe the behavior of the output voltage, with an oscilloscope. Load Transient Response Generate a load current transient at the output, VOUT, and observe the output voltage response with an oscilloscope. Use a current probe attached to the wire between the output and the load to visualize the current transient. Loop Stability Measurement Closed-loop response can be measured using a network analyzer. To measure the loop response, Header IN and Header OUT are available. |
Similar Part No. - ADP2441-EVALZ |
|
Similar Description - ADP2441-EVALZ |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |