 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MIC21LV32 Datasheet(PDF) 27 Page - Microchip Technology |
|
||||||||||||||||||||||||||||||
MIC21LV32 Datasheet(HTML) 27 Page - Microchip Technology |
|
|
27 / 50 page  2021 Microchip Technology Inc. DS20006513A-page 27 MIC21LV32 FIGURE 4-12: EN Pin Sequencing. When the EN pin voltage is below the lower EN thresh- old, the MIC21LV32 goes into Shutdown mode. When in Shutdown mode, the MIC21LV32 stops switching and all internal control circuitry switches off to reduce the quiescent current. The EN pin, along with the PGOOD pin, can be used for sequencing multiple MIC21LV32 devices. It is recommended to power up VIN before the EN signal. 4.5.9 ADAPTIVE VOLTAGE POSITIONING (AVP), ALSO KNOWN AS DROOP FUNCTION (RECOMMENDED FOR CCM ONLY) In some high-current applications, a requirement on a precisely controlled output impedance is imposed. This dependence of output voltage on load current is often termed, “droop”, “load line” regulation, or Adaptive Voltage Positioning (AVP). The basic functionality of the AVP function is to achieve a controlled output resistance for the buck regulator, so that at 0A load, the output is +Ɛ% higher than the nom- inal voltage and at maximum load, the output is -Ɛ% related to nominal output value, as shown in Figure 4-13. FIGURE 4-13: AVP Ideal Output Resistive Characteristic. It is necessary to achieve the resistive characteristic above over the full frequency range of output loads. FIGURE 4-14: VOUT Load Transient Error without AVP/DROOP. FIGURE 4-15: VOUT Load Transient Error with AVP/DROOP. Figure 4-14 and Figure 4-15 explain how the AVP design window of ±Ɛ can be used to reduce the amount of the output capacitor necessary to sustain the load transient. Alternatively, the AVP can be used to improve the error of the load transient if it is decided to keep the same output capacitor. The DROOP pin is an analog output, which provides a voltage proportional to the output current in CCM according to the formula in Equation 4-20. EQUATION 4-20: EN PVDD/VDD UVLO Bias ready Vout 5V Bypass VI N VOUT VOUT(DC) VOUT(DC) Where: VCSH = Voltage at CSH Pin in CCM RSENSE = Current Sensing Resistance IL = Inductor Current per Phase VDROOP = VCSH – 1.2V = 8 × RSENSE × IL |
Similar Part No. - MIC21LV32 |
|
Similar Description - MIC21LV32 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
