Os motores de busca de Datasheet de Componentes eletrônicos |
|
ACT4911QW Folha de dados(PDF) 19 Page - Active-Semi, Inc |
|
ACT4911QW Folha de dados(HTML) 19 Page - Active-Semi, Inc |
19 / 33 page ACT4911QW Rev 1.0, 15-Sept-2017 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi Copyright © 2017 Active-Semi, Inc. 19 settings. See the Storage Boost Converter section for more information. ISET ISET sets the eFuse current limit with a resistor connected to VSS. See the eFuse section for more information. SS The SS pin uses a capacitor to VSS to control the eFuse softstart timing. See the eFuse section for more information. PGND The PGND pin is the buck and boost converters’ power ground. The internal FETs connect directly to the PGND pins. The power supply input and output capacitors should connect to the PGND pins. COMP COMP is the output of a transconductance amplifier that is used to compensate the internal buck converter. The compensation components, which are typically a standard type-2 compensation should be grounded to the VSS pin. See the Application section for more information on compensating the internal buck converter. PLI The PLI pin has four possible functions which are set by the internal I2C registers. Power Loss Indicator function. Set register bits PLI_FUNC_SEL[1:0] in 0x19h to 00 to configure PLI for this function. With this setting, PLI goes high after softstart and stays high in normal operation. PLI immediately goes low when the IC enters supplement mode. This setting is used to let the system uP know that power loss is imminent. PG_STR function. Set PLI_FUNC_SEL = 01 to configure PLI for this function. With this setting, PLI starts low during softstart and then goes high when the storage capacitor voltage is in regulation. It goes low if the storage voltage drops below 95% of its programmed output voltage. VOUT_READY function. Set PLI_FUNC_SEL = 10 to configure PLI for this function. With this setting, PLI starts low during softstart and then goes high when the IC exits the softstart mode and goes into normal operation. The IC exits softstart ~10ms after the programmed softstart time ends. PLI_VOUT_READY function. Set PLI_FUNC_SEL = 11 to configure PLI for this function. With this setting, PLI performs a dual function. It starts out as the VOUT_READY function at turn-on. After PLI goes from low to high after softstart, it then acts as the Power Loss Indicator function. The PLI pin is an open-drain output and is 24V compliant. FB The FB pin is used to regulate the buck converter output voltage when the IC is in supplement mode. HSB HSB provides power to the internal high-side MOSFET gate driver circuitry. Connect a 47nF capacitor from HSB pin to SW pin. SW SW is the switch node for the internal buck and boost converters. VOUT VOUT is the output of the eFuse and connects to the system load. VOUT powers the boost converter when it charges up the storage capacitors. It is the output of the buck converter when the IC is in supplement mode. The eFuse connects VOUT to VIN in normal operation, and it disconnects it in supplement mode. |
Nº de peça semelhante - ACT4911QW |
|
Descrição semelhante - ACT4911QW |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |