Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
TEA1610T Datasheet(PDF) 7 Page - NXP Semiconductors |
|
TEA1610T Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 21 page TEA1610T_P_3 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 03 — 26 March 2007 7 of 21 NXP Semiconductors TEA1610P; TEA1610T Zero-voltage-switching resonant converter controller 8.4 Minimum frequency resistor The Rf(min) resistor is connected between the VREF pin (3 V reference voltage) and the IRS current input (held at a temperature independent voltage level of 0.6 V). The charge current of the capacitor Cf is twice the current flowing into the IRS pin. The Rf(min) resistor has a voltage drop of 2.4 V and its resistance defines the minimum charge current (rising slope) of the Cf capacitor if the control current is zero. The minimum frequency is defined by this minimum charge current (IIRS1) and the discharge current: 8.5 Maximum frequency resistor The output voltage is regulated by changing the frequency of the half-bridge converter. The maximum frequency is determined by the R∆f resistor which is connected between the error amplifier output VCO and the oscillator current input pin IRS. The current that flows through the R∆f resistor (IIRS2) is added to the current flowing through the Rf(min) resistor. As a result, the charge current ICF increases and the oscillation frequency increases. As the falling slope of the oscillator is constant, the relationship between the output frequency and the charge current is not a linear function (see Figure 7 and Figure 9): The maximum output voltage of the error amplifier and the value of R∆f determine the maximum frequency: I IRS1 2.4V R f min () ----------------- = t IRS1 C f ∆V Cf × 2I IRS1 × -------------------------- = f osc min () 1 t dt t IRS1 + ------------------------ = f bridge min () f osc min ( ) 2 --------------------- = I IRS2 V VCO 0.6 – R∆f --------------------------- = t IRS2 C f ∆V Cf × 2I IRS1 I IRS2 + () × --------------------------------------------- = I IRS2 max () V VCO max () 0.6 – R∆f --------------------------------------- = t IRS min () C f ∆V Cf × 2I IRS2 I IRS2 max () + () × --------------------------------------------------------- = f osc max () 1 T OSC ------------- = |
Número de pieza similar - TEA1610T |
|
Descripción similar - TEA1610T |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | 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 |