поискавой системы для электроныых деталей |
|
SM72441 датащи(PDF) 6 Page - Texas Instruments |
|
SM72441 датащи(HTML) 6 Page - Texas Instruments |
6 / 15 page RESET SOFT-START MPPT Buck Boost Iout >= Iout_th Iout < Iout_th Iout >= Iout_th RST Pin is low or OVP Pin is low Iout < Iout_th SM72441 SNOSB64G – OCTOBER 2010 – REVISED APRIL 2013 www.ti.com OPERATION DESCRIPTION OVERVIEW The SM72441 is a programmable MPPT controller capable of outputting four PWM gate drive signals for a 4- switch buck-boost converter. Refer to the Typical Application Circuit diagram (Figure 2). The SM72441 uses an advanced digital controller to generate its PWM signals. A maximum power point tracking (MPPT) algorithm monitors the input current and voltage and controls the PWM duty cycle to maximize energy harvested from the photovoltaic module. MPPT performance is very fast. Convergence to the maximum power point of the module typically occurs within 0.01s. This enables the controller to maintain optimum performance under fast-changing irradiance conditions. Transitions between buck, boost, and buck-boost modes are smoothed, and advanced digital PWM dithering techniques are employed to increase effective PWM resolution. Output voltage and current limiting functionality are integrated into the digital control logic. The controller is capable of handling both shorted and no-load conditions and will recover smoothly from both. Figure 4. High Level State Diagram for Startup STARTUP SM72441 has a soft start feature that will ramp its output voltage for a fixed time of 250ms. MPPT mode will be entered during soft start if the load current exceeded the minimum current threshold. Otherwise, buck-boost operation is entered after soft-start is finished where the ratio between input and output voltage is 1:1. Refer to Figure 4 for a high level state diagram of startup. The current threshold to transition between MPPT to standby (buck-boost) mode and vice versa can be set by feeding the output of current sensing amplifier (Figure 2) to the AIIN and AIOUT pin. For an appropriate voltage level, refer to the AIIN AND AIOUT PIN section of this datasheet. 6 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: SM72441 |
Аналогичный номер детали - SM72441_15 |
|
Аналогичное описание - SM72441_15 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю 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 |