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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP8733 датащи(PDF) 20 Page - Texas Instruments |
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LP8733 датащи(HTML) 20 Page - Texas Instruments |
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20 / 86 page  IL_TOT_2PH IL0 IL1 0 90 180 270 360 450 540 630 720 PWM0 0 90 180 270 360 450 540 630 720 PWM1 SWITCHING CYCLE 360º PHASE, DEGREES 20 LP8733 SNVSBK2 – SEPTEMBER 2019 www.ti.com Product Folder Links: LP8733 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated Feature Description (continued) (2) Graph is not in scale and is for illustrative purposes only. Figure 10. PWM Timings and Inductor Current Waveforms in 2-phase Configuration. (UPDATE) (2) 7.3.1.3 Transition Between PWM and PFM Modes The PWM mode operation with phase-adding and shedding optimizes efficiency at mid to full load at the expense of light-load efficiency. The LP8733xx converter operates in the PWM mode at load current of about 600 mA or higher. At lighter load current levels the device automatically switches into the PFM mode for reduced current consumption when forced PWM mode is disabled (AUTO mode operation). By combining the PFM and the PWM modes, a high efficiency is achieved over a wide output-load current range. 7.3.1.4 Dual-Phase Switcher Configurations The LP8733xx device supports the following regulator configurations: • Single dual-phase configuration, Buck0 is master (Buck0 and Buck1) • Two single-phase configuration (Buck0 and Buck1) In the dual-phase configuration the control of the dual-phase regulator settings is done using the control registers of the master buck. The following slave registers are ignored: • The BUCK1_CTRL_1 (except the EN_RDIS1 bit) • The BUCK1_CTRL_2 (except the ILIM1[2:0] bits) • The BUCK1_VOUT • The BUCK1_DELAY • The Interrupt bits related to the slave buck (except the BUCK1_ILIM_INT) |
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