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TPS40140RHHR Datasheet(PDF) 22 Page - Texas Instruments |
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TPS40140RHHR Datasheet(HTML) 22 Page - Texas Instruments |
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22 / 68 page  CLKIO PHSEL TPS40140 MASTER 20 µA TPS40140 SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015 www.ti.com Two ICs could also be configured as a 2-phase, single output master and a slave which has two independent outputs, but is synchronized with the master controller clock. Table 5 shows the configuration. Table 5. TPS40140 Two-Device, 2-Phase Master and a Dual-Output Slave Configuration DEVICE PIN, MASTER MASTER, 2 PHASE DEVICE PIN, SLAVE SLAVE, DUAL OUTPUT COMP1 To network COMP1 To network COMP2 COMP1 COMP2 To network TRK1 To SS capacitor TRK1 To SS capacitor TRK2 To BP5 TRK2 To SS capacitor ILIM1 To set resistors ILIM1 To set resistors ILIM2 GND ILIM2 To set resistors FB1 To network FB1 To network FB2 GND FB2 To network PHSEL 39-k Ω to GND PHSEL GND PGOOD1 To pullup resistor PGOOD1 To pullup resistor PGOOD1 To pullup resistor PGOOD1 To pullup resistor CLKIO To slave, CLKIO CLKIO To master, CLKIO 9.1.3.3 Clock Master, PHSEL, and CLKIO Configurations The clock synchronization between the master and the slave controller(s) is implemented in a simple configuration of series 39-k Ω resistors. There is a 20-μA current source from the PHSEL pin of the master controller. Depending on the number of slave controllers connected, the slave controllers selects the proper delay from the master CLKIO signal to accomplish phase interleaving. On a given master or slave controller, the two phases are always 180° out-of-phase. The CLKIO signal has either six or eight clocks for each cycle of the switching period. For maximum flexibility the master and slave controllers can be either in a 2-phase configuration or a Dual output configuration 9.1.3.3.1 One Device Operation The basic configuration of a single device is shown in Figure 20. Figure 20. Single Controller Only, Two Phases 22 Submit Documentation Feedback Copyright © 2005–2015, Texas Instruments Incorporated Product Folder Links: TPS40140 |
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