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TPS65022 Datasheet(PDF) 33 Page - Texas Instruments |
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TPS65022 Datasheet(HTML) 33 Page - Texas Instruments |
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33 / 47 page  Vcc_CORE Vcc_Batt Vcc_IO Vcc_LCD Vcc_MEM Vcc_BB Vcc_USIM Vcc_SRAM Vcc_PLL SYS_EN PWR_EN 3V 3V;3.3V 1.8V;2.5V;3V;3.3V 1.8V;2.5V;3V;3.3V 1.8V;2.5V;3V;3.3V 1.8V;3V 1.3V 1.1V variable0.85Vto1.4V LDO1 L3 L1 VRTC DCDC2_EN LDO_EN LDO2 nBatt_Fault nRESET nVcc_Fault TPS65021 L2 INT RESPWRON DCDC3_EN PWRFAIL DCDC1_EN DEFDCDC3 DEFDCDC2 DEFDCDC1 Vcc SCLK SDAT Vcc_Batt 4.7 kW 4.7 kW LOWBAT_SNS PWRFAIL_SNS Vcc VBACKUP 3V backup battery Vcc VINDCDC1 VINDCDC2 VINDCDC3 Vcc 10R 1 F m 10 F m 10 F m 10 F m TRESPWRON HOT_RESET VSYSIN DEFLDO2 DEFLDO1 VDCDC1 GND GND SCLK SDAT VIN_LDO LOW_BATT VDCDC1 VDCDC2 VDCDC3 2.2 H m 2.2 H m 2.2 H m 22 F m 22 F m 22 F m 2.2 F m 2.2 F m 1nF 4.7 F m Vcc 1MR Vcc_Batt Vcc_IO GPIOx TPS65022 www.ti.com SLVS667B – JULY 2006 – REVISED JANUARY 2016 8.2 Typical Application Figure 35. Typical Configuration for the Intel® PXA270 Bulverde Processor 8.2.1 Design Requirements The TPS65022 device has only a few design requirements. Use the following parameters for the design example: • 1- μF bypass capacitor on VCC, located as close as possible to the VCC pin to ground • VCC, VINDCDC1, VINDCDC2, and VINDCDC3 must be connected to the same voltage supply with minimal voltage difference • Input capacitors must be present on the VINDCDC1, VINDCDC2, VINDCDC3, and VIN_LDO supplies if used • Output inductor and capacitors must be used on the outputs of the DCDC converters if used • Output capacitors must be used on the outputs of the LDOs if used 8.2.2 Detailed Design Procedure 8.2.2.1 Inductor Selection for the DC-DC Converters Each of the converters in the TPS65022 typically use a 3.3 μH output inductor. Larger or smaller inductor values are used to optimize the performance of the device for specific operation conditions. The selected inductor has to be rated for its DC resistance and saturation current. The DC resistance of the inductance influences directly the efficiency of the converter. Therefore, an inductor with lowest DC resistance should be selected for highest efficiency. Copyright © 2006–2016, Texas Instruments Incorporated Submit Documentation Feedback 33 Product Folder Links: TPS65022 |
Similar Part No. - TPS65022_16 |
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Similar Description - TPS65022_16 |
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