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ASL2500SHN Datasheet(PDF) 39 Page - NXP Semiconductors |
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ASL2500SHN Datasheet(HTML) 39 Page - NXP Semiconductors |
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39 / 39 page ![]() NXP Semiconductors ASL2500SHN Two phase boost converter © NXP Semiconductors N.V. 2017. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 26 October 2017 Document identifier: ASL2500SHN Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. 21. Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 General description . . . . . . . . . . . . . . . . . . . . . . 1 3 Features and benefits . . . . . . . . . . . . . . . . . . . . 2 4 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 8 Functional description . . . . . . . . . . . . . . . . . . . 6 8.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . 6 8.1.1 Off mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.1.2 Configuration mode . . . . . . . . . . . . . . . . . . . . . 6 8.1.3 Operation mode . . . . . . . . . . . . . . . . . . . . . . . . 7 8.1.4 Fail silent mode . . . . . . . . . . . . . . . . . . . . . . . . 7 8.2 Boost converter configuration . . . . . . . . . . . . . . 7 8.2.1 Configuration of the virtual phases . . . . . . . . . . 8 8.2.2 Association of physical phases to the output voltages . . . . . . . . . . . . . . . . . . . . . . . . . 9 8.2.3 Association of connected phases to the internal phase generation . . . . . . . . . . . . . . . . . 9 8.2.4 Enabling of connected phases . . . . . . . . . . . . 10 8.2.5 Configuration of the boost converter frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8.2.6 Control loop parameter setting . . . . . . . . . . . . 12 8.3 Output voltage programmability . . . . . . . . . . . 13 8.3.1 Output voltage target programming . . . . . . . . 13 8.3.2 Output overvoltage protection programming . 14 8.4 Coil peak current limitation . . . . . . . . . . . . . . . 14 8.5 Enabling the output voltage . . . . . . . . . . . . . . 15 8.6 Frequency trimming . . . . . . . . . . . . . . . . . . . . 16 8.7 Gate voltage supply . . . . . . . . . . . . . . . . . . . . 18 8.7.1 Gate voltage supply diagnostics . . . . . . . . . . . 18 8.8 Supply voltage monitoring . . . . . . . . . . . . . . . 18 8.8.1 Battery voltage measurement. . . . . . . . . . . . . 18 8.8.2 Undervoltage detection. . . . . . . . . . . . . . . . . . 19 8.8.3 Overvoltage detection. . . . . . . . . . . . . . . . . . . 19 8.9 Junction temperature information . . . . . . . . . . 19 8.10 Diagnostic information . . . . . . . . . . . . . . . . . . 20 8.10.1 Bit VIN_OV . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8.10.2 Bit VIN_UV . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8.10.3 Bit SPI_err . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8.10.4 Bit Tj_err . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.10.5 Bit VGG_err . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.10.6 Bit VGG_ok. . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.10.7 Bit Vout1_ok and Vout2_ok . . . . . . . . . . . . . . 21 8.11 SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.11.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.11.2 Typical use case illustration (Write/Read) . . . 24 8.11.3 Diagnostics for the SPI interface . . . . . . . . . . 25 8.11.4 Register map . . . . . . . . . . . . . . . . . . . . . . . . . 25 8.11.4.1 Control registers. . . . . . . . . . . . . . . . . . . . . . . 26 8.11.4.2 Configuration registers . . . . . . . . . . . . . . . . . . 27 8.11.4.3 Internal registers . . . . . . . . . . . . . . . . . . . . . . 28 8.11.4.4 Diagnostic registers . . . . . . . . . . . . . . . . . . . . 28 9 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 29 10 Thermal characteristics . . . . . . . . . . . . . . . . . 29 11 Static characteristics . . . . . . . . . . . . . . . . . . . 30 12 Dynamic characteristics. . . . . . . . . . . . . . . . . 31 13 Application information . . . . . . . . . . . . . . . . . 33 14 Test information . . . . . . . . . . . . . . . . . . . . . . . 33 14.1 Quality information . . . . . . . . . . . . . . . . . . . . . 33 15 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 34 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . 35 17 Legal information . . . . . . . . . . . . . . . . . . . . . . 36 17.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 36 17.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 17.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 36 17.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 37 18 Contact information . . . . . . . . . . . . . . . . . . . . 37 19 Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 20 Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 21 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 |
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