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ASL2500SHN Datasheet(PDF) 39 Page - NXP Semiconductors

Part # ASL2500SHN
Description  Two phase boost converter
PDF  39 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

ASL2500SHN Datasheet(HTML) 39 Page - NXP Semiconductors

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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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