Texas Instruments HVAL068A, Руководство пользователя

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User's Guide
SLVU984 – December 2013
Automotive Cranking Simulator User’s Guide
The Texas Instruments HVAL068A automotive cranking simulator helps designers evaluate the
performance of automotive power supplies. This document describes the setup, input and output
connections of the board, and the firmware as well. Included are the board layout, schematic, and bill of
materials.
Contents
1 Introduction
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2 Setup
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2
2.1 Board Overview
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3
2.2 Input/Output connector Description
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3 Operation
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4 VID Interface
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4.1 Modifying the Cranking Pulses
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4.2 Programming the Microcontroller
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5 Mechanical Parts and Housing
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6 Board Layout
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7 Schematics
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8 Bill of Materials
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List of Figures
1 HVAL068A EVM Board
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2 Board Overview
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3 Program 1, 2 s/div – DaimlerChrysler Engine-Cranking Test Pulse, DC-10615
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5
4 Program 2, 200 ms/div – Volkswagen Warm-Start Test Pulse, VW80000
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5 Program 3, 2 s/div – Volkswagen Cold-Start Test Pulse, VW80000
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6 VID Interface
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7 Top Assembly Layer
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8 Bottom Assembly Layer
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9 Top Layer Routing
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10 Bottom Layer Routing
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11 Input Filter, Bias Supply, VID-Interface (Schematic 1 of 4)
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12 Adjustable Synchronous Buck Converter (Schematic 2 of 4)
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13 LEDs, Trigger Input (Schematic 3 of 4)
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14 Microcontroller, Trigger Output, Switches, JTAG Interface, Reset Circuit (Schematic 4 of 4)
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List of Tables
1 Optional Mechanical Housing
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2 Bill of Materials
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1 SLVU984 – December 2013 Automotive Cranking Simulator User’s Guide
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