Texas Instruments DRV5032-SOLAR-EVM User Manual
User's Guide
SLVUB45–June 2017
DRV5032-SOLAR-EVM
This user’s guide describes the characteristics, operation, and use of the DRV5032 solar evaluation
module (EVM). This EVM is designed to evaluate the performance of the DRV5032 ultra-low power digital
switch Hall-effect sensor. This document includes a schematic, printed-circuit board (PCB) layouts, and a
complete bill of materials.
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1 Overview...................................................................................................................... 3
2 DRV5032-SOLAR-EVM Hardware ........................................................................................ 3
3 Quick Start Setup and Use ................................................................................................. 4
4 DRV5032-SOLAR-EVM Circuit ............................................................................................ 5
5 DRV5032-SOLAR-EVM Schematic and PCB Layout................................................................... 6
6 Bill of Materials............................................................................................................... 8
1 DRV5032-SOLAR-EVM Schematic ....................................................................................... 6
2 DRV5032-SOLAR-EVM Top Overlay ..................................................................................... 7
3 DRV5032-SOLAR-EVM Top Solder Mask ............................................................................... 7
4 DRV5032-SOLAR-EVM Top Layer........................................................................................ 7
5 DRV5032-SOLAR-EVM Bottom Layer ................................................................................... 7
6 DRV5032-SOLAR-EVM Drill Drawing..................................................................................... 7
1 DRV5032-SOLAR-EVM Kit Contents ..................................................................................... 3
2 Related Documentation ..................................................................................................... 3
3 DRV5032-SOLAR-EVM Bill of Materials.................................................................................. 8
Trademarks
All trademarks are the property of their respective owners.
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Contents
List of Figures
List of Tables
2
DRV5032-SOLAR-EVM
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1 Overview
The DRV5032FB device is an ultra-low-power digital switch Hall-effect sensor, designed for the most
compact and battery-sensitive systems.
When the applied magnetic flux density exceeds the BOPthreshold, the device output drives a low voltage.
The output stays low until the flux density decreases to less than BRP, and then the output either drives a
high voltage or becomes high impedance, depending on the device version. By incorporating an internal
oscillator, the device samples the magnetic field and updates the output at a rate of 20 Hz, or 5 Hz for the
lowest current consumption.
The device operates from a VCC range of 1.65 V to 5.5 V, and is packaged in a standard SOT-23.
1.1 DRV5032-SOLAR-EVM Kit Contents
Table 1 lists the contents of the DRV5032-SOLAR-EVM kit. Contact the nearest Texas Instruments
Product Information Center if any component is missing. TI highly recommends checking the DRV5032
family product folder on the TI website at www.ti.com for further information regarding this product.
Table 1. DRV5032-SOLAR-EVM Kit Contents
Item Quantity
DRV5032-SOLAR-EVM test board 1
Handheld magnet (8182) 1
Overview
1.2 Related Documentation From Texas Instruments
The following document provides information regarding TI's integrated circuits used in the assembly of the
DRV5032-SOLAR-EVM. This user's guide is available from the TI website under literature number
SLVUB45 . Any letter appended to the literature number corresponds to the document revision that is
current at the time of the writing of this document. Newer revisions are available from www.ti.com or the
Texas Instruments' Literature Response Center at (800) 477-8924 or the Product Information Center at
(972) 644-5580. When ordering, identify the document by both title and literature number.
Table 2. Related Documentation
Document Literature Number
DRV5032 product data sheet SLVSDC7
2 DRV5032-SOLAR-EVM Hardware
The DRV5032-SOLAR-EVM is a compact, easy-to-use platform for evaluating the main features and
performance of the DRV5032 ultra-low power digital switch Hall-effect sensor across its specified input
voltage and temperature ranges. The EVM features an onboard solar panel to power the device
highlighting its ultra-low power design. The EVM also contains an LED indicator to conveniently show
when the device output has been triggered.
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DRV5032-SOLAR-EVM Hardware
2.1 Features
The layout of the DRV5032-SOLAR-EVM printed-circuit board (PCB) is designed to provide the following
features:
• Ultra-low power
• Onboard solar panel
• LED indicator to conveniently show when device output has been triggered
See the DRV5032 data sheet (SLVSDC7) for comprehensive information about the DRV5032FB device.
3 Quick Start Setup and Use
The following are instructions to set up and use the DRV5032 on the DRV5032-SOLAR-EVM:
Setup using the onboard test hardware:
Step 1. Power supply (solar panel): Connect jumpers across the pins for J1 and J3. Ensure that the
solar panel is in a well lighted area.
Step 2. Device output (LED indicator): Connect a jumper across the pins for J2.
Step 3. Test the DRV5032 Hall-effect sensor as described in Section 3.1.
Setup using external test hardware:
Step 1. Power supply: Remove the jumpers across the pins for J1 and J3. Connect an external DC
supply voltage between 1.65-V and 5.5-V to the VCC pin side of J1,and connect ground
reference of that supply to the GND pin side of J3.
Step 2. Device output: Remove the jumper across the pins for J2. Connect desired measurement tool
to the OUT pin side of J2.
Step 3. Test the DRV5032 Hall-effect sensor as described in Section 3.1.
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NOTE: When using an external voltage source, you must also use an external voltage measurement
tool to view the device output, however, you may still view the device output with an external
voltage measurement tool while using the onboard solar panel.
3.1 Measurements
The DRV5032-SOLAR-EVM enables the user to test the functionality of the DRV5032 Hall-effect sensor
using either the onboard hardware or external hardware, which must first be setup as described in
Section 3.
The following test procedures are to be used for both onboard and external hardware.
Step 1. Trigger the DRV5032 device output: Lower either the north or south pole of a magnet directly
over the DRV5032FB Hall-effect sensor.
Step 2. Observe the output: If using the onboard hardware, observe the indicator light D1 blink when
the magnet gets close to the Hall-effect sensor. Alternatively, observe the voltage drop on an
external voltage measuring device.
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4 DRV5032-SOLAR-EVM Circuit
This section summarizes the DRV5032-SOLAR-EVM components.
4.1 C1
C1 is a 22-µF storage capacitor to power the LED.
4.2 C2
C2 is a 0.1-µF supply bypass capacitor for the DRV5032FB Hall-effect sensor.
4.3 D1
D1 is the LED indicator to show when the DRV5032FB BOPthreshold has been crossed.
4.4 J1
J1 is a jumper that connects the power of the solar cell to VCC. When removed, an external VCC may be
applied. This must be used in conjunction with J3.
4.5 J2
J2 is a jumper that connects the DRV5032FB output to the LED indicator. When removed, an external
voltage meter may be used to observe the output.
DRV5032-SOLAR-EVM Circuit
4.6 J3
J3 is a jumper that connects the ground of the solar cell to GND. When removed, an external GND may
be applied. This must be used in conjunction with J1.
4.7 U1
U1 is the DRV5032FB test device. Lower a north or south pole of a magnet over this device to cross its
BOPthreshold and drive its out pin low.
4.8 U2
U2 is the solar panel that can optionally power the DRV5032-SOLAR-EVM.
4.9 U3
U3 is a voltage supervisor to used to monitor the voltage from the solar cell.
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