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User's Guide

SNAU147–July 2013

TPL5000EVM User's Guide

1 Introduction

The Texas Instruments TPL5000EVM evaluation module (EVM) allows a designer to configure the delay

timers of the TPL5000 and measure its very low current consumption. Moreover, the TPL5000EVM is

ready to be connected to the Launchpads of MSP430, Stellaris and C2000, in order to test its watchdog,

timer cycling, and power cycling features.

Figure 1. The LMP91010 Evaluation Board

2 Setup

This section describes how to properly connect, set up and use the TPL5000EVM.

SNAU147–July 2013 TPL5000EVM User's Guide

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Summary of content (10 pages)

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User's Guide SNAU147 – July 2013 TPL5000EVM User's Guide 1 Introduction The Texas Instruments TPL5000EVM evaluation module (EVM) allows a designer to configure the delay timers of the TPL5000 and measure its very low current consumption. Moreover, the TPL5000EVM is ready to be connected to the Launchpads of MSP430, Stellaris and C2000, in order to test its watchdog, timer cycling, and power cycling features. Figure 1.
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Setup 2.1 www.ti.com INPUT/OUTPUT CONNECTORS AND JUMPER DESCRIPTION I_SEL selects the current consumption measurement method: Open, current consumption measured with DMM connected between TP1 and VDD test points. 3-2 shorted, current consumption = Voltage drop on R_SH divided by R_SH 1-2 R_SH bypass 5-pin header connector to bring out RSTn, WAKE, TCAL, DONE and GND signals. 4 SPDT positions to set the D0, D1, D2 logic values and the source of the PGOOD signal (refer to Table 1) IO S1 Table 1.
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Supply Current Measurement www.ti.com • • • • Set the desired delay, configuring S1 (from position 2 to 4). Set the POWER GOOD source configuring S1 (position 1), if you set external source connect the voltage source between the EXT_PGOOD and GND test points; do not turn on this voltage source. Refer to the data sheet regarding the allowable voltage range. This can be found on the MSP430 LaunchPad Wiki (MSP430 LaunchPad (MSP-EXP430G2) Wiki). Configure I_SEL as explained in Section 2.1.
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Bill of Materials (BOM) VDD test points. Read the current consumption on the DMM. • 3.2 INDIRECT MEASUREMENT • • Short pin 2 and 3 of I_SEL. DO NOT LEAVE DIGITAL INPUT PINS FLOATING; for instance: – Short the DONE pin (4th pin of IO header) to GND – Set PGOOD =1 (see Table 1) Connect a Digital Multi Meter, configured as a voltage meter, between TP1 and VDD test points. Read the voltage drop on the R_SH on the DMM. The current consumption is simply the voltage drop on R_SH, divided by 1Mohm.
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Source Code of MSP430 Present in the Launchpad www.ti.com P1DIR P1DIR P1DIR P2DIR P2DIR |= |= &= &= |= BIT0; BIT6; ~BIT3; ~BIT0; BIT4; // Set P1.0 to output direction RED LED // Set P1.6 to output direction GREEN LED // Set P1.3 S2 button to input // Set P2.0 (WAKE) to input // Set P2.4 (Done) to output direction P1OUT |= BIT0; __delay_cycles(25000); P1OUT &= ~BIT0; // RED LED ON // delay 25ms // Clear P1.
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Source Code of MSP430 Present in the Launchpad // Port 1 interrupt service routine #pragma vector=PORT1_VECTOR __interrupt void Port_1(void) { if (DONE == 1) { DONE = 0; } else { DONE = 1; } P1IFG &= ~BIT3; P1IES |= BIT3; } 6 www.ti.com // enabled/disabled and viceverasa DONE signal // P1.3 IFG cleared // P1.
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www.ti.
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www.ti.com Appendix B Layout Figure 2.
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Appendix B www.ti.com Figure 3.
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