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User's Guide

SLVU456B–May 2011–Revised May 2013

TPS22924EVM-532

This user's guide describes the characteristics, operation, and use of the TPS22924EVM-532 evaluation

module (EVM). This EVM demonstrates the Texas Instruments TPS22924 load switch with controlled turn

on. The input voltage range of the TPS22924 is 0.75 V to 3.6 V. An integrated charge pump biases the

NMOS switch to achieve a minimum switch ON resistance. The switch is controlled by an on/off input

(EN), which is capable of interfacing directly with low-voltage control signals. This user's guide includes

setup instructions, schematic diagram, bill of materials, and printed-circuit board layout drawings for the

EVM.

1 Introduction

The TPS22924EVM-532 evaluation module (EVM) helps designers evaluate the operation and

performance of the TPS22924 load switch. The board features the small 6-pin CSP package for a small

solution size.

Table 1. TPS22924 VOUT Rise Time Options

EVM Device Rise Time VIN (V) Max. Enable (ON Quick

(µs) Typical Continuous Pin) Output

Current Discharge

HPA532-001 TPS22924B 100 3.6 2-A Active High Yes

HPA532-002 TPS22924C 840 3.6 2-A Active High Yes

HPA532-003 TPS22924D 6200 3.6 2-A Active High Yes

1.1 Related Documentation From Texas Instruments

TPS22924, ULTRA-SMALL, LOW-INPUT-VOLTAGE, LOW r

LOAD SWITCH data sheets (SLVSA52,

SLVSAR3, SLVSBT4)

2 Setup

This section describes the jumpers and connectors on the EVM as well as how to properly connect, set

up, and use the TPS22924EVM-532.

2.1 J1/J3 – Input Connections

This is the connection for the leads from the input source. Connect the positive connection to the VIN J1

and the negative connection to the GND J3.

2.2 J4/J6 – Output Connections

This is the connection for the output of the TPS22924EVM. Connect the positive connection of the load to

the VOUT J4 and the negative connection to the GND J6.

SLVU456B–May 2011–Revised May 2013 TPS22924EVM-532

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Summary of content (10 pages)

PAGE 1
User's Guide SLVU456B – May 2011 – Revised May 2013 TPS22924EVM-532 This user's guide describes the characteristics, operation, and use of the TPS22924EVM-532 evaluation module (EVM). This EVM demonstrates the Texas Instruments TPS22924 load switch with controlled turn on. The input voltage range of the TPS22924 is 0.75 V to 3.6 V. An integrated charge pump biases the NMOS switch to achieve a minimum switch ON resistance.
PAGE 2
Operation 2.3 www.ti.com JP3 – EN This is the enable input for the device. Place a shorting jumper across the HI and EN pins of JP3 to enable the integrated circuit (IC). Place a shorting jumper across the LO and EN pins of JP3 to disable the IC. A shorting jumper must be installed on JP3 in either the ON or OFF positions, and EN must not be left unconnected. An external enable source can be applied to the TPS22924 by removing the shunt and connecting a signal to the center pin of JP3. EN ≥ 0.
PAGE 3
Test Configurations www.ti.com 5 Test Configurations 5.1 On State Resistance (rON) Test Setup Figure 1 shows a typical setup for measuring On State Resistance. The voltage drop across the switch is measured using the sense connections then divided by the current into the load yielding the rON resistance Figure 1. rON Setup 5.2 Slew Rate Test Setup Figure 2 shows a test setup for measuring the Slew Rate of the Load Switch.
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Board Layout, Schematic, and Bill of Materials www.ti.com Figure 3. Top Assembly Layer Figure 4.
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Board Layout, Schematic, and Bill of Materials www.ti.com 6.2 Schematic and Bill of Materials Figure 5. TPS22924EVM-532 Schematic Table 2. Bill of Materials (1) (2) (3) (4) (1) (2) (3) (4) -001 COUNT -002 COUNT -003 COUNT RefDes Value 1 1 1 -- 1 1 1 C3 0.
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Board Layout, Schematic, and Bill of Materials Table 3. www.ti.com Table 3. (continued) Table 3 Table 3 Assembly number Text HPA532-001 TPS22924BEVM-532 HPA532-002 TPS22924CEVM-532 HPA532-003 TPS22924DEVM-532 5.3 VOUT Rise Time and TON Response Figure 6.
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Board Layout, Schematic, and Bill of Materials www.ti.com Figure 7.
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Board Layout, Schematic, and Bill of Materials www.ti.com Figure 8.
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Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
PAGE 10
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.