Texas Instruments TPS1213Q1EVM Manuel utilisateur

EVM User's Guide: TPS1213Q1EVM TPS1213-Q1

TPS1213-Q1 Evaluation Module for Smart High-Side

Driver

Description

The TPS1213Q1EVM allows reference circuit

evaluation of TI's TPS1213-Q1 smart high-side driver.

The TPS1213-Q1 device has operating range of

3.5V-40V and has main path gate drive with 1.69-A

strength to enable switching parallel MOSFETs in high

current designs. The TPS12130-Q1 has low-power

mode to support always ON loads while consuming

28 µA (typ). In low power mode, only the low power

path FET is kept ON and the main FETs are turned

OFF to save IQ. The device provides adjustable

short circuit protection with configurable auto-retry

and latch-off fault behavior.

Features

• 3.5-V to 40-V operating voltage range

• 15-A to 50-A adjustable short circuit protection

using onboard jumpers

• Programmable short-circuit protection delay

• Programmable load wakeup threshold

• Programmable auto-retry and latch options

• LED status indication for fault and Active mode

Applications

•Automotive 12 V BMS

•Power distribution box

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TPS1213-Q1 Evaluation Module for Smart High-Side Driver 1

1 Evaluation Module Overview

1.1 Introduction

This user’s guide describes the TPS1213-Q1 evaluation module (EVM). This guide provides configuration

information, test setup details and contains the EVM schematics, bill of materials, assembly drawings, and top

and bottom board layouts.

CAUTION

Hot surface. Contact can cause burns. Do not touch.

1.2 Kit Contents

Table 1-1. TPS1213Q1EVM Kit Contents

Item Description Quantity

TPS1213Q1EVM PCB 1

1.3 Specification

• 6-V to 36-V (typ) operation

• Current sensing using MOSFET VDS

• Programmable load wakeup threshold

1.4 Device Information

The TPS1213-Q1 is a 45-V low IQ smart high side driver with protection and diagnostics. With wide operating

voltage range of 3.5 V–40 V, the device is an excellent choice for 12-V system designs. The device can

withstand and protect the loads from negative supply voltages down to –40 V. The device has integrated two

gate drives with 1.69-A src/2-A sink capacity to drive MOSFETs in the main path and 150-μA src/2-A sink

capacity for the low power path.

In the low power mode with LPM = Low, the low power path FET is kept ON and the main FETs are turned OFF.

The device consumes low IQ of 35- μA (typ) in this mode. Auto Load wakeup threshold to enter into active state

can be adjusted using ISCP/LWU pin. IQ reduces to 1-μA (typ) with EN/ UVLO low.

The device provides adjustable short circuit protection using MOSFET VDS sensing or by using an external

RSNS resistor. Auto-retry and latch-off fault behavior can be configured. The device also features diagnosis of

the internal short circuit comparator using external control on SCP_TEST input.

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2 Hardware

The TPS1213Q1EVM evaluation board enables evaluation of TPS12130-Q1 driver. The input power is applied

between connectors T1 and T3 while T2 and T4 provide an output connection to the load, Refer to the schematic

in Figure 4-1 and EVM test setup in Figure 3-1.

D3 provides the fault indication output for under-voltage fault, short-circuit fault and during SCP comparator

diagnosis whereas D4 provides the device is in active mode.

Table 2-1. TPS1213Q1EVM Evaluation Board Options and Setting

Part Number EVM Function Vin Range Vin UVLO ENABLE

(EN/UVLO)

Short circuit

protection Features

Low Setting Hi Setting

TPS1213Q1EVM

Low IQ High Side

Switch Controller with

Low Power Mode

and Adjustable Load

Wakeup Trigger

6 V–36 V 6 V Active high 15 A 50 A

MOSFET VDS

sensing

Short-circuit

protection with Auto-

retry/ latch response

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TPS1213-Q1 Evaluation Module for Smart High-Side Driver 3

2.1 General Configurations

2.1.1 Physical Access

Table 2-2 lists the TPS1213Q1EVM Evaluation Board input and output connector functionality. Table 2-3 and

Table 2-4 describe the test point availability and the jumper functionality.

Table 2-2. Input and Output Connector Functionality

Connector Label Description

T1 VIN Power input connector to the positive rail of the input power supply

T3 PGND Ground connection for the power supply

T2 VOUT Power output connector to the positive side of the load

T4 PGND Ground connection for the load

Table 2-3. Test Points Description

Test Points Label Description

TP1 G2 GATE of the low power path MOSFET

TP2 VIN Input power supply to the EVM

TP3 VOUT Output from the EVM

TP4 EN/UVLO Enable control (active high) and undervoltage input

TP5 GATE GATE of the external main MOSFET

TP6 TMR Fault timer voltage

TP7 VAUX Auxiliary supply to bias the LEDs

TP8 INP Control input of main MOSFET

TP9 LPMb Low power mode control input

TP10 INP/ Inversion of control input for main MOSFET

TP11 LPM Inversion of control input for the low power mode

TP12 FLTb Fault output

TP13 WAKE Output to indicate active mode

TP14, TP15 PGND Power ground

TP16 GND Ground

TP17, TP18 CAP_INS Connector to insert output capacitor

TP19 SCP_TEST Internal short circuit comparator (SCP) diagnosis input

Table 2-4. Jumper and LED Descriptions

Jumper Label Description

J1 SCP_TEST Internal short circuit comparator (SCP) diagnosis input.

1-2 Position disables the diagnosis function.

J2 LPM 1-2 position forces the device to lower power mode.

J3 TMR

Short-circuit protection delay setting.

1-2 Position sets 1 ms delay.

3-4 Position sets 10 ms delay.

5-6 Position sets the controller in Latch-off mode.

J4 ISCP/LWU

Short-circuit protection threshold setting.

1-2 Position sets ISCP at 15 A and LWU at 11.5mA.

3-4 Position sets ISCP at 25 A and LWU at 17.5mA.

5-6 Position sets ISCP at 50 A and LWU at 35 mA.

J5 BST 1-2 position charges BST capacitor from the VIN.

(RED – LED) D3 Fault indicator. LED turns ON for under-voltage fault, short-circuit fault and during SCP

comparator diagnosis.

(GREEN – LED) D4 LED turns ON when device enters into active mode.

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2.1.2 Test Equipment and Setup

2.1.2.1 Power Supplies

One adjustable power supply with 0-V to 40V- output and 0-A to 50-A output current limit.

2.1.2.2 Meters

One DMM minimum needed.

2.1.2.3 Oscilloscope

A DPO2024 or equivalent, three 10 times voltage probes, and a DC current probe.

2.1.2.4 Loads

One resistive load or equivalent that can tolerate up to 50-A DC load at 40 V and capable of the output short.

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TPS1213-Q1 Evaluation Module for Smart High-Side Driver 5

3 Implementation Results

3.1 Test Setup and Procedures

Make sure the evaluation board has default jumper settings as shown in Table 3-1.

Table 3-1. Default Jumper Setting for TPS1213Q1EVM Evaluation Board

J1 J2 J3 J4 J5

Install Install 5-6 5-6 OPEN

Positive

Negative

Positive

Load

Negative

Voltmeter

HELP

ALPHA

SHIFT

ENTER

RUN

G T 3

WXYZ

TAB

% UTILIZATION

HUB/MAU NIC

BNC

4Mb/s

Oscilloscope

Power

Supply

Figure 3-1. TPS1213Q1EVM Setup with Test Equipment

Follow the below instructions before starting any test and repeat again before moving to next test.

• Set the power supply output (VIN) to zero volts.

• Turn ON the power supply and set the power supply output (VIN) to 12 V, current limit = 50 A.

• Turn OFF the power supply.

• Set the jumper setting on EVM to default position as shown in Table 3-1.

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3.1.1 Startup in Low Power Mode

Use the following instructions to verify the power up profile of TPS12130-Q1

1. Connect the EN/UVLO pin (TP4) to ground.

2. Now, enable the EN/UVLO to HIGH to verify the startup profile of BST, G2 and SRC.

Figure 3-2. Start-Up Profile of Low Power Path (LPMb = Low, VIN= 12 V, No-load, CBST = 470 nF)

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3.1.2 State Transition (LPM to Active Mode through Load Wakeup Trigger)

Use the following instructions to verify state transition of TPS12130-Q1 through load wakeup trigger

1. Apply 12 V at the input of the EVM at no-load.

2. Enable the EN/UVLO to HIGH.

3. Now, gradually increase the load current from 5 mA to 200 mA and observe the transition from low power

mode to Active mode at the pins of G1 (TP5), G2 (TP1), WAKE (TP13) and load current using oscilloscope.

Figure 3-3. State Transition from LPM to Active Mode (LPMb = Low, VIN= 12 V, EN/UVLO = High)

Figure 3-4. Zoom-in View of State Transition from LPM to Active Mode (LPMb = Low, VIN= 12 V, EN/UVLO

= High)

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Figure 3-5. As LPMb = Low, INP Has No Control on G1 Even After WAKEUP

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TPS1213-Q1 Evaluation Module for Smart High-Side Driver 9

3.1.3 State Transition (LPM to Active Mode with LPMb Trigger)

Use the following instructions to verify state transition of TPS12130-Q1 with LPMb trigger.

1. Apply 12 V at the input of the EVM at no-load.

2. Enable the EN/UVLO to HIGH.

3. Now, make LPMb from LOW to HIGH to see the state transition from LPM to active mode.

Figure 3-6. State Transition from LPM to Active Mode (LPMb = Low to High, VIN= 12 V, No-load)

Figure 3-7. With LPMb = Low to High, INP Gained Control on G1 (VIN= 12 V, No-load)

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