INFINEON TLE6288 R User Manual

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Preliminary Datasheet TLE6288 R

TLE 6288 R : Smart 6 Channel Peak&Hold Switch

Features Product Summary

• 3 Channel high side with adjustable P&H current control

• 3 Channel high / low side configurable

• Protection

Over Current (current limitation) Overtemperature Overvoltage (active clamping)

• Diagnosis

Over Current Over Temperature Open Load (Off-State) Short to Ground (Off-state, lowside configuration) Short to Vbb (Off-state, highside configuration)

• Interface and Control

16 Bit Serial Peripheral Interface (2bit/CH) Device programming via SPI Separate diagnosis output for each CH ( DIAG1 – 6) General Fault Flag + Overtemperature Flag Direct parallel control of all channels General enable signal to control all channels simultaneously

• Low Quiescent Current

• Compatible with 3.3V and 5V Microcontrollers

• Electostatic discharge (ESD) protection of all pins

Application

Supply voltage V

On resistance R

Lowside clamping voltage V

Highside clamping voltage V

Peak current range Ipk 1.2 - 3.6 A

Hold current range Ihd 0.7 - 2 A

Peak time range Ip 0 - 3.6 ms

Fixed off time range I

4.5 – 5.5 V

ON 1-6

+55 V

cll (max)

clh (max)

P-DSO 36-12

Ordering Code:

0.15 Ω

-19 V

100 – 400 µs

• Solenoids, Relays and Resistive Loads

• Fast protected Highside Switching (PWM up to >10kHz)

• Peak and Hold Loads (valves, coils)

General description

The TLE6288 R is a 6-channel (150mΩ) Smart Multichannel Switch in SPT4 Technology. The IC has embedded protection, diagnosis and configurable functions. Channel 1-3 are highside channels with integrated charge pump and can be programmed individually to do autonomous peak and hold current regulation with PWM. Channel 4-6 (also with integrated charge pump) can be configured to work as highside Switch or lowside Switch. This IC can be used to drive standard automotive loads in highside or lowside applications with switching frequencies up to 10kHz. In addition the TLE6288R can be used to drive autonomously up to 3 inductive Peak&Hold (valves, coils) loads with programmable peak and hold current values.

CLKProg

IN 1

IN 6

DIAG 1

DIAG 5

DIAG 6

Overtemp.

SCLK

Fault

Reset VDO

Logic

Configuration

Current Regulation

SPI

VCC

Chargepump

VCPGND FSIN

Channel 1-3

Highside 150 m

Peak&Hold

Protection

Diagnosis

Channel 4 -6

Highside/ Lowside 150 m

Ω

Protection

Diagnosis

DOUT 1

SOUT 1

DOUT 2

SOUT 2

DOUT 3 / VB

SOUT 3

DOUT 4

SOUT 4

DOUT 5

SOUT 5

DOUT 6

SOUT 6

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Preliminary Datasheet TLE6288 R

1. Block Diagram

Fault

CLKProg

IN 1

IN 2

IN 3

IN 4

IN 5

IN 6

DIAG 1

Reset VDO

. . . . .

Logic

. .

Driver

Diagnosis

Vcc

VCC DOUT 3 / VB

Channel 3 Highside 300 m Peak&Hold

Channel 2 Highside 300 m Peak&Hold

Channel 1 Highside 300 m Peak&Hold

Channel 4 Highside/ Lowside 300 m

Ω

SOUT 3

DOUT 2

Ω

SOUT 2

DOUT 1

Ω

SOUT 1

DOUT 4

SOUT 4

DIAG 5

DIAG 6

Overtemp.

SCLK

Vcc

GND

Channel 5 Highside/ Lowside 300 m

Ω

Channel 6 Highside/ Lowside 300 m

Ω

DOUT 5

SOUT 5

DOUT 6

SOUT 6

SPI

Vcc

Charge pump

VCPGNDFSIN

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Preliminary Datasheet TLE6288 R

2. Functional description

Block diagram will be added

Channel 1..3:

Only High Side Drive with Charge Pump.

Current Control

Default 2.4A peak and 1A hold with adjustable values by SPI

Types of current control are switched by SPI. ( Refer to Fig. 1)

Current regulation: Peak Current Controller with fixed Off-Time

Peak Current, Peak Time, Hold Current and Off-Time can be selected by SPI

to set average and ripple current for a given load

Channel 4..6:

Either High or Low Side Drive is configurable (by SPI)

Open load detection and switch bypassed detection can be deactivated by SPI

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Preliminary Datasheet TLE6288 R

Protection: The TLE6288R has integrated protection functions1 for overload and short circuit (active current limitation), Overtemperature, ESD at all pins and overvoltage at the power outputs (zener clamping).

Output Stage Control: Parallel Control and SPI Control

A Boolean operation (either AND or OR) is performed on each of the parallel inputs IN 1..6 and respective SPI data bits, in order to determine the states of the respective outputs. The type of Boolean operation performed is programmed via the serial interface. Both, parallel inputs and respective SPI databits are high active.

Truth table

parallel

Input

0 0 OFF OFF

0 1 ON OFF

1 0 ON OFF

1 1 ON ON

SPI

Bit

Output

AND

IN 1…6

AND

Output Driver

Serial Input bits 6 - 11 of comman d „Ch annels on / off „

Each output is independently controlled by an output latch and a common reset line FSIN, which disables all outputs. A logic high input ‘data bit’ turns the respective output channel ON, a logic low ‘data bit’ turns it OFF.

Overtemperature Behavior:

Each channel has an overtemperature sensor and is individually protected against overtemperature. As soon as overtemperature occurs the channel is immediately turned off. In this case here are two different behavoirs of the affected channel that can be selected by SPI (for all channels generally). Autorestart: as long as the input signals of the channel remains on (e.g. parallel input high) the channel turns automatically on again after cooling down. Latching: After overtemperature shutdown the channel stays off until the this ovetemperature latch is reset by a new LÆH transition of the input signal. Note: These overtemperature sensors of the channels are only active if the channel is turned on.

An additional overtemperature sensor is located in the logic of the device. I monitors permanently the IC temperature. As soon as the IC temperature reaches a specified level an overtemperature fault will be indicated.

Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are

considered as "outside" normal operating range. Protection functions are not designed for continuous repetitive operation

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Preliminary Datasheet TLE6288 R

Current Regulator : Peak current control with fixed off-time

Hold only : When the channel is turned on externally (SPI or parallel input) the current rises to the programmed hold current level. Then the channel is internally turned off and a timer is started for a constant off-time (e.g. 200µs). After this time the channel is internally turned on again until the hold current level is reached again and so on. This regulation workes automatically until the channel is turned of externally.

Peak and hold mode with minimum peak time: When the channel is turned on the current rises to the programmed peak current level. Then the channel is internally turned off, the current regulator changes to hold current values and a timer is started for a constant off-time. After this time the channel is internally turned on again until the hold current value is reached and then again turned off for the fixed off time. This regulation workes automatically until the channel is turned of externally.

Peak and hold mode with programmed peak time: When the channel is turned on the current rises to the programmed peak current level. Then the channel is internally turned off and a timer is started for a constant off-time. After this time the channel is internally turned on again until the peak current value is reached and then again turned off. This works until the programmed peak time is over. Then the current regulator changes to hold current values and workes as described under "hold only". Peak Current, Peak Time, Hold Current and fixed Off-Time can be set via SPI.

To avoid regulation disturbances by current transients during switching (e.g. caused by ESD capacitors at the outputs) the current regulator has a "leading edge blanking" of typical 20µs in all three regulation modes. After turning on the DMOS (internally or externally) the current regulation circuit is deactivated for the first 20µs. This guarantees that switching of the DMOS itself or charging of small capacitors at the output (e.g. ESD) is not disturbing the current regulation.

Simplified functional block diagram:

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Preliminary Datasheet TLE6288 R

Current Waveforms of the different current control modes

Input Signal

No Regulation Current defined only by load

Hold only

Peak & Hold

with min. peak time

Peak and Hold

with set peak time

Fig.1

Current forms of the different current control modes of channel 1-3

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Preliminary Datasheet TLE6288 R

3. Pin Configuration

SOUT4

DOUT4

DOUT1

SOUT1

DIAG1

DIAG2

DIAG3

DIAG4

DIAG5

DIA6/Overtemp

SOUT2

DOUT2

DOUT5

SOUT5

Name Function Pin Nr. Name Function

Nr.

SOUT4 Source Output CH 4 (high / low side)

DOUT4 Drain Output CH 4 (high / low side)

DOUT1 Drain Output CH 1(high side)

SOUT1 Source Output CH 1 (high side)

IN4 Control Input Channel 4

IN1 Control Input Channel 1

DIAG1 Diagnostic Output CH 1

DIAG2 Diagnostic Output CH 2

DIAG3 Diagnostic Output CH 3

DIAG4 Diagnostic Output CH 4

DIAG5 Diagnostic Output CH 5

DIAG6/Overtemp Diagnostic Output CH 6 / Overtemp

IN2 Control Input Channel 2

IN5 Control Input Channel 5

SOUT2 Source Output CH 2 (high side)

DOUT2 Drain Output CH 2(high side)

DOUT5 Drain Output CH 5 (high / low side)

SOUT5 Source Output CH 5 (high / low side)

IN4

IN1

IN2

IN5

TLE6288 R

(S0999)

SOUT6

DOUT6

_CS

SCLK

CLK Prog

VDO

VCC Reset

IN6

IN3

Fault

GND

FSIN

VCP

DOUT3

SOUT3

Package: Power-P-DSO-36

0.65mm Pitch

SOUT3 Source Output CH 3 (high side)

DOUT3 Drain Output CH 3(high side)

VCP Charge Pump pin

FSIN All Channels Enable / Disable

GND Logic Ground

Fault General Fault Flag

IN3 Control Input Channel 3

IN6 Control Input Channel 6

Reset Reset pin (+ Standby Mode)

VCC Logic Supply Voltage (5V)

VDO Supply Pin for digital outputs

SO SPI Serial Data Output

CLKProg Program pin of SPI Clock

SCLK SPI Serial Clock

SI SPI Serial Data Input

DOUT6 Drain Output CH 6 (high / low side)

SOUT6 Source Output CH 6 (high / low side)

SPI Chip Select

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