BTS6480SF datasheet(5/73 Pages) INFINEON

5 / 73 page

SPOC - BTS6480SF

Overview

Data Sheet

Rev. 1.0, 2010-04-12

Configuration and status diagnosis are done via SPI. The SPI is daisy chain capable. The device provides a

current sense signal per channel that is multiplexed to the diagnosis pin IS. It can be enabled and disabled via SPI

commands. An over load and over temperature flag is provided in the SPI diagnosis word. A multiplexed switch

bypass monitor provides short-circuit to VBB diagnosis. In OFF state a current source can be switched to the output

of one selected channel in order to detect an open load.

Additionally, there is an integrated PWM generator implemented, which allows autonomous PWM operation with

programmable phase shifts, duty cycles and PWM frequencies. The status diagnosis and the current sense signal

is available for each channel.

The device provides an external driver capability for two external devices. For each external driver there are two

control outputs available: one output for controlling the input and one output for diagnosis enable input. The current

sense output of the external smart power drivers can be connected to the IS pin. The external drivers can be

controlled by the automatic PWM generator as well.

The SPOC - BTS6480SF provides a fail-safe feature via limp home input pin.

The power transistors are built by N-channel vertical power MOSFETs with charge pumps.

Protective Functions

•

Reverse battery protection with external components

•

ReversaveTM - Reverse battery protection by self turn on of channels 0, 1, 2 and 3

•

Short circuit protection

•

Over load protection

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Thermal shutdown with latch and dynamic temperature sensor

•

Over current tripping

•

Over voltage protection

•

Loss of ground protection

•

Electrostatic discharge protection (ESD)

Diagnostic Functions

•

Multiplexed proportional load current sense signal (IS)

•

Enable function for current sense signal configurable via SPI

•

High accuracy of current sense signal at wide load current range

•

Current sense ratio (kILIS) configurable for LEDs or bulbs for channel 2 and 3

•

Very fast diagnosis in LED mode

•

Feedback on over temperature and over load via SPI

•

Multiplexed switch bypass monitor provides short circuit to VBB detection

•

Integrated, in two steps programmable current source for open load in OFF-state detection

Application Specific Functions

•

Fail-safe activation via LHI pin

•

Control of two additional loads with external smart power switches

Applications

•

High-side power switch for 12 V grounded loads in automotive applications

•

Especially designed for standard exterior lighting like high beam, low beam, indicator, parking light and

equivalent LEDs

•

Load type configuration via SPI (bulbs or LEDs) for optimized load control

•

Replaces electromechanical relays, fuses and discrete circuits

BTS6480SF Datasheet(PDF) 5 Page - Infineon Technologies AG

BTS6480SF Datasheet(HTML) 5 Page - Infineon Technologies AG

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