Freescale Semiconductor eXtreme Switch Gen4, Руководство пользователя

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Introduction
KTXSWITCH4UG User’s Guide Rev. 1.0 11/2013
4 Freescale Semiconductor, Inc.
4 Introduction
This evaluation board demonstrates the capability of the latest eXtreme Switch Gen4 family. This family offers
new combinations of output channels as well as a selection of Rdson values. All devices are
footprint-compatible; therefore, they can all be evaluated using this evaluation board.
This evaluation board can be used to evaluate either the MC07XS6517 or the MC17XS6500 which are both
12 V penta high side devices that feature integrated control with high flexibility, and high number of protection
and diagnostic functions. These devices are designed for low-voltage automotive lighting applications and can
drive a wide range of sources, including HIB ballasts and LEDs.
Programming, control and diagnostics are accomplished using a 16-bit SPI interface, which makes possible a
large array of configurations, diagnostics and protection features. For example, see below:
•
Configuration: Output slew rates, PWM frequency with prescaler, output phasing, current sense precision,
etc.
• Protection and diagnostics: under/overvoltage, thermal warning, overcurrent, open load, SPI fail, etc.
These devices also provide analog feedback of the IC's temperature, battery voltage or selectable-channel
current sensing with high precision.
The five channels can be controlled individually by external clock signal or in fail safe mode by using direct inputs
(available for OUT1 through OUT4). This fail-safe mode operation happens whenever communication with the
external microcontroller is lost (due to watchdog time-out) and all protection as well as control remains
operational.
5 Evaluation Board Features
This evaluation board consists of either an MC07XS6517 or MC17XS6500 IC in SOIC 54 or 32 pins with
exposed pads.
This board can control
•
Five separate 28 W bulbs
• Three separate 55 W HID ballasts
• Five separate LED modules
• Five separate loads of other types
Device can be driven by the 16-bit SPI using KITUSBSPI with SPIGen software or with direct input signals in
Fail safe mode operation. It also offers the possibility to apply an external clock in order to drive outputs in PWM
operation.
6 MC07XS6517 and MC17XS6500 Device Features
MC07XS6517 and MC17XS6500 are smart + power ICs intended for lighting application. The devices supports
the following functions:
•
Five protected high side switches
–
3*7 mOhms + 2*17 mOhms for the MC07XS6517
– 5*17 mOhms for the MC17XS6500
• Operating voltage range from 6.0 V to 18 V with sleep current < 5.0 µA.
• 16-bit 5.0 V SPI control, programming and status reporting with daisy chain capability
• PWM module using external clock with programmable slew rates (to satisfy EMC requirements), 8-bit
flexibility for duty cycle and output delay management.
• Smart overcurrent shutdown, severe short circuit detection, overtemperature protections, output short to
battery, undervoltage or overvoltage reporting, etc.
• Open load detection in On or Off state, available for bulbs and LEDs
• Analog temperature and voltage feedback, so current with selectable ratio is optimized for LEDs modules