mc10xs3412 Freescale Semiconductor, Inc, mc10xs3412 Datasheet - Page 24

• Manufacturer Part Number: mc10xs3412
• Description: Quad High Side Switch Dual 10m, Dual 12m
• Manufacturer: Freescale Semiconductor, Inc

POWER SUPPLY
on the VPWR pin. Characteristics are provided from 6.0V to
20V for the device. The VPWR pin supplies power to internal
regulator, analog, and logic circuit blocks. The VDD supply is
used for Serial Peripheral Interface (SPI) communication in
order to configure and diagnose the device. This IC
architecture provides a low quiescent current Sleep Mode.
Applying V
the Normal Mode. The device will transit to Fail-safe Mode in
case of failures on the SPI or/and on VDD voltage.
HIGH SIDE SWITCHES: HS0 – HS3
automotive lamps located for the front of vehicle, such as
65W/55W bulbs and Xenon-HID modules. Those N-channel
MOSFETs with 10mΩ & 12mΩ R
and present extended diagnostics in order to detect bulb
outage and short-circuit fault condition. The HS output is
actively clamped during turn off of inductive loads and
inductive battery line. When driving DC motor or Solenoid
24
10XS3412
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
The 10XS3412B is designed to operate from 4.0V to 28V
These pins are the high side outputs controlling
PWR
Power Supply
and V
MC10XS3412 - Functional Block Diagram
MCU Interface and Output Control
DD
to the device will place the device in
Parallel Control Inputs
DS(ON)
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Power Supply
PWM Controller
SPI Interface
are self-protected
MCU Interface and Output Control
loads demanding multiple switching, an external recirculation
device must be used to maintain the device in its Safe
Operating Area.
MCU INTERFACE AND OUTPUT CONTROL
MCU through SPI. A pulse width modulation control module
allows improvement of lamp lifetime with bulb power
regulation (PWM frequency range from 100Hz to 400Hz) and
addressing the dimming application (day running light). An
analog feedback output provides a current proportional to the
load current or the temperature of the board. The SPI is used
to configure and to read the diagnostic status (faults) of high
side outputs. The reported fault conditions are: open load,
short circuit to battery, short circuit to ground (over-current
and severe short-circuit), thermal shutdown, and under/over-
voltage. Thanks to accurate and configurable over-current
detection circuitry and wire-harness optimization, the vehicle
is lighter.
parallel input pins. The device is configured in default mode.
In Normal Mode, each bulb is controlled directly from the
In Fail-safe Mode, each lamp is controlled with dedicated
Self-protected High Side Switches
High Side Switches
Analog Integrated Circuit Device Data
Self-protected
HS0 - HS3
Freescale Semiconductor