MC15XS3400 FREESCALE [Freescale Semiconductor, Inc], MC15XS3400 Datasheet - Page 23

• Manufacturer Part Number: MC15XS3400
• Description: Quad High Side Switch (Quad 15m?)
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

POWER SUPPLY
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 15mΩ R
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.
Analog Integrated Circuit Device Data
Freescale Semiconductor
The 15XS3400 is designed to operate from 4.0V to 28V on
These pins are the high side outputs controlling
PWR
and V
DD
DS(ON)
to the device will place the device in
15XS3400 - Functional Block Diagram
Power Supply
MCU Interface & Output Control
are self-protected and
SPI Interface
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Parallel Control Inputs
Power Supply
MCU Interface & Output Control
PWM Controller
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.
When driving DC motors or solenoid loads, demanding
In Normal mode, each bulb is controlled directly from the
In Fail-safe mode, each lamp is controlled with dedicated
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Self-Protected
HS0 - HS3
High Side
Switches
Switches
FUNCTIONAL DESCRIPTION
15XS3400
23