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| 型号： | MC15XS3400CPNAR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 25/52页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH HIGH SIDE QUAD 24-QFN |
| 标准包装： | 1,200 |
| 类型： | 高端开关 |
| 输出数： | 4 |
| Rds（开）： | 15 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 5A |
| 输入电压： | 6 V ~ 20 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-PowerQFN |
| 供应商设备封装： | 24-PQFN（12x12） |
| 包装： | 带卷 (TR) |
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FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
15XS3400 - Functional Block Diagram
Power Supply
Internal Regulator
MCU Interface & Output Control
Self-Protected
High Side
Switches
SPI Interface
PWM Controller
HS0 - HS3
Parallel Control Inputs
Power Supply
MCU Interface & Output Control
Switches
POWER SUPPLY
The 15XS3400 is designed to operate from 4.0 V to 28 V
on the VPWR pin. Characteristics are provided from 6.0V to
20 V 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 PWR and V DD to the device will place the device in
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
These pins are the high side outputs controlling
automotive lamps located for the front of vehicle, such as
65 W/55 W bulbs and Xenon-HID modules. Those N-channel
MOSFETs with 15 m Ω R DS(ON) are self-protected 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 motors or solenoid 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
In Normal mode, each bulb is controlled directly from the
MCU through SPI. A pulse width modulation control module
allows improvement of lamp lifetime with bulb power
regulation (PWM frequency range from 100 to 400 Hz) 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.
In Fail-safe mode, each lamp is controlled with dedicated
parallel input pins. The device is configured in default mode.
15XS3400
Analog Integrated Circuit Device Data
Freescale Semiconductor
25
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