mc35xs3500 Freescale Semiconductor, Inc, mc35xs3500 Datasheet - Page 18

• Manufacturer Part Number: mc35xs3500
• Description: Smart Rear Corner Light Switch Penta 35 M
• Manufacturer: Freescale Semiconductor, Inc

industrial lighting applications. Its five low R
(five 35 mΩ) can control the high sides of five separate
Supply Voltage (VBAT)
device. In addition to its supply function, this tab contributes
to the thermal behavior of the device by conducting the heat
from the switching MOSFETs to the printed circuit board.
Supply Voltage (VCC)
digital portion of the circuit and the gate driver of the external
SMART MOSFET.
Ground (GND)
Clock Input (CLOCK) and PWM Module
frequency and timing are generated from the rising edge of
clock input by the PWM module. The clock input frequency is
the selectable factor 2
frequency per output, depending PR bit value.
with a resolution of 7 bits of duty cycle (bits D[6:0]).
phases (0°, 90°, 180°, and 270°) to improve overall EMC
behavior of the light module.
the frequency is 4 times the original one. The two following
pictures illustrate the behavior.
18
35XS350
FUNCTIONAL DESCRIPTION
INTRODUCTION
The 35XS3500 is designed for low-voltage automotive and
The VBAT pin of the 35XS3500 is the power supply of the
This is an external voltage input pin used to supply the SPI
This pin is the ground of the device.
When the part is in Normal Mode (RST=1), the PWM
The OUT1:6 can be controlled in the range of 4% to 96%
The following table describes the PWM resolution.
The timing includes four programmable PWM switching
The amplitude of the input current is divided by four while
(Bit D7)
On/Off
0
1
1
1
1
Duty cycle (7 bits
Table 5. PWM Resolution
resolution)
0000000
0000001
0000010
1111111
7
X
= 128 or 2
PWM (1/128 duty cycle)
PWM (2/128 duty cycle)
PWM (3/128 duty cycle)
8
= 256 of the PWM
Output state
fully ON
OFF
DS(ON)
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
MOSFETs
INTRODUCTION
resistive loads (bulbs). Programming, control, and
diagnostics are accomplished using a 16-bit SPI interface.
different corner light IC is provided by a SPI command in
combination with the CS input. The bit in the SPI is called
PWM sync (initialization register).
provided in the following instances:
STOP and Flasher pins.
when VBAT and VCC are in operational voltage range.
Limp Home (LIMP)
by this digital input port. The signal is “high active”, meaning
The synchronization of the switching phases between
In Normal mode, No PWM feature (100% duty cycle) is
• with the following SPI configuration: D7:D0=FF.
• In case of clock input signal failure (out of f
In Fail mode. The outputs state depends on the IGN,
If RST=0, this pin reports the wake-up event for wake=1
The Limp Home mode of the component can be activated
outputs state depends on the D7 bit value (D7=1+ON)
in Normal mode.
Total
Total
Ch.1
Ch.2
Ch.3
Ch.4
Ch.1
Ch.2
Ch.3
Ch.4
0°
0°
Analog Integrated Circuit Device Data
90°
90°
180°
180°
Freescale Semiconductor
270°
270°
0°
0°
PWM
), the