2/8/2024 9:15:41 AM
Summary: Includes CAN/LIN transceivers, as well as system and safety functions for emerging automotive ECUs.
NXP Semiconductors FS23 Safety System Base (SBC) pmics are pin-for-pin/software compatible and include CAN/LIN transceivers, as well as many system and safety functions for emerging automotive electronic control units (ECUs). The FS23 SBC is scalable from a linear regulator version to a DC-DC regulator version and from QM to ASIL b. These devices provide a high level of integration to optimize bill of materials (BOM) costs for the body and comfort markets.
The highly flexible pmic is suitable for S32K processor-based applications and multi-vendor processors. Multiple device versions are available, providing output voltage settings, operating frequency, power-up sequence and input/output configurations to address a variety of applications.
Power management
HVBUCK: Synchronous buck converter with integrated field effect transistor. Normal mode output voltage and LPON mode output voltage (3.3V or 5.5V) can be configured. The output DC current is 400mA in normal mode and 100mA in low-power ON mode.
HVLDO1: High voltage LDO for MCU power supply instead of HVBUCK, with selectable output voltage (3.3V or 5.5V), up to 100mA DC current capability with internal PMOS and external PNP
HVLDO2: High-voltage LDO regulator for system loads with optional external protection of off-board sensors, selectable output voltage (3.3V or 5.0V), and up to 100mA DC current capability
HVLDO3: High voltage LDO regulator for CAN FD block power or other selectable output voltages (3.3V or 5.0V) and up to 150mA current
System functions
1x CAN FD supports communication up to 2Mbps and complies with ISO 11898-2:2016 and SAE J2284 standards
1x LIN complies with lin2.2, ISO 17987-4 and SAE-J2602-2 standards
2 wake-up inputs (support 40V)
2 high-voltage I/Os with wake-up function (can support 40V)
Up to 4 low-voltage I/Os with wake-up capability
4 configurable high-side drivers with 150mA drive capability to provide LEDs or enable external devices (INH), and loop detection capabilities
Multiple wake-up sources: WAKE pin, HVIO pin, LVIO pin, CAN FD, LIN or dedicated SPI/I(2)C command
Device control via 32-bit SPI interface or via I(2)C interface with CRC
Integrated long-term timer (LDT) for system shutdown and wake-up control, programmable for up to 194 days
16-channel analog multiplexer (AMUX) for system monitoring (temperature, battery voltage and internal voltage)
operating mode
Normal mode, all power management and functional safety features are available
Stop Mode: Low Power Off Mode (LPOFF) with multiple wake-up sources
Standby mode: low-power ON mode, HVBUCK or HVLDO1 activity and multiple wake-up sources (lon)
Functional safety
Developed according to ISO 26262:2018 standard and suitable for ASIL B applications
Internal monitoring circuitry with own reference
Additional input for external voltage monitoring
Window or timeout watchdog function to monitor MCU faults through software
ccu input monitors MCU faults via hardware
Simulate built-in self-test (ABIST) requirements
Safety outputs (RSTB, FS0B, LIMP0 and LIMP1/2 1.25Hz or 100Hz PWM capability)
Configure and enable
QFN48EP: QFN48 pins, exposed pad, optimized thermal management, wettable flanks, 7mm x 7mm x 0.85mm, 0.5mm pitch, 48 pins
One-time programmable (OTP) memory for scalability, expandability and device customization
OTP simulation mode for system development and evaluation
-40℃~ +125℃ operating temperature range
body control module
HVAC
illumination
Steering column lock
Seat module
roof module
door control module
car access
gear shift
seat belt pretension
back door
alarm
Phone