Robust, reliable
analog solutions
FS65 and FS45 Fail Silent Power System
Basis Chip Product Families
FS45 and FS65: Scalable, robust and highly reliable system basis chips ideal for
vehicle electrification trends.
TARGET APPLICATIONS
}
Electric vehicle, hybrid electric vehicle and battery
management systems
}
Safety-critical motor control
}
Drive train applications
}
ADAS
}
Functional safety integration
Importance of functional safety and system availability
}
System use in harsh environments needing functional
safety requirements
}
Q&A watch dog and FCCU monitoring for external
monitoring of microcontroller operation
}
Provides multiple diagnostics like overcurrent,
undervoltage and overtemperature for safe operation
}
Allows configurable safety behavior to manage
OVERVIEW
The standardization of critical power management and
safety behavior is driving innovation and a set of standard
system basic chip products. Industry trends are for green
powertrain, electrification and secured solutions that
integrate functional safety.
The FS45 and FS65 families combine power management
with its own monitoring in conjunction with the
microcontroller system’s monitoring. This arrangement
helps the system to achieve high-safety, integrity-level
performance. The need for a higher CAN bandwidth
improves intersystem communications and reduces software
download times.
The FS45 and FS65 families respond to several key
market requirements:
system goals
Electric drivetrain transportation systems
}
Allow voltage range from 2.7 V to 28 V -ideal for
automotive applications
}
Robust to harsh ePowertrain and EV/
HEV mission profile with grade 1 pass up
to 4200h HTOL (Ta=125°C/ Tj=150°C)
and grade 0 pass up to 1300h HTOL
(Ta=150°C/ Tj=175°C)
}
Integrated advanced system functions to
manage drive cycles such as Long Duration
Timer (LDT), Fail Safe Pin (FS1)
NXP SBC SOLUTIONS
FS45
6.5 V
2.0 A / 6.5 V V
PRE CAPABLE
PRE-REGULATOR
FS65
2.0 A/6.5 V V
PRE CAPABLE
2.7 to 28 V
BUCK/BOOST
2.7 V to 28 V buck/boost
V
CORE
LDO 0.5 A
Up to 400 mA
LDO and tracker
1
Configurable I/Os
Yes
Fail safe state machine
(RST, FS0, FS1)
LQFP48eP 7 x 7 mm
MCU core supply V
CORE/
2%
Auxillary ECU supply
Vaux/3%
CAN interface
I/Os
AMUX (battery, I/O, temp, V
REF
)
Fail safe
Package
2.4 MHz V
CORE
0.8/1.5/ 2.2 A DC-DC
Up to 400 mA
LDO and tracker
1
Configurable I/Os
Yes
Fail safe state machine
(RST, FS0, FS1)
LQFP48eP 7 x 7 mm
Applications that require thermal
efficiency and low PCB size
}
Efficient and robust DC-DC solutions
that supply the microcontroller from
1.2 V to 5 V, up to 2.2 A
}
Solution uses LQFP48eP,
a 7 x 7 mm package
Innovative and cost-effective
system solutions
FS4500 AND
BLOCK DIAGRAMS
FS4500 AND FS6500
FS6500 BLOCK DIAGRAMS
FS6500
V
PRE
DC/DC
6.5 V/2.0 A Buck
LV124 compliant
V
CORE
DC/DC
From 1.0 V up to 5.0 V
0.8/1.5/2.2 A versions
V
CCA
(100/300 mA)
5.0 V or 3.3 V LDO
V
AUX
- tracker (400 mA)
5.0 V or 3.3 V LDO
V
COM
(100 mA)
5.0 V LDO
V
PRE
DC/DC
6.5 V/2.0 A Buck
LV124 compliant
}
Compared to a similar solution in discrete,
the safety assessment required and the
external component needs, the FS45
and FS65 families offer a significant price
and size advantage
FS4500
V
CORE
LDO
From 1.0 V up to 5.0 V
< 0.5 A
V
CCA
(100/300 mA)
5.0 V or 3.3 V LDO
V
AUX
- tracker (400 mA)
5.0 V or 3.3 V LDO
V
COM
(100 mA)
5.0 V LDO
FEATURES AND BENEFITS
}
Availability: voltage operation
from 2.7 V up to 28 V
}
Buck pre-regulator with optional boost
to fit with LV124
}
Ultra-low-power modes (30 µA), -50%
versus competition
}
Independent fail-safe state machine
supporting highest functional safety
standards
}
Robust physical layers with superior
EMI/ESD performance
}
Efficient dual DC-DC supply, from
0.5 A up to 2.2 A
}
Fail silent configurable safety architecture
allowing independent monitoring of critical
parameters and system availability
}
System integration: analog multiplexer,
battery sensing, long duration timer and live
memory supply to reduce BOM
}
Scalable family approach through a large
range of part numbers supporting different
system configurations (including CAN
FD and CAN-less options), pin-to-pin
compatible
}
FS65 meets grade 0 reliability performance
levels: qualified with 1300 hours of HTOL
stress at Tj=175°C
Boost Driver
Battery Sense
Before RBP
Boost Driver
Battery Sense
Before RBP
AMUX (Battery, I/O, Temp, V
REF
)
Flexible (I/O)
WAKE/INH
Secured SPI
AMUX (Battery, I/O, Temp, V
REF
)
Flexible (I/O)
WAKE/INH
Secured SPI
Advanced Low Power Modes/VKAM
System Solutions (LDT, FS1)
Fail-safe State Machine (RST, FS0)
0 or 1 CAN HS w FD2M
0 or 1 LIN 2.x, J2602-2
SMPS regulators
LDO regulators
System features
Safety features
Physical layers
Advanced Low Power Modes/VKAM
System Solutions (LDT, FS1)
Fail-safe State Machine (RST, FS0)
0 or 1 CAN HS w FD2M
0 or 1 LIN 2.x, J2602-2
SMPS regulators
LDO regulators
System features
Safety features
Physical layers
SafeAssure PROGRAM
Functional safety. Simplified.
The NXP SafeAssure functional safety
program is designed to help you
simplify the process of achieving
system compliance with functional
safety standards in the automotive
and industrial markets.
A LEADER IN ANALOG SOLUTIONS
Expanding on more than 30 years of
innovation, NXP is a leading provider
of high-performance products that use
SMARTMOS technology, combining
digital, power and standard analog
functions. We supply analog and
power management ICs that are
advancing the automotive, consumer,
industrial and networking markets.
Analog solutions interface with real-
world signals to control and drive for
complete embedded systems.
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