FS6500 datasheet(53/153 Pages) NXP

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NXP Semiconductors

FS6500-FS4500-ASILD

Safety power system basis chip with CAN FD and LIN transceivers

12.6 Input voltage range

Due to the flexibility of the pre-regulator, the device can cover a wide battery input voltage range. However, a

more standard voltage range can still be covered using only the buck configuration.

aaa-037761

No operation

Risk of damage

No operation

Risk of damage

Extended voltage range

Potencial VPRE

thermal limitation

Extended voltage range

Potencial VPRE

thermal limitation

Extended voltage range

VPRE output

current limitation

Extended voltage range

VPRE output

current limitation

No operation

Buck-boost

2.7 V

6.0 V

19 V

28 V

40 V

4.5 V

Buck only

No operation

Extended voltage range

AMUX limitation

Extended voltage range

AMUX limitation

Normal voltage range

VSUP

VSUP_UV_7

Figure 32. Input voltage range

• VSUP > 28 V: Potential VPRE thermal limitation

RDS(on), Current limitation and overcurrent detection are specified for VSUP < 28 V.

• VSUP > 19 V: MUX_OUT limitation

VSENSE and IO_0 maximum analog input voltage range is 19 V. Internal 2.5 V reference voltage accuracy

degraded.

• Buck only, VSUP < VSUP_UV_7:

CAN communication is guaranteed for VSUP > 6.0 V. LIN communication stopped when VSUP < 7.0 V if

LIN_J2602_DIS bit is not set. For VCCA and VAUX 5.0 V configuration, undervoltage triggers at low VSUP (See

Section 9, VCCA_UV_5 and VAUX_UV_5).

12.7 Power management operation

A thermal sensor is implemented as close as possible to the pass transistor of each regulator (VPRE, VCORE,

VCCA, VCAN) and an associated individual thermal shutdown (TSD) protects these regulators independently.

When the TSD threshold of a specific regulator is reached, this regulator only is switched off and the information

FS6500-FS4500-ASILD

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 8 — 5 August 2024

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