FS23 datasheet(36/230 Pages) NXP

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NXP Semiconductors

FS23

Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers

aaa-051445

No modulation

(0 %)

Same slope as triangle

∆f = 10 %

-10 %

Sequence:

0 %

2 pseudo random values

-10 %

2 pseudo random values

0 %

2 pseudo random values

-10 %

Pseudo random

value between 0 and -10 %

Figure 20. Pseudo-random triangular spread spectrum

13.1.3 Application schematic

aaa-051443

CBOOT_BUCK

C1_IN_BUCK

C1_OUT_BUCK

LV1_BUCK

V1_IN

V1 - HVBUCK

Figure 21. HVBUCK schematic with connection to V1_IN

13.1.4 Electrical characteristics

TA = –40 °C to 125 °C, unless otherwise specified. V1_IN = VBUCK_IN (min) to 36 V, unless otherwise specified. All voltages referenced to ground.

Symbol

Description

Min

Typ

Max

Unit

Static electrical characteristics

VBUCK_IN_STUP

Input-voltage range during startup and softstart time

4.6

VBUCK_IN

Input-voltage range (after start-up)

(VBUCK +

((Max(RLS_

BUCK) +

Max(RDCR_

LBUCK)) x

IBUCK))/

DCMAX_DROP

VBUCK_PWM

Output-voltage in Normal mode

(VV1_BUCK_OTP configuration, 3.3 V or 5 V)

3.3

5.0

VBUCK_PFM

Output-voltage in Low-Power ON mode

(VV1_LP_BUCK_OTP configuration, 3.3 V or 5 V)

3.3

5.0

VBUCK_ACCPWM

Output-voltage accuracy in PWM mode

-2

VBUCK_ACCPFM

Output-voltage accuracy in PFM mode

-4

IBUCK_PWM

Output current capability in PWM mode

400

IBUCK_PWM_450k

Output current capability in PWM mode at 450 kHz only, VBOS supplied by VSUP

600

Table 15. Electrical characteristics

FS23

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

Product data sheet

Rev. 7.0 — 16 October 2024

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