MFS5600AMBA0ES datasheet(47/111 Pages) NXP

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NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

17.6 PGOOD1/2 programmable reactions for ASIL B and Enhanced ASIL B

versions

While PGOOD1 and PGOOD2 are limited to providing the status of SW1 and SW2 in the

QM version of FS5600, PGOOD1 and PGOOD2 reactions are fully programmable for the

ASIL B and Enhanced ASIL B versions.

PGOOD1 and PGOOD2 have identical functions and options available via OTP. They

may be configured differently using OTP to provide varied functions at the system level.

For simplicity, PGOODx is used in place of PGOOD1 and PGOOD2.

Function

Option

When OTP_SW1_OV_PGOODx = 1

an over-voltage event on SW1 causes

PGOODx to be asserted.

When OTP_SW1_UV_PGOODx = 1

an under-voltage event on SW1 causes

PGOODx to be asserted.

When OTP_SW2_OV_PGOODx = 1

an over-voltage event on SW2 causes

PGOODx to be asserted.

When OTP_SW2_UV_PGOODx = 1

an under-voltage event on SW2 causes

PGOODx to be asserted.

When OTP_VMON1_OV_PGOODx = 1

an over-voltage event on VMON1 causes

PGOODx to be asserted.

When OTP_VMON1_UV_PGOODx = 1

an under-voltage event on VMON1 causes

PGOODx to be asserted.

When OTP_VMON2_OV_PGOODx = 1

an over-voltage event on VMON2 causes

PGOODx to be asserted.

When OTP_VMON2_UV_PGOODx = 1

an under-voltage event on VMON2 causes

PGOODx to be asserted.

When OTP_VMON3_OV_PGOODx = 1

an over-voltage event on VMON3 causes

PGOODx to be asserted.

When OTP_VMON3_UV_PGOODx = 1

an under-voltage event on VMON3 causes

PGOODx to be asserted.

When OTP_VMON4_OV_PGOODx = 1

an over-voltage event on VMON4 causes

PGOODx to be asserted.

When OTP_VMON4_UV_PGOODx = 1

an under-voltage event on VMON4 causes

PGOODx to be asserted

When OTP_FCCU_ERR_PGOODx = 1

an FCCU error (FCCU1, FCCU2, or FCCU12)

causes PGOODx to be pulsed low for 8 ms.

Table 45. PGOOD1/2 programmable reactions

When any of the OTP bits listed above is set to 0, a corresponding fault on the regulator/

monitor has no impact on the PGOODx pin.

The delay for conditions to be satisfied and PGOODx being released is programmable

using the OTP_PGOODx_DELAY[2:0] bits. See Table 31 for details.

After PGOODx is de-asserted and there is an OV or UV fault, the fault is de-bounced and

PGOODx is asserted.

FS5600

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

Product data sheet

Rev. 3 — 2 August 2022

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