MFS5600AMBAFES datasheet(21/118 Pages) NXP

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NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

OTP_SW1_SLOPECOMP[1:0]

Slope compensation (mV/µs)

67.5

112.5

Table 15. OTP_SW1_SLOPECOMP[1:0] Value

OTP_SW1_GM_COMP[1:0]

Transconductance (µS)

Table 16. OTP_SW1_GM_COMP[1:0] Value

OTP_SW1_PWM_R_COMP[2:0]

Compensation resistor (kΩ)

000

150

001

300

010

450

011

600

100

750

101

900

110

1050

111

1200

Table 17. OTP_SW1_PWM_R_COMP[2:0] Value

11.3.7 SW1 fault monitoring

The SW1FB pin voltage is compared against an internal reference to detect undervoltage and overvoltage faults

in SW1. See Table 8 for monitoring thresholds.

When OTP_SW1_OV_PGOOD1 = 1, an overvoltage fault on SW1 asserts PGOOD1. Similarly, when

OTP_SW1_OV_PGOOD2 = 1, an overvoltage fault on SW1 asserts PGOOD2.

When OTP_SW1_UV_PGOOD1 = 1, an undervoltage fault on SW1 asserts PGOOD1. Similarly, when

OTP_SW1_UV_PGOOD2 = 1, an undervoltage fault on SW1 asserts PGOOD2.

The SW1_UV_I and SW1_OV_I bits are latched to 1 respectively if undervoltage and overvoltage faults are

detected. The latch bits can be cleared by writing a 1 to them.

SW1_UV_RT and SW1_OV_RT read-only bits indicate the real-time status of the faults.

FS5600

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

Product data sheet

Rev. 4 — 29 April 2024

21 / 118

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