MFS5600AMBAFES datasheet(29/118 Pages) NXP

29 / 118 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

12.2.5 Soft-start

Startup of SW2 is internally controlled to eliminate overshoot and control the inrush current. Soft-start time is

programmable via OTP using the OTP_SW2_SS bit. See Table 18 for values.

12.2.6 Current limit protection

Cycle-by-cycle current limit is utilized to limit the total permissible output current. Output voltage returns to

regulation when the overcurrent is removed. Current limit value is programmable to 4 different values via OTP

using the OTP_SW2_ILIM[1:0] bits. See Table 18 for values.

12.2.7 Slope compensation

Slope compensation for the controller is set via OTP using the OTP_SW2_SLOPECOMP[5:0] bits. See

Section 12.2.1 "SW2 external component selection" for values to use based on operating conditions.

OTP_SW2_SLOPECOMP[5:0]

SW2 slope compensation (mV/µs)

000000

000001

000010

000011

000100

000101

000110

000111

001000

001001

001010

103

001011

113

001100

123

001101

134

001110

144

001111

154

010000

175

010001

195

010010

216

010011

237

010100

258

010101

279

010110

299

010111

320

011000

340

Table 26. OTP_SW2_SLOPECOMP[5:0] selection

FS5600

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Product data sheet

Rev. 4 — 29 April 2024

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