AR6000 datasheet(90/103 Pages) NXP

90 / 103 page

NXP Semiconductors

AR6000

Alternator regulator with LIN

AR6000

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Data sheet: advance information

Rev. 5.1 — 12 October 2017

90 / 103

Table 60. Battery voltage microcuts

Data

Description

Min.

Typ.

Max.

Unit

Minimum time between two undervoltage events

250

—

1000

µs

tMIN_UNDER_V

Minimal undervoltage time the regulator must withstand

whatever the T°C

—

µs

VB+A_THRESHOLD B+A undervoltage threshold

—

5.0

If timing between two such undervoltage events is shorter than 250 µs, logic registers

may reset, resulting in loss of register content.

Below 5.0 V, most analog blocks are disabled (main logic clock, regulation loop,

excitation driver, LIN transceiver). Main logic is supplied as long as battery voltage is

higher than 3.0 V.

20 Behavior without battery

In case of a battery disconnection from the alternator output, the regulator maintains the

alternator voltage within the range of VREAL ± 0.5 V.

Table 61. Behavior without battery

Data

Description

Min.

Typ.

Max.

Unit

DC_VWITHOUT_BATT Additional tolerance in case of operation without battery

V_Real

– 0.5

V_real

+ 0.5

21 Thermal compensation

This function is activated when the internal temperature is above the thermal threshold

(selectable by a fuse, from 125 °C to160 °C). In this case, the voltage set point is fixed

by LIN or by default is decreased to reduce internal temperature. The derating is also

selectable by a fuse (from –50 mV/°C to –400 mV/°C).

Figure 15. Thermal compensation

22 Protection and diagnosis features

22.1 Fault detection

General Notes

All fault reporting passes through a digital filter to avoid false indication problems, this

deglitching time is selectable by fuse from 50 to 1000 ms.

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