80310 datasheet(9/31 Pages) FREESCALE

9 / 31 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

80310

FUNCTIONAL DESCRIPTION

INTRODUCTION

FUNCTIONAL DESCRIPTION

INTRODUCTION

The 80310 is an integrated circuit intended to regulate the

output voltage of an automotive alternator.

The IC supplies a current via a high side MOSFET to the

excitation coil of the alternator and provides an internal

freewheeling diode. It keeps the battery at its nominal charge

and delivers current to electrical devices within the vehicle.

The 80310 also provides a load response control

mechanism (LRC), and has an interface for the industry

standard LIN protocol (v1.3) to allow an ECU (master) to

control the regulated voltage and the LRC rate among other

parameters.

The ECU also can read back information about the status

of the regulator and the alternator via LIN.

The programmable parameters by the ECU:

• Regulated voltage

• LRC ramp time, LRC cut off

• Excitation current limitation

The information sent back to the ECU:

• Die temperature

• Excitation current

• EXC duty cycle (DF)

• Manufacturer and class

• Faults:

•Electrical, mechanical, temperature

•LIN time out

•LIN communication error: watchdog, check sum, Id

parity, sync break

The IC can be programmed as an OTP device (One Time

Programmable) to fit a large number of alternators and

applications. These programmable parameters are described

in the functional device operation (Table 6). This circuit is

specially designed to operate in harsh automotive

environment.

FUNCTIONAL PIN DESCRIPTION

PHASE (PH1 AND PH2)

These pins connect to stator windings. These signals are

used for the rotor speed measurement, stator voltage

measurement as well as the self start detection.

9 3+

9 3+/

93+ !93+

$1'

93+ 93+/

&RQGLWLRQ LV WUXH

Figure 6. Internal Signals in Normal Mode

In this situation the regulator stays in Normal mode. (P1

and P2 represent internal signals coming from the phase

processor block, which are routed to the logic block).

LIN BUS (BUS)

This LIN pin represents the single-wire bus transmitter and

receiver. It is suited for automotive bus systems and is based

on the LIN bus specification v1.3.

GROUND PINS (PGND, SGND)

The 80310 has two different types of ground pins. The

PGND pin is the power ground pin for the device. The SGND

is the signal ground pin.

Important: The PGND, the SGND pins must be connected

together to a ground external to the device.

SUPPLY VOLTAGE (B+A)

The 80310 is supplied by this B+A pin. This voltage is also

used as the feedback voltage by the control circuit.

EXCITATION (EXC)

This pin is connected to the excitation coil (rotor) of the

alternator. The IC supplies a current via a high side MOSFET

to the excitation winding to create a magnetic filed in the

rotor. This generates sinusoidal currents in the stator which

are rectified by a diode bridge.

80310 数据表(PDF) 9 Page - Freescale Semiconductor, Inc

80310 数据表(HTML) 9 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

数据表下载