80310 datasheet(15/31 Pages) FREESCALE

15 / 31 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

80310

FUNCTIONAL DEVICE OPERATION

STATE MACHINE

LRC mode is active until the detection of phase stop

regulating RPM (fSTOP). In this case, the device goes back to

the pre-excitation mode. If the phase frequency reaches the

LRC disable RPM default (fLRC), the device goes into

regulation without LRC.

REGULATION WITHOUT LRC:

This mode is active when the phase frequency is above

the LRC disable RPM default (fLRC), the first VREG was

reached with LRC.

The excitation is controlled only by the internal comparator

of B+A and VREG. The DC can not be lower than DCMIN.

If the phase frequency goes below the LRC disable RPM

default (fLRC), then the 80310 comes back to the regulation

with LRC mode. If the phase frequency goes below the phase

stop regulating RPM, the device goes to pre-excitation mode.

RE-REGULATION:

The excitation is forced to 100%. This mode is active if

there is no high phase on non active phase (PHx < VPH) in

the previous cycle, until the high phase comes back. At the

end of the 8th cycle, if there is still no high phase, the

regulation mode is set off and the device goes back to the

regulation mode with or without LRC.

B+A is lower than VREG. In any case, DC cannot be lower

than DCMIN.

Ph ase < LR C

R EGUL ATION w LRC

PR E-EXC

No High Ph ase1 in th e

pr ev io us cycle an d P hase

Regu lation is ON

Ph ase

REG ULAT ION

(High Phase1 appears) o r

(1 00% DC du rin g 8 cycles = > Phase

Regu lation set OF F)

REG ULAT ION w/o LRC

No Hig h Ph ase1 in th e

pr eviou s cycle an d Ph ase

Regu lation is ON

P hase

REGU LATION

(High P hase1 ap pear s) or

(10 0% DC d uring 8 cycles =>

Phase Regulation set OFF)

P hase > Start

Phase < Sto p

Phase > LRC

an d first Vreg reached

with LR C

Ph ase < Stop

POR

L IN Tim eo ut with no Ph ase

L IN M ID3 C if n vm _ lin _special

Wake-u p on

Pha se

S tandby

Ed ge on Phase

. Restart tim er 10 0m s

EX C 100% DC

Ph ase > Star t_ aa

. R estart timer 1 00 ms

Hig h Ph ase1

ap pears

Time out 100 m s

Tim e ou t 100 m s

LIN C om m and with V reg <> 1 0.6 V:

MID 29 if n vm _ALT1

MID 2A if nv m _ALT 2

MID 2B if nvm _lin_special

Figure 10. Self-start State Machine

This state machine runs only if self-start option has been

programmed.

STANDBY:

The 80310 is in Standby mode if there is a LIN timeout,

and in absence of alternator rotation (no phase), if power and

reset (POR), or with a LIN MID3C command, if

nvm_lin_special is set.

• There is no excitation

• The duty cycle (DC) is equal to zero

The device needs a small amount of quiescent current to

feed some functions such as oscillator.

LIN timeout means:

• No activity on the LIN bus during a specified time

• or on a LIN watchdog timeout during a specified time

WAKE-UP:

This state is reached when an edge is detected on the

phase (Phase voltage > Phase sensitivity)

• The logic is out of reset

80310 数据表(PDF) 15 Page - Freescale Semiconductor, Inc

80310 数据表(HTML) 15 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