IXDN0036 datasheet(22/41 Pages) IXYS

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ATPWMx Demonstrator Software

ATAVRFBKIT / EVLD001 User Guide

6-23

7597A–AVR–02/06

I_LAMP_CONV

Get back the i_lamp result and depending on gv_lamp_on and gv_request_lamp_off,

start another I_LAMP_CONV conversion in order to increase the accuracy and resolu-

tio n o f the i_lamp me asurem ent then start ano th er cycle beg inn ing with a

V_HAVERSINE_CONV conversion.

If a lamp off (gv_request_lamp_off == 1) has been requested by the command control

task or a lamp fault mode on Lamp_ctrl.c file, the PSC2 and the amplifier0 are switched

off and the following variables are set at the following values:

•

gv_lamp_on = 0;

•

gv_lamp_state = LAMP_OFF;

•

gv_pfc_state =

SHUT_DOWN_PFC_AND_SLOW_DOWN_UC_SPEED;

Then a V_HAVERSINE CONV conversion is started.

6.1.2

ADC State Machine

Global Variables

6.1.2.1

Input variables

which have an

impact on ADC state

machine

• g_v_lamp_on is normally set only by the CONFIGURE_LAMP_PREHEAT state of

the Lamp state machine in the Lamp_ctrl.c file.

• gv_request_lamp_off can be set by the command control state machine in the case

the user requests to switch the lamp off.

6.1.2.2

Output variables

which can impact

the other state

machines

• g_v_lamp_on which can be cleared during the V_LAMP_CONV or I_LAMP_CONV

state in case the gv_request_lamp_off has been set by the command control state

machine.

• gv_lamp_state within the Lamp state machine in the Lamp_ctrl.c file can be set to

LAMP_OFF during the V_LAMP_CONV or I_LAMP_CONV state.

• gv_pfc_state within the PFC state machine in the Pfc_ctrl.c file can be set to

SHUT_DOWN_PFC_AND_SLOW_DOWN_UC_SPEED state during the

V_LAMP_CONV or I_LAMP_CONV state.

6.1.3

Miscellaneous

The gv_lamp_on checks during V_LAMP_CONV and I_LAMP_CONV states are nor-

mally useless because gv_lamp_on is reset only by the same states of the ADC state

machine.

6.1.4

COMMAND

CONTROL STATE

MACHINE

The Command Control state machine centralizes the 0-10V, SWISS, and DALI controls

in order to switch PFC operation On or Off and to set the lamp control instructions given

by the user.

The Command Control state machine functional diagram is shown below:

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