ATAVRFBKIT Atmel, ATAVRFBKIT Datasheet - Page 22

• Manufacturer Part Number: ATAVRFBKIT
• Description: KIT DEMO BALLAST FOR AT90PWM2
• Manufacturer: Atmel
• Series: AVR®r

Specifications of ATAVRFBKIT

• Main Purpose: Lighting, Ballast Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AT90PWM2, AT90PWM3
• Primary Attributes: 18 W, Up to 2 Type T8 Lamps, Dimmable, Auto Detect of Swiss or DALI
• Secondary Attributes: Power Factor Corrected (PFC), 90 to 265 VAC, 90 to 370 VDC
• Data Bus Width: 8 bit
• Core Chip: AT90PWM2B
• Topology: Boost
• No. Of Outputs: 1
• Dimming Control Type: Digital
• Kit Contents: Board CD Docs
• Development Tool Type: Hardware / Software - Eval/Demo Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ATAVRFBKIT / EVLB001 User Guide
PFC_DELAY_FOR_NEXT_SOFT_START
PFC_PROBLEM
SHUT_DOWN_PFC_AND_SLOW_DOWN_UC_SPEED
HAVERSINE_CHECK
PFC haversine peak must be between HAVERSINE_PEAK_MIN and HAVERSINE_
PEAK_MAX (90VAC and 265VAC).
If the haversine value is OK, set the max pulse width allowed and jump to the CON-
FIGURE_PFC_SOFT_START state.
Else go back to INIT_PFC_HAVERSINE_CHECK state.
CONFIGURE_PFC_SOFT_START
Configures the peripherals PSC0 and comparator0 to soft start the PFC.
SPEED_UP_MICROCONTROLLER
CONFIGURE_PFC_SOFT_START
INIT_PFC_HAVERSINE_CHECK
HAVERSINE_MEASURE
PFC_CONTROL_LOOP
HAVERSINE_CHECK
PFC_SOFT_START
PFC_FIND_ZCD
PFC_OFF
INIT_PFC
gv_lamp_preset_current != 0 during control_task in control_FBKIT.c
g_pfc_time_since_previous_timer_reset <=
HAVERSINE_PEAK_MIN <= gs_v_haversine_peak <=
(0.95 * gs_v_haversine_peak) <= gv_v_bus <= V_BUS_SET_POINT
gs_pfc_soft_start_tries <= PFC_START_MAX_TRIES
Get_v_bus() <= V_BUS_OVERSHOOT
gvs_zcd_occures
gvs_zcd_occures == 1
gv_lamp_preset_current == 0 during control_task in control_FBKIT.c
ATPWMX Demonstrator Software
HAVERSINE_MIN_CHECK_TIME
HAVERSINE_PEAK_MAX
7597B–AVR–10/07
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