STEVAL-ILB008V1 STMicroelectronics, STEVAL-ILB008V1 Datasheet - Page 5

• Manufacturer Part Number: STEVAL-ILB008V1
• Description: BOARD EVAL BALLAST FOR L6585DE
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of STEVAL-ILB008V1

• Main Purpose: Lighting, Ballast Control
• Embedded: No
• Utilized Ic / Part: L6585DE
• Primary Attributes: 4 x 18w, T8 Lamps
• Secondary Attributes: Preheating Ignition
• Input Voltage: 90 V to 265 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6585DE
• Other names: 497-10544

L6585DE
Table 1.
Pin n.
10
11
12
4
5
6
7
8
9
PFCCS
COMP
Name
EOLP
MULT
EOL
CTR
ZCD
Tch
INV
Pin functions (continued)
Pin for setting the preheating time and protection intervention.
Connect an RC parallel network (R
Preheating: the C
voltage reaches 4.63 V the generator is disabled and the capacitor discharges
because of R
ignition phase starts and the R
Ignition and Run mode: During proper behavior of the IC, this pin is low
impedance. During a fault (either over-current or EOL) the internal generator
charges the C
same capacitor. In this way, C
time).
Pin to program the EOL comparator.
It is possible to select both the EOL sensing method (fixed reference or
reference in tracking with CTR) and the window comparator amplitude by
connecting a resistor (R
Input for the window comparator.
It can be used to detect lamp ageing for either “lamp to ground” or “block
capacitor to ground” configurations.
This function is blanked during the ignition phase.
Input pin for:
- PFC over-voltage detection: the PFC driver is stopped until the voltage returns
in the proper operating range
- Feedback disconnection detection
- Reference for EOL comparator (in case tracking reference)
- The pin can be used also for shutdown
Multiplier external input. This pin is connected to the rectified mains voltage via a
voltage divider and provides the sinusoidal reference to the PFC current loop.
Output of the error amplifier. A compensation network is placed between this pin
and INV to achieve stability of the PFC voltage control loop and ensure high
power factor and low THD.
Inverting input of the error amplifier. Output voltage of the PFC pre-regulator is
fed to the pin through a voltage divider.
Boost inductor demagnetization sensing input for PFC transition-mode
operation. A negative-going edge triggers PFC MOSFET turn-on.
During startup or when the voltage is not high enough to arm the internal
comparator, the PFC driver is triggered by means of an internal starter.
Input to the PFC PWM comparator. The current flowing through the PFC
MOSFET is sensed through a resistor. The resulting voltage is applied to this pin
and compared with an internal sinusoidal-shaped reference, generated by the
multiplier, to determine the PFC MOSFET’ s turnoff.
A second comparison level detects abnormal currents (due to boost inductor
saturation, for example) and, on this occurrence, shuts down the PFC gate.
An internal LEB prevents undesired function triggering.
d
d
. Once the voltage drops below 1.5 V, the preheating finishes, the
to 4.63 V and then another current generator discharges the
d
is charged by an internal current generator. When the pin
EOLP
) to ground.
d
d
sets the fault timing (shorter than preheating
C
d
d
is pulled to ground.
Function
and C
d
) to ground.
Pin settings
5/33