L6585DETR STMicroelectronics, L6585DETR Datasheet - Page 19

IC PFC/BALLAST CONTROL 20-SOIC

L6585DETR

Manufacturer Part Number
L6585DETR
Description
IC PFC/BALLAST CONTROL 20-SOIC
Manufacturer
STMicroelectronics
Type
PFC/Ballast Controllerr
Datasheet

Specifications of L6585DETR

Frequency
58.4 ~ 62 kHz
Current - Supply
7mA
Current - Output
600mA
Voltage - Supply
11 V ~ 16 V
Operating Temperature
-40°C ~ 150°C
Package / Case
20-SOIC (7.5mm Width)
Switching Frequency
250 KHz
Maximum Power Dissipation
830 mW
Maximum Operating Temperature
+ 150 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-8822-2

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L6585DE
3.
Figure 8.
4.
Figure 9.
edge blanking is active during this time in order to avoid any detection of hard switching
events, very common during this phase.
Ignition: At the end of the TCH cycle, the EOI pin is left free in high impedance mode.
Therefore, the capacitor connected between EOI and ground is charged by RF through
R
along with it. An exponential decrease in switching frequency causes a linear increase
of the lamp voltage. When the lamp voltage reaches the strike value, the lamp ignites.
Ignition time is set by the value of
During ignition current control protection, anti-ballast choke saturation protection and
leading edge blanking are all active.
Run mode: When the EOI voltage reaches 1.9 V, the IC enters run mode and the
switching frequency is set only by R
choke saturation are now active with a lower threshold, leading edge blanking is not
active and a fast hard switching detector is activated.
PRE
. The current sunk from the RF pin decreases exponentially, and the frequency
Half-bridge protection thresholds during ignition
Half-bridge protection thresholds during run mode
R
PRE
RUN
and C
. Current control protection and anti-ballast
IGN
.
Ballast section
19/33

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