Datasheet

Pin settings L6585DE
4/33
1 Pin settings
1.1 Connection
Figure 2. Pin connection (top view)
1.2 Functions
Table 1. Pin functions
Pin n. Name Function
1OSC
An external capacitor to ground fixes the half-bridge switching frequency with a
± 3 % precision.
2RF
Voltage reference capable of sourcing up to 240 µA. The current sunk from this
pin fixes the switching frequency of the half-bridge for each operating state.
A resistor (
R
RUN
) connected to ground sets the half-bridge operating frequency
combined with the capacitor connected to the pin OSC.
A resistor connected to EOI (R
PRE
) sets the maximum half-bridge switching
frequency during preheating combined with R
RUN
and C
OSC
.
3EOI
Connected to ground by a capacitor that, combined with R
PRE
, determines the
ignition time.
Preheating
: low impedance to set high switching frequency
Ignition and run mode
: high impedance with controlled current sink in case of
HBCS threshold triggering.