ICL5101_16 Datasheet, PDF (9/44 Pages) Infineon Technologies AG – Resonant controller IC with PFC for LED driver

Symbol
Pin
HSGND
14
HSVCC
15
HSGD
16
ICL5101
Pin Configuration and Description
Function
High-side GND
This pin is connected to the source terminal of the high-side MOSFET, which
is also the node of high-side and low-side MOSFET. This pin represents the
floating ground level of the high-side driver and the high-side supply.
High-side supply voltage
This pin provides the power supply of the high-side ground-related section of
the IC. An external capacitor between pins 14 and 15 acts like a floating
battery, which has to be recharged cycle by cycle via a high-voltage diode
from the low-side supply voltage during the on-time of the low-side MOSFET.
A UVLO threshold with hysteresis enables the high-side section at 10.4 V
and disables it at 8.6 V.
High-side gate drive
The gate of the high-side MOSFET in an RESONANT inverter topology is
controlled by this pin. There is an active L-level during UVLO and a limitation
of the max H-level at 11.0 V during normal operation. The switching
characteristics are the same as described for LSGD (pin 1). It is
recommended to use a resistor of about 10 Ω between the drive pin and gate
in order to avoid oscillations and in order to shift the power dissipation when
discharging the gate capacitance into this resistor. The dead time between
the LSGD signal and HSGD signal is self-adapting between 500 ns and
1.0 µs (typically).
Datasheet
9
Rev. 1.3, 2016-01-15