Datasheet FL5150 (ON Semiconductor) - 2

FL5150/60
IGBT and MOSFET AC Phase Cut Dimmer Controller
Features
 Selectable Earth Ground or Line-Hot Zero Cross
Detection: Complies with UL1472 2015 2nd Edition
for Addition of Ground Leakage Current for Flicker
Reduction (North America)  User Programmable Leading or Trailing Edge
Dimming Control 



 Dynamic Over-Current and Temperature Protection  8 Bit ADC Input for Dimming Control with an
Adjustable Resistor or 0 to 10 V DC Voltage  226 Dimming Pulse Widths with 25 s Resolution
and Built-in Ramp Up/Down Control for Smooth
Dimming  Automatically Maximum Gate Pulse Width Control
(Auto Max.) 

 Minimum External Components 

 Low Power Electronic Off State Mode Powered from the AC Line
Symmetric AC Current Control
IGBT or MOSFET Gate Driver
Gate Pulse Width Programmable from 0 to 100%
tON 600 A Quiescent Current
Precision Temperature Compensated 2% Internal
Timer Space Savings SOIC 10-pin Package
50 Hz and 60 Hz Options Applications

 Dimmer Switches
AC Controls © 2016 Fairchild Semiconductor Corporation
FL5150/60 • 1.0 Description
The FL5150 and FL5160 are controllers for varying the
pulse width for AC loads. The FL5150 is for 50 Hz and
the FL5160 is for 60 Hz applications. The FL5150/60 is
powered from the AC line and generates a programmable
gate drive for controlling the pulse width for external IGBT
or MOSFET transistors. The pulse width can be user
programmable with either an external resistor or 0 to 10 V
DC signal or controlled by a µP with a logic signal. The
pulse width can be controlled from 0 to 100% duty cycle
to provide a wide AC symmetric dimming control function
when biased with a 3-wire application. For 2-wire LineHot and Load-Hot applications, the pulse width can
typically be varied from 0 to a maximum gate pulse so
that the load voltage is >95% of the AC line voltage. The
FL5150/60 will automatically override the pulse width
control setting to allow maximum gate pulse width without
flicker.
The FL5150/60 takes advantage of the UL1472 2015 2nd
edition code revision that allows for up to 0.5 mA of
ground leakage current when a neutral wire is not
available in the switch box. This improves the flicker
performance for non-resistive loads. If the application
does not allow ground leakage current then the Line Hot
signal can be used as the ZC signal.
The FL5150/60 has user programmable over-current
and temperature protection. With external sense
resistors, the maximum voltage drop across Q1 and Q2
can be set to limit the maximum current and transistor
power dissipation.
The FL5150/60 can be programmed for trailing edge
dimming when the DIM Mode pin is low at startup (pulse
width starts at the zero-crossing) or leading edge
dimming when the DIM Mode pin is connected to the
VDD pin at startup (pulse width ends at the zero
crossing). When an OFF state is selected (DIM Control
pin is 0 V) the FL5150/60 will go into a low power
electronic OFF state that reduces the power consumption
to less than 100 mW if an external NPN transistor is used.
The FL5150/60 has an internal 8 bit ADC that allows for
typically 226 selectable dimming pulse widths with a
resolution of 25 µs per step. The FL5150/60 controls the
dim pulse width rate of change so that the minimum to
maximum dim ramp time is approximately 1 second.
This feature allows for a smooth dim transition.
Internally, the FL5150/60 contains a 17 V shunt regulator,
5 V linear regulator, 8Bit ADC, detection comparators,
control logic and an IGBT or MOSFET gate driver.
The 10-pin SOIC package provides for a low-cost,
compact design and layout.
www.fairchildsemi.com FL5150/60 — IGBT and MOSFET AC Phase Cut Dimmer Controller May 2016