Customer Specific Device from ON Semiconductor
DDA002C
High Performance
Switch-Mode Power Supply
Controller for Backlight and
LLC Converters
The DDA002C controller hosts a high performance
circuitry dedicated to driving half−bridge topologies, such
as lamp ballasts for backlighting applications or resonant
converters like the LLC circuit. The controller includes
everything needed to build a reliable and rugged converter,
including a pre−heating period and various protections such
as an adjustable brown−out, for instance. Both, minimum
and maximum switching frequencies, are adjustable by
single pull down resistor, offering the ability to operate
between 30 kHz and 500 kHz.
The controller includes a high−voltage driver that
simplifies the design of the half−bridge configuration due to
direct connection to the upper−side MOSFET. To avoid
large shoot−through currents, the circuit includes a deadtime
generator whose duration can be easily adjusted externally.
Finally, two additional ground−referenced outputs allow the
implementation of full−bridge applications.
Features
• High−Frequency Operation from 30 kHz up to 500 kHz
• Selectable Minimum Switching Frequency
• Adjustable Deadtime from 100 ns to 2 ms
• 100 ms Delayed Startup for PFC Stage Stabilization
• Adjustable Preheating Timer via External Capacitor
• Startup Sequence via Adjustable Soft−Start
• 600 V High−Voltage Floating Drivers
• Synchronized Low−Current Outputs for Full Bridge
Applications
• Adjustable Maximum On−Time Clamp for
Synchronization Outputs
• Brown−Out Protection for Easier PFC Association
• Delayed Open−Loop Protection
• Latched Input for Severe Fault Conditions, e.g. Over
Current
• Secondary Latched Input for Over Temperature Protection
• Auto−Recovery Enable Input
• VCC Operation up to 20 V
• Low Startup Current of 300 mA
• 0.5 A / 0.25 A Peak Current Sink / Source Drive
Capability, Respectively
• Internal Temperature Shutdown
• SO19W package
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
Typical Applications
• Flat Panel Display Power Converters
• LLC Converters Control for LCD/Plasma TVs
• HCFL / CCFL Backlight Inverters
MARKING DIAGRAMS
SOIC−19, LESS PIN 17
D SUFFIX
CASE 752AA
DDA002C
AWLYYWWG
DDA002C = Specific Device Code
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb−Free Package
BO
CIG
Dgs
SS
R_Fmin
R_Fmax
FB
OTP_latch
DT
EN1
PIN CONNECTIONS
Boot
Hgd
HB
Vcc
DDA002C
Lgd
Gnd
Hgs
Lgs
EN2
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 26 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the ON
Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2009
1
July, 2009 − Rev. 0
Publication Order Number:
DDA002C/D