LYT4216E Power Integrations, LYT4216E Datasheet - Page 2

• Manufacturer Part Number: LYT4216E
• Description: LED Lighting Drivers HighPower LED Driver 35W
• Manufacturer: Power Integrations

Specifications of LYT4216E

• Rohs: yes
• Input Voltage: 85 V to 132 V
• Operating Frequency: 124 kHz to 140 kHz
• Maximum Supply Current: 1.2 mA
• Output Current: 2.83 A
• Maximum Operating Temperature: + 150 C
• Mounting Style: Through Hole
• Package / Case: eSIP-7C
• Minimum Operating Temperature: - 40 C

Figure 3a. Typical Isolated Flyback Schematic.
Figure 3b. Typical Buck Schematic.
Figure 3c. Typical Tapped Buck Schematic.
Figure 3d. Typical Buck-Boost Schematic.
Rev. B 02/13
LYT4211-4218/4311-4318
2
Table 2.
Isolated Flyback
Buck
Tapped Buck
Buck-Boost
Topology
AC
IN
AC
IN
AC
IN
Performance of Different Topologies in a Typical Non-Dimmable 10 W Low-Line Design.
Typical Circuit Schematic
Isolation
D
S
CONTROL
D
S
CONTROL
LYTSwitch
Yes
No
No
No
R
V
CONTROL
FB
R
D
S
V
BP
FB
CONTROL
LYTSwitch
R
BP
V
FB
LYTSwitch
BP
Efficiency
PI-6841-081512
PI-6859-081512
PI-6842-081512
89%
90%
88%
92%
Middle
Cost
High
Low
Low
Benefits
•
•
•
Limitations
•
•
•
Benefits
•
•
•
•
•
Limitations
•
Benefits
•
•
•
•
Limitations
•
•
•
Benefits
•
•
•
•
•
Limitations
•
•
•
•
•
•
•
•
Provides isolated output
Supports widest range of output voltages
Very good THD performance
Flyback transformer
Requires additional components (primary clamp and bias)
Higher RMS switch and winding currents increases losses
and lowers efficiency
Highest efficiency
Lowest component count – small size
Simple low-cost power inductor
Low drain source voltage stress
Best EMI/lowest component count for filter
Single input line voltage range
Ideal for low output voltage designs (<20 V)
High efficiency
Low component count
Simple low-cost tapped inductor
Designs best suited for single input line voltage
Requires additional components (primary clamp)
Non-isolated
Ideal for non-isolated high output voltage designs
High efficiency
Low component count
Simple common low-cost power inductor can be used
Lowest THD
Maximum V
Single input line voltage range
Non-isolated
Overall efficiency reduced by parasitic capacitance
and inductance in the transformer
Larger PCB area to meet isolation requirements
Output voltage <0.6 × V
Output voltage for low THD designs
Non-isolated
Good
THD
Best
Best
Best
OUT
is limited by MOSFET breakdown voltage
Key Features
Tapped Buck
Buck-Boost
Flyback
Buck
Output Voltage
IN(AC)
High-Voltage
Limited
× 1.41
Any
Any
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