InnoSwitch3-EP Family
Off-Line CV/CC QR Flyback Switcher IC with Integrated
725 V MOSFET, Synchronous Rectification and FluxLink Feedback.
For Applications up to 45 W
Product Highlights
Highly Integrated, Compact Footprint
• Up to 94% efficiency across full load range
• Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback
controller, 725 V MOSFET, secondary-side sensing and synchronous
rectification driver
SR Fꢆꢇ
• Excellent multi-output cross regulation with weighted secondary-side
regulation (SSR) feedback and synch FETs
• Integrated FluxLink™, HIPOT-isolated, feedback link
• Exceptional CV/CC accuracy, independent of external components
D
V
InnoSwitch3-EP
Optional
Current
Sense
VOUT
• Adjustable accurate output current sense using external output sense
resistor
ꢀriꢈary Fꢆꢇ
and Controller
S
BPP
IS
Secondary
Control IC
EcoSmart™ – Energy Efficient
• Less than 15 mW no-load including line sense
• Easily meets all global energy efficiency regulations
• Low heat dissipation
ꢀI-ꢁꢂꢁ4-ꢃ5ꢃꢄꢂꢅ
Figure 1. Typical Application Schematic.
Advanced Protection / Safety Features
• Secondary MOSFET or diode short-circuit protection
• Open SR FET-gate detection
• Fast input line UV/OV protection
• Auto-restart fault response for output OVP
Optional Features
• Auto-restart output UV protection with option for peak power delivery
Full Safety and Regulatory Compliance
• Reinforced isolation
Figure 2. High Creepage, Safety-Compliant InSOP-24D Package.
• Isolation voltage >4000 VAC
• 100% production HIPOT testing
• UL1577 and TUV (EN60950) safety approved
• Excellent noise immunity enables designs that achieve class “A”
performance criteria for EN61000-4 suite; EN61000-4-2, 4-3
(30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m)
Output Power Table
230 VAC ± 15%
85-265 VAC
Product3
Peak or
Peak or
Open Frame1,2
Open Frame1,2
10 W
Green Package
• Halogen free and RoHS compliant
INN3672C
12 W
15 W
25 W
30 W
40 W
45 W
INN3673C
INN3674C
INN3675C
INN3676C
INN3677C
12 W
Applications
20 W
• Auxiliary, standby and bias power supplies for appliances, computers
and consumer products
25 W
• Utility meter, smart grid and industrial power supplies
36 W
Description
40 W
The InnoSwitch™3-EP family of ICs dramatically simplifies the design
and manufacture of flyback power converters, particularly those
requiring high efficiency and/or compact size. The InnoSwitch3-EP
family combines primary and secondary controllers and safety-rated
feedback into a single IC.
Table 1. Output Power Table.
Notes:
1. Minimum continuous power in a typical non-ventilated enclosed typical size
adapter measured at 40 °C ambient. Max output power is dependent on the
design. With condition that package temperature must be < 125 °C.
2. Minimum peak power capability.
InnoSwitch3-EP family devices incorporate multiple protection features
including line over and undervoltage protection, output overvoltage
and over-current limiting, and over-temperature shutdown. Devices are
available with standard and peak power delivery options, and
commonly used auto-restart protection behaviors.
3. Package: InSOP-24D.
www.power.com
August 2018
This Product is Covered by Patents and/or Pending Patent Applications.
POWERINT [ Power Integrations ]
