InnoSwitch3-CP Family
Off-Line CV/CC QR Flyback Switcher IC with Integrated 650 V / 725 V MOSFET,
Synchronous Rectification, FluxLink Feedback and Constant Power Profile.
For Applications up to 65 W
Product Highlights
Highly Integrated, Compact Footprint
SR FET
• Up to 94% efficiency across full load range
• Quasi-Resonant (QR) / CCM flyback controller, 650 V or 725 V MOSFET4,
secondary-side sensing and synchronous rectification driver
• Integrated FluxLink™, HIPOT-isolated, feedback link
• Easily interfaces to load-directed and fast charge protocol ICs
• Constant Power (CP) Profile minimizes charging time with continuous
adjustment of output current and voltage
D
S
V
InnoSwitch3-CP
VOUT
ꢀriꢅary MOSFET
and Controller
BPP
IS
Secondary
Control IC
• Accurate CV/CC/CP, independent of external components
• External IS resistor allows custom CC programming
• Instantaneous transient response with 0%-100%-0% load step
ꢀI-ꢁꢂ22-0ꢃ05ꢄ7
Figure 1. Typical Application Schematic.
EcoSmart™ – Energy Efficient
• Less than 15 mW no-load including line sense
• Easily meets all global energy efficiency regulations
• Low heat dissipation
Advanced Protection / Safety Features
• Secondary MOSFET or diode short-circuit protection
• Open SR FET-gate detection
Figure 2. High Creepage, Safety-Compliant InSOP-24D Package.
• Fast input line UV/OV protection
Optional Features
• Cable-drop compensation with multiple settings
• Variable output voltage, constant current profiles
• Auto-restart or latching fault response for output OVP/UVP
• Multiple output UV fault thresholds
• Latching or hysteretic primary over-temperature protection
V
ꢀꢆ
Full Safety and Regulatory Compliance
• Reinforced isolation
• Isolation voltage >4000 VAC
• 100% production HIPOT testing
CC set by IS pin resistor ꢄR ꢅ
S
• 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 Current (A)
Figure 3. Typical Constant Power Characteristics.
Green Package
• Halogen free and RoHS compliant
Output Power Table
Applications
• High efficiency flyback designs up to 65 W
• USB PD / QC / proprietary protocol chargers
230 VAC ± 15%
85-265 VAC
Product3,4
Open
Adapter1
Frame2
Open
Adapter1
Frame2
20 W
25 W
36 W
40 W
45 W
55 W
Description
INN3264C/3274C
INN3265C/3275C
INN3266C/3276C
INN3277C
20 W
25 W
35 W
40 W
45 W
55 W
25 W
30 W
40 W
45 W
50 W
65 W
15 W
22 W
27 W
36 W
40 W
50 W
The InnoSwitch™3-CP family of ICs dramatically simplifies the design
and manufacture of flyback power converters, particularly those
requiring high efficiency and/or compact size. The InnoSwitch3-CP
family incorporates primary and secondary controllers and safety-rated
feedback into a single IC.
INN3267C
InnoSwitch3-CP family devices incorporate multiple protection features
including line over and under-voltage protection, output over-voltage
and over-current limiting, and over-temperature shutdown. Devices are
available that support the common combinations of latching and
auto-restart behaviors required by applications such as quick charge
and USB PD designs. The devices are available with and without
cable-drop compensation.
INN3268C
Table 1. Output Power Table.
Notes:
1. Minimum continuous power in a typical non-ventilated enclosed adapter
measured at 40 °C ambient. (package temperature <125 °C).
2. Minimum peak power capability.
3. Package: InSOP-24D.
4. 650 V MOSFET (INN326x); 725 V MOSFET (INN327x).
www.power.com
August 2018
This Product is Covered by Patents and/or Pending Patent Applications.