The NCP1395A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 1.0 MHz Voltage Controller Oscillator whose control mode brings flexibility when an ORing function is a necessity, e.g. in multiple feedback paths implementations. Protections featuring various reaction times, e.g. immediate shutdown or timer−based event, brown−out, broken optocoupler detection etc., contribute to a safer converter design, without engendering additional circuitry complexity. An adjustable deadtime also helps lowering the shoot−through current contribution as the switching frequency increases.Finally, an onboard operational transconductance amplifier allows for various configurations, including constant output current working mode or traditional voltage regulation.

Features• High Frequency Operation from 50 kHz up to 1.0 MHz
• Selectable Minimum Switching Frequency with 3% Accuracy
• Adjustable Deadtime from 150 ns to 1.0 s
• Startup Sequence via an Adjustable Soft−Start
• Brown−Out Protection for a Simpler PFC Association
• Latched Input for Severe Fault Conditions, e.g. Overtemperature
or OVP
• Timer−Based Input with Auto−Recovery Operation for Delayed
Event Reaction
• Enable Input for Immediate Event Reaction or Simple ON/OFF
Control
• Operational Transconductance Amplifier (OTA) for Multiple
Feedback Loops
• VCC Operation up to 20 V
• Low Startup Current of 300 A Max
• Common Collector Optocoupler Connection
• Internal Temperature Shutdown
• B Version Features 10 V VCC Startup Threshold for Auxiliary
Supply Usage
• Easy No−Load Operation and Low Standby Power Due to
Programmable Skip−Cycle
• These are Pb−Free Devices*

Typical Applications• LCD/Plasma TV Converters
• High Power Ac−DC Adapters for Notebooks
• Industrial and Medical Power Sources
• Offline Battery Chargers

Manufacturer	onsemi
Product Category	AC DC Converters, Offline Switchers
Series	-
Product	Current Mode Controllers
Type	PWM Current-Mode Controller
Packaging	Alternate Packaging
Unit-Weight	0.000705 oz
Mounting-Style	SMD/SMT
Operating-Temperature-Range	- 40 C to + 125 C
Package-Case	SOT-23-6 Thin, TSOT-23-6
Operating-Temperature	-40°C ~ 150°C (TJ)
Mounting-Type	Surface Mount
Supplier-Device-Package	6-TSOP
Watt	20W
Number-of-Outputs	1 Output
Output-Isolation	Isolated
Internal-Switch-s	No
Voltage-Breakdown	-
Topology	Flyback
Voltage-Start-Up	18V
Voltage-Supply-Vcc-Vdd	6.5 V ~ 28 V
Duty-Cycle	-
Frequency-Switching	-
Fault-Protection	Current Limiting, Over Voltage, Short Circuit
Control-Features	-
Isolation	Non-Isolated
Output-Power	20 W
Maximum Operating Temperature	+ 125 C
Output-Voltage	-
Operating-Supply-Current	2.5 uA
Output-Current	-
Switching-Frequency	80 kHz/110 kHz
Package-Case	TSOP-6
Duty-Cycle-Max	-
Input-Supply-Voltage-Min	6 V
Input-Supply-Voltage-Max	28 V