NCP1395: Controller, High Performance Resonant Mode

The NCP1395A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 1 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 opto-coupler 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 on-board 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
  • Timer-Based Input with Auto-Recovery Operation for Delayed Event Reaction
  • Adjustable Deadtime from 150 ns to 1.0 µs
  • 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
  • Enable Input for Immediate Event reaction or Simple ON/OFF Control
  • Operational Transconductance Amplifier (OTA) for Multiple Feedback Loops
  • Low Startup Current of 300 µA max
  • Common Collector Optocoupler Connection
Applications
  • LCD/Plasma TV Converters
  • High Power Ac--Dc Adapters for Notebooks
  • Industrial and Medical Power Sources
  • Offline Battery Chargers
Design & Development Tools (2)
Document TitleDocument ID/SizeRevisionRevision Date
LLC Circuits Design WorksheetLLC GENERIC DWS.XLS (1366.0kB)2
NCP1395 Design WorksheetNCP1395 DWS.XLS (95.0kB)2
Simulation Models (2)
Document TitleDocument ID/SizeRevisionRevision Date
NCP1395 ISSPICE MODELNCP1395 ISSPICE MODEL (20.0kB)0
NCP1395 ORCAD MODELNCP1395 ORCAD MODEL (24.0kB)0
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Controller, High Performance Resonant ModeNCP1395/D (343.0kB)3
Application Notes (6)
Document TitleDocument ID/SizeRevisionRevision Date
A 36 W Ballast Application with the NCP5181AND8244/D (188.0kB)1
A Simple DC SPICE Model for the LLC ConverterAND8255/D (474.0kB)2
Implementing a Medium Power AC-DC Converter with the NCP1395AND8257/D (726.0kB)2
Stability Analysis in Multiple Loop SystemsAND8327/D (213.0kB)0
The LCD TV Standby Power Consumption ReductionAND8279/D (136.0kB)0
Understanding the LLC Structure in Resonant ApplicationsAND8311/D (416.0kB)0
Package Drawings (2)
Document TitleDocument ID/SizeRevision
PDIP-16648-08 (34.2kB)V
SOIC 16 LEAD751B-05 (38.2kB)K
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP1395ADR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.57
NCP1395APGObsoletePb-free Halide freePDIP-16648-081Tube25
NCP1395BDR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.57
NCP1395BPGObsoletePb-free Halide freePDIP-16648-081Tube25
Specifications
ProductTopologyControl Modefsw Typ (kHz)Stand-by ModeUVLO (V)Short Circuit ProtectionLatchSoft StartVCC Max (V)Drive Cap. (mA)
NCP1395ADR2GHalf-BridgeVoltage Mode1000YesYesYesYesYes20180 / 180
NCP1395BDR2GHalf-BridgeVoltage Mode1000YesYesYesYesYes20180 / 180
Controller, High Performance Resonant Mode (343.0kB) NCP1395
LLC Circuits Design Worksheet NCP1910
NCP1395 Design Worksheet NCP1395
NCP1395 ISSPICE MODEL NCP1396
NCP1395 ORCAD MODEL NCP1396
A 36 W Ballast Application with the NCP5181 NCP1395
A Simple DC SPICE Model for the LLC Converter NCP1910
Implementing a Medium Power AC-DC Converter with the NCP1395 NCP1395
Stability Analysis in Multiple Loop Systems NCP1055
The LCD TV Standby Power Consumption Reduction NCP1653
Understanding the LLC Structure in Resonant Applications NCP1910
SOIC 16 LEAD MC14504B
PDIP-16 MC10H350
NCP1395
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