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NCP1207 Datasheet PDF

Part Series:NCP1207 Series
Category:AC-DC Converters
Description:NCP1207ADR2G, PWM Current Mode Controller, 500mA, 60kHz, 20V, 8Pin SOIC
Document:NCP1207APG Datasheet PDF (28 Pages)

NCP1207 AC-DC Converters Datasheet PDF

NCP1207 Datasheet PDF AC-DC Converters

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NCP1207BDR2G, PWM Current Mode Controller, 500mA, 60kHz, 20V, 7Pin SOIC
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PWM Controller, Free Running Quasi-Resonant Current Mode

NCP1207ADR2G - ON Semiconductor Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
1 MHz
Number of Pins
8 Pin
Supply Voltage (DC)
5.30V (min)
Case/Package
SOIC-8
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NCP1207ADR2G - ON Semiconductor Function Overview

The NCP1207ADR2G is a PWM Current-Mode Controller for free running quasi-resonant operation. It combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical conduction mode in any load/line conditions and minimum drain voltage switching (quasi-resonant operation). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can be heard. For the controller an internal 8ms timer prevents the free-run frequency to exceed 125kHz. For the controller the internal timer duration is reduced to 4.5ms to allow operation at higher frequencies. The dynamic self-supply (DSS) drastically simplifies the transformer design in avoiding the use of an auxiliary winding to supply the controller. Due to its high-voltage technology, the IC is directly connected to the high-voltage DC rail.
Free-running borderline/critical mode quasi-resonant operation
Current-mode with adjustable skip-cycle capability
No auxiliary winding VCC operation
Auto-recovery over-current protection
Latching over-voltage protection
External latch triggering via over-temperature signal
Adjustable skip level
Internal temperature shutdown
Direct opto coupler connection
SPICE models available for transient analysis
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