NCP1910: High Performance Combo Controller for ATX Power Supplies

Housed in a SO-24WB package, the NCP1910 combines a state-of-the-art circuitry aimed to powering next generation of ATX or flat TVs converters. With a 65 kHz Continuous Conduction Mode Power Factor Controller and a LLC controller hosting a high-voltage driver, the NCP1910 is ready to power 85+ types of offline power supplies. To satisfy stringent efficiency considerations, the PFC circuit implements an adjustable frequency fold back to reduce switching losses as the load is going light. To cope with all the signal sequencing required by the ATX and flat TVs specifications, the controller includes several dedicated pins enabling handshake between the secondary and the primary sides. These signals include a power-good line but also a control pin which turns the controller on and off via an opto coupler. Safety-wise, a second OVP input offers the necessary redundancy in case the main feedback network would drift away. Finally, a fast fault input immediately reacts in presence of an over current condition by triggering an auto-recovery soft-start sequence.

技术特性

Fixed−Frequency 65 kHz CCM Power Factor Controller
Average Current−Mode Control for Low Line Distortion
Dynamic Response Enhancer Reduces Bulk Undershoot
Independent Over Voltage Protection Sensing Pin with Latch−off Capability
Adjustable Frequency Fold Back Improves Light Load Efficiency
Adjustable Line Brown−out Protection with 50 ms Delay to Help Meeting Hold−up Time Specifications
Programmable Over current Threshold Leads to an Optimized Sensing Resistor
±1 A peak Current Drive Capability
LLC Controller Operates from 25 kHz to 500 kHz
On Board 600 V High−Voltage Drivers
• 1 A/0.5 A Sink/Source Capability
Minimum Frequency Precision Down to ±3% Over Temperature Range
Internally Fixed Dead−Time Value of 300 ns
Adjustable Soft−Start Sequence
Fast Fault Input with Soft−Start Trigger for Immediate Auto−Recovery Protection

终端产品

ATX or Server power supplies
LCD or Plasma TVs

应用

Flat panel display powr converters
High power ac-dc adpaters for notebooks
Computing power supplies

封装图 PACKAGE DIMENSIONS

订购信息 Ordering Information

产品

状况

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具体说明

封装

MSL*

容器

预算价格 (1千个数量的单价）

类型

外形

类型

数量

NCP1910A65DWR2G

Active

Pb-free

Halide free

High Performance Combo Controller for ATX Power Supplies

SOIC-24

752AB

Tape and Reel

1000

$1.34

NCP1910B65DWR2G