reichelt elektronik GmbH & Co. KG
Elektronikring 1
26452 Sande Germany

phone: +49 (0)4422 955-333

HV9123NG-G :: PWM controller, high voltage, SO-14

Item-No.: HV9123NG-G
Category of goods: 1 = discountable


HV9123 is a Switch Mode Power Supply (SMPS) controller subsystem that can start and run directly from almost any DC input, from a 12-V battery to a rectified and filtered 240 V AC line. It contains all the elements required to build a single-switch converter except for the switch, magnetic assembly, output rectifier(s) and filter(s). A unique input circuit allows the HV9123 to self-start directly from a high voltage input, and subsequently take the power to operate from one of the outputs of the converter it is controlling, allowing very efficient operation while maintaining input-to-output galvanic isolation limited in voltage only by the insulation system of the associated magnetic assembly. A ±2% internal bandgap reference, internal operational amplifier, very high speed comparator, and output buffer allow production of rugged, high-performance, high-efficiency power supplies of 50 W or more, which can still be over 80% efficient at outputs of 1.0 W or less. The wide dynamic range of the controller system allows designs with extremely wide line and load variations with much less difficulty and much higher efficiency than usual. The exceptionally wide input voltage range also allows better usage of energy stored in input dropout capacitors than with other PWM ICs. Remote on/off controls allow either latching or nonlatching remote shutdown. During shutdown, the power required is under 6.0 mW. For detailed circuit and application information, please refer to application notes AN-H13, AN-H21 to AN-H24.

• 10 - 450 V input voltage range
• <1.3 mA supply current
• >1.0 MHz clock
• >20:1 dynamic range @ 500 kHz
• 99% maximum duty cycle version
• Low internal noise

Technical data:
• Input voltage: 10 - 450 V
• Input Current: 2.5 mA
• Feedback accuracy: ±2%
• Duty cycle: 99%
• Switch: external

Manufacturer : MICROCHIP
Factory number : HV9123NG-G
Package weight : 0.0001 kg
RoHS : conform
Technical information