ALTAIR04-900 STMicroelectronics

ALTAIR04-900 Off-line all-primary-sensing switching regulator Datasheet - production data Low standby consumption Overcurrent protection against transformer saturation and secondary diode short-circuit SO16N package Applications SO16N SMPS for energy metering Auxiliary power supplies for 3-phase input industrial systems Features AC-DC adapters Optoless primary side constant voltage operations Description Adjustable and mains-independent maximum The ALTAIR04-900 is a high voltage all-primary- output current for safe operations during sensing switcher, operating directly from the overload/short-circuit conditions rectified mains with minimum external parts. It 900 V avalanche-rugged internal power section combines a high-performance low voltage PWM controller chip and a 900 V avalanche-rugged Quasi-resonant valley switching operation power section in the same package. Figure 1. Block diagram +V+V oouutt +V+Vii nn IsIs tatarrtt--upup VcVccc IInntt eernarnall s s uuppppllyy bubuss DRDRAAIINN SUSUPPPP LLYY PRPRPROOOTTT EEECCCTTTIIIOOONNN & & & VrVreeff & U& UVVLLOO FFFEEEEDEDEDFFFOOORRRWWWARARARDDD LOLOLOGGGIII CCC UVUV LLOO PrProott II FFFF BBBLLLANANANKIKIKINNNGGG TITITIMMMEEE STSTSTAAA RRRTTT EEERRR InInteterrnn.. 3.3.33 V V susuppppllyy bubuss TUTURRNN --ONON SS LOGILOGICC RzRzccdd VcVc ZCZCDD//FF BB DEDEDE MMMAAAGGG QQ --- LOGILOGILOGICCC RR LELELEBBB RR +++ SSS SSS UVUV LLOO RfRfbb QQQ QQQ 1 V1 V IrIreeff RRR RRR --- +++ -- II S/S/S/HHH FFFF +++ --- PrProott ++ 2.2.5 V5 V RRFFFF COCOMMPP IRIREFEF GNGNDD SSOOUURCERCE RcRcoommpp CrCreeff RsRseennssee CcCcoommpp October 2014 DocID18211 Rev 3 1/29 This is information on a product in full production. www.st.comContents ALTAIR04-900 Contents 1 Description . 3 2 Pin connection 4 3 Maximum ratings 6 3.1 Absolute maximum ratings . 6 3.2 Thermal data . 6 4 Electrical characteristics . 7 5 Application information . 11 5.1 Power section and gate driver . 12 5.2 High voltage start-up generator 12 5.3 Zero-current detection and triggering block . 13 5.4 Constant voltage operation . 15 5.5 Constant current operation 16 5.6 Voltage feed-forward block 17 5.7 Burst-mode operation (no load or very light load) 18 5.8 Soft-start and starter block 19 5.9 Hiccup-mode OCP 20 5.10 Layout recommendations . 21 6 Typical applications 22 6.1 Test board: evaluation data . 23 6.2 Test board: main waveforms 24 7 Package mechanical data 25 8 Ordering information . 27 9 Revision history . 28 2/29 DocID18211 Rev 3