Datenblatt-Suchmaschine für elektronische Bauteile |
|
LM25115A Datenblatt(PDF) 1 Page - Texas Instruments |
|
LM25115A Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 26 page VBIAS FB AGND COMP SYNC VCC TRK/SS HB HO HS LO PGND VOUT CO CS RAMP LM25115A +12V RS FEEDBACK Main Converter PWM Controller INPUT Phase Signal 3.3V Main Auxiliary Output 2.5V Main Output 3.3V LM25115A www.ti.com SNVS501B – FEBRUARY 2007 – REVISED APRIL 2013 LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down Tracking Check for Samples: LM25115A 1 FEATURES DESCRIPTION The LM25115A controller contains all of the features 2 • Power-up/Power-down Tracking necessary to produce multiple tracking outputs using • Self-synchronization to Main Channel Output the Secondary Side Post Regulation (SSPR) • Leading Edge Pulse Width Modulation technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the • Valley Current Mode Control secondary side switching waveform of an isolated • Standalone DC/DC Synchronous Buck Mode power converter. LM25115A can be also used as a • Operates from AC or DC Input up to 42V standalone DC/DC synchronous buck controller (Refer to Standalone DC/DC Synchronous Buck • Wide 4.5V to 30V Bias Supply Range Mode section). Regulation of the auxiliary output • Wide 0.75V to 13.5V Output Range. voltage is achieved by leading edge pulse width • Top and Bottom Gate Drivers Sink 2.5A Peak modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either • Adaptive Gate Driver Dead-time Control current mode or voltage mode control of the main • Wide Bandwidth Error Amplifier (4MHz) output. The LM25115A drives external high-side and • Programmable Soft-start low-side NMOS power switches configured as a • Thermal Shutdown Protection synchronous buck regulator. A current sense amplifier provides overload protection and operates • TSSOP-16 package over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown. Typical Application Circuit Figure 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Ähnliche Teilenummer - LM25115A_15 |
|
Ähnliche Beschreibung - LM25115A_15 |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |