DataSheetWiki


LTC3706 fiches techniques PDF

Linear Technology - Secondary-Side Synchronous Forward Controller

Numéro de référence LTC3706
Description Secondary-Side Synchronous Forward Controller
Fabricant Linear Technology 
Logo Linear Technology 





1 Page

No Preview Available !





LTC3706 fiche technique
FEATURES
n Secondary-Side Control for Fast Transient Response
n Self-Starting Architecture Eliminates Need for
Separate Bias Regulator
n Proprietary Gate Drive Encoding Scheme Reduces
System Complexity
n PolyPhase® Operation Reduces CIN Requirements
n Current Mode Control Ensures Current Sharing
n PLL Fixed Frequency: 100kHz to 500kHz
n ±1% Output Voltage Accuracy
n True Remote Sense Differential Amplifier
n Power Good Output Voltage Monitor
n High Voltage Linear Regulator Controller
n Wide Supply Range: 5V to 30V
n Available in a Narrow 24-Lead SSOP Package
APPLICATIONS
n Isolated 48V Telecommunication Systems
n Internet Servers and Routers
n Distributed Power Step-Down Converters
n Automotive and Heavy Equipment
L, LT, LTC, LTM, PolyPhase, Burst Mode, Linear Technology and the Linear logo are registered
trademarks and No RSENSE and ThinSOT are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 6144194, other patents pending.
LTC3706
Secondary-Side Synchronous
Forward Controller with
PolyPhase Capability
DESCRIPTION
The LTC®3706 is a PolyPhase capable secondary-side
controller for synchronous forward converters. When used
in conjunction with the LTC3705 gate driver and primary-
side controller, the part creates a complete isolated power
supply that combines the power of PolyPhase operation
with the speed of secondary-side control.
The LTC3706 has been designed to simplify the design
of highly efficient, secondary-side forward converters.
Working in concert with the LTC3705, the LTC3706 forms
a robust, self-starting converter that eliminates the need
for the separate bias regulator that is commonly used in
secondary-side control applications. In addition, a pro-
prietary scheme is used to multiplex gate drive signals
and DC bias power across the isolation barrier through a
single, tiny pulse transformer.
The LTC3706 provides remote sensing, accurate power
good and overvoltage monitoring circuits to support preci-
sion, high current applications. A linear regulator controller
with thermal protection is also provided to simplify the
generation of secondary-side bias voltage.
The LTC3706 is available in a 24-lead SSOP package.
TYPICAL APPLICATION
36V-72V to 3.3V/20A Isolated Forward Converter
VIN+ T1
Si7852DP
••
MURS120
1.2Ω
L1
1.2µH
VOUT+
1µF
100V
×3
VIN–
Si7852DP
30mΩ
1W
Si7336ADP
MURS120
2mΩ
2W
365k
1%
15k
1%
FQT7N10
100k
BAS21 0.22µF
L1: COILCRAFT SER2010-122
T1: PULSE PA0807
T2: PULSE PA0297
2.2µF
25V
33nF
NDRV
UVLO
BOOST TG TS BG IS
FB/IN+
VCC
SS/FLT
LTC3705
FS/IN
GND PGND VSLMT
T2
••
162k
1µF
33nF
Si7336ADP
×2
CMPSH1-4
10µF
25V
CZT3019
IS– FG
IS+
PT+
SW SG
VIN
LTC3706
NDRV VCC
FS/SYNC
FB
ITH
PT
RUN/SS GND PGND PHASE SLP MODE REGSD
2.2µF
16V
102k
1%
680pF
20k
22.6k
1%
330µF
6.3V
×3
VOUT–
3706 TA01
3706fd
1

PagesPages 22
Télécharger [ LTC3706 ]


Fiche technique recommandé

No Description détaillée Fabricant
LTC3700 Constant Frequency Step-Down DC/DC Controller Linear Technology
Linear Technology
LTC3701 2-Phase/ Low Input Voltage/ Dual Step-Down DC/DC Controller Linear Technology
Linear Technology
LTC3702 (LTC3000 Series) SEVEN-SEGMENT NUMERIC LED DISPLAY LITE-ON Electronics
LITE-ON Electronics
LTC3703 100V Synchronous Switching Regulator Controller Linear Technology
Linear Technology

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche