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參數(shù)資料
| 型號： | LTC3900MPS8#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | PLASTIC, SOP-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 277K |
| 代理商： | LTC3900MPS8#TR |
LTC3900
1
3900fb
Typical applicaTion
DescripTion
Synchronous Rectifier Driver
for Forward Converters
FeaTures
applicaTions
n
48V Input Isolated DC/DC Converters
n
Isolated Telecom Power Supplies
n
High Voltage Distributed Power
Step-Down Converters
n
Industrial Control System Power Supplies
n
Automotive and Heavy Equipment
n
N-Channel Synchronous Rectifier MOSFET Driver
n
Programmable Timeout Protection
n
Reverse Inductor Current Protection
n
Pulse Transformer Synchronization
n
Wide VCC Supply Range: 4.5V to 11V
n
15ns Rise/Fall Times at VCC = 5V, CL = 4700pF
n
Undervoltage Lockout
n
Small SO-8 Package
The LTC3900 is a secondary-side synchronous recti-
fier driver designed to be used in isolated forward con-
verter power supplies. The chip drives N-channel rectifier
MOSFETs and accepts pulse sychronization from the
primary-side controller via a pulse transformer.
The LTC3900 incorporates a full range of protection for the
external MOSFETs. A programmable timeout function is
included that disables both drivers when the synchroniza-
tion signal is missing or incorrect. Additionally, the chip
sensestheoutputinductorcurrentthroughthedrain-source
resistance of the catch MOSFET, shutting off the MOSFET
if the inductor current reverses. The LTC3900 also shuts
off the drivers if the supply voltage is too low.
ISOLATION
BARRIER
T1
Q3
Q4
Q1
RCS1
RCS2
RCS3
CS+
CG
CS–
FG
SYNC
VCC
TIMER
LTC3900
RTMR
RSYNC
T2
CSG
R1
R2
CTMR
CVCC
VOUT
3.3V
40A
VIN
36V TO 72V
3900 F01
L0
D3
CZ
RZ
RB
DZ
COUT
QREG
+
GND
270
OPTO
COMP
FB
VIN
GND
OC
OUT
OC
ISENSE
SOUT
COMP
GND
LT1952
470
10m
SG
GATE
LT4430
OCI
LOAD CURRENT (A)
0
65
EFFICIENCY
(%)
70
75
80
85
10
20
30
40
3900 F10b
90
95
5
15
25
35
VOUT = 3.3V
VIN = 36V
VIN = 72V
VIN = 48V
Efficiency
Figure 1. Simplified Isolated Synchronous Forward Converter
L
, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC3900MPS8#PBF | SWITCHING REGULATOR, PDSO8 |
| LTC3900HS8 | SWITCHING REGULATOR, PDSO8 |
| LTC3900HS8#TRPBF | SWITCHING REGULATOR, PDSO8 |
| LTC3900HS8#TR | SWITCHING REGULATOR, PDSO8 |
| LTC3900MPS8#TRPBF | SWITCHING REGULATOR, PDSO8 |
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參數(shù)描述 |
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| LTC3901EGN | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
| LTC3901EGN#PBF | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
| LTC3901EGN#TR | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
| LTC3901EGN#TRPBF | 功能描述:IC DRIVER RECT SYNC CONV 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:5 系列:- 配置:低端 輸入類型:非反相 延遲時間:600ns 電流 - 峰:12A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導(dǎo)啟動）:- 電源電壓:14.2 V ~ 15.8 V 工作溫度:-20°C ~ 60°C 安裝類型:通孔 封裝/外殼:21-SIP 模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名稱:835-1063 |
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