11
LT1248
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
300W, 382V Preregulator
Kool M?is a registered trademark of Magnetics, Inc.

+

+
I
M
 = 
I
A
2
I
B
200礎
2
VA
OUT
7.5V
7.9V
12礎
5V
EA
V
REF

+

+

+
2.2V
32k
I
A
I
B
7礎
I
M
7.5V
V
REF

+
V
CC
16V TO 10V
2.6V/2.2V

+
0.7V
OSC
R
R
S
Q
C
SET
R
SET
6
11
10
7
9
5
4
2
1
15
16
12
14
SS
OVP
I
AC
V
SENSE
EN/SYNC
M
OUT
I
SENSE
3
CA
OUT
V
CC
RUN
CA
RUN
16V
GND

+
GTDR
1000pF
SYNC
1N5819
 
4.7nF
1M
20k
0.47礔
0.047礔
330k
0.1礔
1nF
8
0.01礔
13
100pF
PK
LIM
20k
1%
R
REF
4k
V
OUT
180礔
T
90V
TO
270V
EMI
FILTER
+

4k
20k
R
S
0.2&
50k
750礖*
1M
1%
MURH860
V
CC
= 18V**
56礔
35V
10&
15k

+
1248 TA01
IRF840
ONE SHOT
200ns
6A
M1
1. COILTRONICS CTX02-12236-1 (TYPE 52 CORE)
  AIR MOVEMENT NEEDED AT POWER LEVEL GREATER THAN 250W.
2. COILTRONICS CTX02-12295 (MAGNETICS Kool M?/DIV>
?/DIV>
 77930 CORE)
SEE START-UP AND SUPPLY VOLTAGE SECTION FOR V
CC
 GENERATOR.
THIS SCHOTTKY DIODE IS TO CLAMP GTDR WHEN MOS SWITCH
TURNS OFF. PARASITIC INDUCTANCE AND GATE CAPACITANCE MAY
TURN ON CHIP SUBSTRATE DIODE AND CAUSE ERRATIC OPERATIONS
IF GTDR IS NOT CLAMPED.
*
**
 
+
+
A
PPLICATI
TYPICAL
相关PDF资料
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相关代理商/技术参数
LT1248IS#PBF 制造商:Linear Technology 功能描述:IC PFC CURRENT 25V SOIC-16 制造商:Linear Technology 功能描述:IC, PFC, CURRENT, 25V, SOIC-16
LT1248IS#TR 功能描述:IC PFC CTRLR AVERAGE CURR 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - PFC(功率因数修正) 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电(DCM) 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC(0.154",3.90mm 宽) 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6
LT1248IS#TRPBF 功能描述:IC PFC CTRLR AVERAGE CURR 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - PFC(功率因数修正) 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电(DCM) 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC(0.154",3.90mm 宽) 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6
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LT1249_01 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Factor Controller
LT1249C 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Factor Controller
LT1249CN8 功能描述:IC PFC CTRLR AVERAGE CURR 8DIP RoHS:否 类别:集成电路 (IC) >> PMIC - PFC(功率因数修正) 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电(DCM) 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC(0.154",3.90mm 宽) 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6
LT1249CN8#PBF 功能描述:IC PFC CTRLR AVERAGE CURR 8DIP RoHS:是 类别:集成电路 (IC) >> PMIC - PFC(功率因数修正) 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电(DCM) 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC(0.154",3.90mm 宽) 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6