- 您现在的位置：买卖IC网 > PDF目录19879 > TOP249YN (Power Integrations)IC OFFLINE SWIT UVLO HV TO220 PDF资料下载
参数资料
| 型号： | TOP249YN |
| 厂商： | Power Integrations |
| 文件页数： | 23/52页 |
| 文件大小： | 0K |
| 描述： | IC OFFLINE SWIT UVLO HV TO220 |
| 标准包装： | 50 |
| 输出隔离： | 隔离 |
| 频率范围： | 66 ~ 132kHz |
| 输出电压： | 700V |
| 功率（瓦特）： | 250W |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | TO-220-7（成形引线），6 引线 |
| 供应商设备封装： | TO-220-7C |
| 包装： | 管件 |
| 产品目录页面： | 1204 (CN2011-ZH PDF) |
| 其它名称： | 596-1080-5 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
TOP242-250
Multiple Output, 60 W, 185-265 VAC Input Power Supply
Figure 44 shows a multiple output supply typical for high end
set-top boxes or cable decoders containing high capacity hard
disks for recording. The supply delivers an output power of
45 W continuous/60 W peak (thermally limited) from an input
voltage of 185 VAC to 265 VAC. Ef?ciency at 45 W,
185 VAC is ≥ 75%.
The 3.3 V and 5 V outputs are regulated to ±5% without
the need for secondary linear regulators. DC stacking (the
secondary winding reference for the other output voltages is
connected to the cathode of D10 rather than the anode) is used
to minimize the voltage error for the higher voltage outputs.
Due to the high ambient operating temperature requirement
typical of a set-top box (60 ° C), the TOP246Y is used to
reduce conduction losses and minimize heatsink size. Resistor
R2 sets the device current limit to 80% of typical to limit
overload power. The line sense resistor (R1) protects the
TOPSwitch-GX from line surges and transients by sensing when
the DC rail voltage rises to above 450 V. In this condition the
TOPSwitch-GX stops switching, extending the input voltage
withstand to 496 VAC, which is ideal for countries with
poor power quality. A thermistor (RT1) is used to prevent
premature failure of the fuse by limiting the inrush current (due
to the relatively large size of C2). An optional MOV (RV1)
extends the differential surge protection to 6 kV from 4 kV.
Leakage inductance clamping is provided by VR1, R5 and C5,
keeping the DRAIN voltage below 700 V under all conditions.
Resistor R5 and capacitor C5 are selected such that VR1
dissipates very little power except during overload conditions.
The frequency jittering feature of TOPSwitch-GX allows the
circuit shown to meet CISPR22B with simple EMI ?ltering
(C1, L1 and C6) and the output grounded.
The secondaries are recti?ed and smoothed by D7 to D11, C7,
C9, C11, C13, C14, C16 and C17. Diode D11 for the 3.3 V
output is a Schottky diode to maximize ef?ciency. Diode D10
for the 5 V output is a PN type to center the 5 V output at 5 V.
The 3.3 V and 5 V output require two capacitors in parallel to
meet the ripple current requirement. Switching noise ?ltering
is provided by L2 to L5 and C8, C10, C12, C15 and C18.
Resistor R6 prevents peak charging of the lightly loaded 30 V
output. The outputs are regulated using a secondary reference
(U3). Both the 3.3 V and 5 V outputs are sensed via R11
and R10. Resistor R8 provides bias for U3 and R7 sets the
overall DC gain. Resistor R9, C19, R3 and C5 provide loop
compensation. A soft-?nish capacitor (C20) eliminates output
overshoot.
1N4007 V
L5
3.3 μ H
5A
PERFORMANCE SUMMARY
Output Power: 45 W Cont./60 W Peak
Regulation:
3.3 V: ± 5%
5 V: ± 5%
12 V: ± 7%
18 V: ± 7%
30 V: ± 8%
Efficiency: ≥ 75%
No Load Consumption: 0.6 W
D1-D4
VR1 R5
P6KE170 68 k ?
2 W
D6
1N4937
C6
2.2 nF
Y1
C5
1 nF
400 V
R6 D7
10 ? UF4003
D8
UF5402
D9
UF5402
D10
BYV32-200
D11
MBR1045
C7
47 μ F
50 V
C9
330 μ F
25 V
C11
390 μ F
35 V
C13 C16
1000 μ F 1000 μ F
25 V 25 V
C14
1000 μ F
25 V
C17
1000 μ F
25 V
L2
3.3 μ H
3A
L3
3.3 μ H
3A
L4
3.3 μ H
5A
C15
220 μ F
16 V
C18
220 μ F
16 V
C12
100 μ F
25 V
C8
10 μ F
50 V
C10
100 μ F
25 V
30 V @
0.03 A
18 V @
0.5 A
12 V @
0.6 A
5 V @
3.2 A
3.3 V @
3 A
RTN
TOP246Y
R3
6.8 ?
R2
9.08 k ?
L1
20 mH
0.8A
C1
0.1 μ F
X1
J1
L
RV1
275 V
14 mm
F1
3.15 A
RT1
10 ?
1.7 A
C2
68 μ F
400 V
D
S
R1
2 M ?
1/2 W T1
TOPSwitch-GX
L
CONTROL U1
C
C3
0.1 μ F
X F 50 V
C5
47 μ F
10 V
D6
1N4148
C3
1 μ F
50 V
C20
22 μ F
10 V
R7
150 ?
U2
LTV817
R8
1 k ?
R9
3.3 k ?
U3
TL431
R11
9.53
k ?
C19
0.1 μ F
R12
10 k
R10
15.0
k ?
N
Figure 44. 60 W Multiple Output Power Supply using TOP246.
PI-2693-081704
O
11/05
23
相关PDF资料 |
PDF描述 |
|---|---|
| V150C8H100BL3 | CONVERTER MOD DC/DC 8V 100W |
| TOP261YN | IC OFFLINE SWIT PROG OVP TO220 |
| EYM36DTBD-S273 | CONN EDGECARD 72POS R/A .156 SLD |
| V150C8H100BL2 | CONVERTER MOD DC/DC 8V 100W |
| TOP248YN | IC OFFLINE SWIT UVLO HV TO220 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TOP249YN- | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
| TOP249YN-TL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
| TOP249Y-TL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher |
| TOP250 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible,EcoSmart, Integrated Off-line Switcher |
| TOP250F | 功能描述:IC OFFLINE SWIT UVLO HV TO262 RoHS:否 类别:集成电路 (IC) >> PMIC - AC-DC 转换器，离线开关 系列:TOPSwitch®-GX 标准包装:1 系列:FPS™ 输出隔离:隔离 频率范围:61kHz ~ 73kHz 输入电压:8 V ~ 26 V 输出电压:650V 功率（瓦特）:12W 工作温度:-40°C ~ 115°C 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-MDIP 包装:Digi-Reel® 其它名称:FSL206MRBNFSDKR |
发布紧急采购，3分钟左右您将得到回复。