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參數資料
| 型號： | TOP414G |
| 廠商： | POWER INTEGRATIONS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0-21 W TOPSwitch using a 18-90 VDC input |
| 中文描述： | 4.25 A SWITCHING REGULATOR, 132 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MS-001-AB, SMD-8 |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 434K |
| 代理商： | TOP414G |
April 1999
TOP412/414
TOPSwitch
Family
Three-terminal DC to DC PWM Switch
Product Highlights
Low Cost Replacement for Discrete Switchers
Up to 15 fewer components - cuts cost, increases reliability
Allows for a smaller and lighter solution under 12 mm
height, all surface mount components
Over 80% Efficiency in Flyback Topology
Built-in start-up and current limit reduce DC losses
Low capacitance MOSFET cuts switching losses
CMOS controller/gate driver consumes only 7 mW
70% maximum duty cycle minimizes conduction losses
Simplifies Design - Reduces Time to Market
Integrated PWM Controller and high power MOSFET
Only one external capacitor needed for compensation,
bypass and start-up/auto-restart functions
System Level Fault Protection Features
Auto-restart and cycle by cycle current limiting functions
handle both primary and secondary faults
On-chip latching thermal shutdown protects the entire
system against overload
Highly Versatile
Implements Buck, Boost, Flyback or Forward topology
Easily interfaces with both opto and primary feedback
Supports continuous or discontinuous mode of operation
Specified for operation down to 16 V DC input
Description
The
TOPSwitch
family implements, with only three terminals,
all functions necessary for a DC to DC, converter: high voltage
N-channel power MOSFET with controlled turn-on gate driver,
voltage mode PWM controller with integrated 120 kHz oscillator,
high voltage start-up bias circuit, bandgap derived reference,
bias shunt regulator/error amplifier for loop compensation and
fault protection circuitry. Compared to discrete MOSFET and
controller or self oscillating (RCC) switching converter solutions,
a
TOPSwitch
integrated circuit can reduce total cost, component
count, size, weight and at the same time increase efficiency and
system reliability. This device is well suited for Telecom,
Cablecom and other DC to DC converter applications up to
Figure 1. Typical Application.
MINIMUM
INPUT
VOLTAGE
ORDER PART NUMBER
Output Power Capability
1-4
18 VDC
3 W
9 W
TOP412G
TOP414G
24 VDC
36 VDC
48 VDC
60 VDC
72 VDC
90 VDC
12 W
Table 1. TOP412/414 Output Power.
Notes:
1
. Assumes maximum junction temperature of 100
°
C
2
. Assumes output of 5 V and K
of 0.4
3.
Soldered to 1 sq. inch
(645 mm
2
), 2 oz. copper clad (610 gm/mm
2
)
4
. The continuous
power capability in a given application depends on thermal
environment, transformer design, efficiency required, input storage
capacity, etc.
4 W
5 W
6 W
7 W
9 W
18 W
21 W
12 W
15 W
15 W
18 W
PI-2371-120198
D
S
C
CONTROL
TOP414
VIN
VO
21W of output power. Internally, the lead frame of the
SMD-8 package uses six of its pins to transfer heat from the chip
directly to the board, eliminating the cost of a heat sink.
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相關代理商/技術參數 |
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| TOP414GN | 功能描述:交流/直流開關轉換器 12 W 48 VDC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TOP414GN-TL | 功能描述:交流/直流開關轉換器 12 W 48 VDC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TOP414G-TL | 功能描述:交流/直流開關轉換器 12 W 48 VDC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
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