Datasheet > DPA423

DPA423

更新时间： 2024-10-31 22:29:47

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		转换器
页数	文件大小	规格书
36页	289K
描述
Highly Integrated DC-DC Converter ICs for Distributed Power Architectures

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DPA423 数据手册

DPA423-426

™

DPA-Switch Family

Highly Integrated DC-DC Converter ICs

for Distributed Power Architectures

Product Highlights

Highly Integrated Solution

• Eliminates 20-50 external components–saves space, cost

• Integrates 220 V high frequency MOSFET, PWM control

• Lower cost plastic DIP surface mount (G package) and

SENSE

CIRCUIT

DPA-Switch

through-hole (P package) options for designs ≤35 W

CONTROL

RESET/

CLAMP

CIRCUIT

Superior Performance and Flexibility

• Eliminates all external current sensing circuitry

• Built-inauto-restartforoutputoverload/openloopprotection

• Pin selectable 300/400 kHz fixed frequency

PI-2770-032002

• Wide input (line) voltage range: 16-75 VDC

• Source connected tab reduces EMI

Figure 1. Typical Forward Converter Application.

• Line under-voltage (UV) detection: meets ETSI standards

• Line overvoltage (OV) shutdown protection

• Low cost synchronous rectification: line UV/OV shut down

limits gate drive voltage range from transformer winding

• Fully integrated soft-start for minimum stress/overshoot

• Externally programmable current limit

• Supports forward or flyback topology

• Cycle skipping: regulation to zero load without pre-load

• Hysteretic thermal shutdown for automatic fault recovery

OUTPUT POWER TABLE

36-75 VDC INPUT RANGE (FORWARD)^2,4

Total Device

Max

0.5 W 1 W 2.5 W 4 W 6 W Power

Output¹

Dissipation³

PRODUCT⁴

DPA423

12 W 16 W

18 W

35 W

70 W

16 W 23 W 35 W

DPA424

EcoSmart^®- Energy Efficient

• Extremely low consumption at no load

DPA425

23 W 32 W 50 W 62 W

25 W 35 W 55 W 70 W 83 W 100 W

36-75 VDC INPUT RANGE (FLYBACK)²

DPA426

• Cycle skipping at light load for high standby efficiency

Total Device³

Max

1.5 W Power

Output¹

Applications

Dissipation

PRODUCT⁴

DPA423

0.5 W 0.75 W 1 W

• Telco central office equipment: xDSL, ISDN, PABX, etc.

• Distributed power architectures (24 V/48 V bus, etc.)

• Digital feature phones, VoIP phones, PoE

• Industrial controls (24 V/48 V)

9 W

13 W

10 W 14.5 W 18 W 24 W 26 W

DPA424

DPA425

25.5 W 52 W

Description

Table 1. Notes: 1. Maximum output power is limited by device internal

current limit. 2. See Applications Considerations section for complete

description of assumptions and for output powers with other input voltage

ranges. 3. For device dissipation of 1.5 W or below, use Por G packages.

Device dissipation above 1.5 W is possible only with R package. 4. See

Part Ordering Information. 5. Due to higher switching losses, the DPA425

may not deliver additional power compared to a smaller device.

The DPA-Switch IC family introduces a highly integrated

solution for DC-DC conversion applications in the 16-75 VDC

input range.

DPA-Switch uses the same proven topology as TOPSwitch, cost

effectively integrating the high voltage power MOSFET, PWM

control, fault protection and other control circuitry onto a single

CMOS chip. High performance features are enabled with three

user configurable pins.

The following transparent or built-in features are also provided:

soft-start, cycle skipping down to zero load and hysteretic

thermal shutdown. In addition, all critical parameters (i.e.

current limit, frequency, PWM gain) have tight temperature

and absolute tolerance, to simplify design and optimize system

cost.

January 2004

12 3 4 5 6 7...36

中文翻译

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与DPA423相关器件

型号	品牌	获取价格	描述	数据表
DPA423G	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423GN	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423GNTL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423GTL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423G-TL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Distributed Power Architectures
DPA423P	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423PN	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423PNTL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423PTL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications
DPA423P-TL	POWERINT	获取价格	Highly Integrated DC-DC Converter ICs for Distributed Power Architectures

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