Datasheet > TOP202

TOP202

更新时间： 2024-02-21 20:31:45

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		开关
页数	文件大小	规格书
16页	164K
描述
Three-terminal Off-line PWM Switch

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技术参数
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TOP202 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SFM	包装说明：	TO-220,
针数：	3	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.82	Is Samacsys：	N
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最小输入电压：	36 V
JESD-30 代码：	R-PSFM-T3	功能数量：	1
端子数量：	3	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出电压：	5.7 V
封装主体材料：	PLASTIC/EPOXY	封装代码：	TO-220
封装形状：	RECTANGULAR	封装形式：	FLANGE MOUNT
认证状态：	Not Qualified	表面贴装：	NO
切换器配置：	BOOST	最大切换频率：	100 kHz
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	THROUGH-HOLE	端子位置：	SINGLE
Base Number Matches：	1

TOP202 数据手册

TOP200-4/14

General Circuit Operation

Primary Feedback Regulation

the integrated high-voltage MOSFET

transistor within the TOP200 (U1). The

circuitoperatesataswitchingfrequency

of 100 kHz, set by the internal oscillator

of the TOP200. The clamp circuit

implemented by VR1 and D1 limits the

leading-edge voltage spike caused by

transformerleakageinductancetoasafe

value. The5Vpowersecondarywinding

is rectified and filtered by D2, C2, C3,

and L1 to create the 5 V output voltage.

current will flow into the control pin.

Increasing control pin current decreases

the duty cycle until a stable operating

point is reached. The output voltage is

proportional to the bias voltage by the

turnsratio oftheoutputtobiaswindings.

C5isusedtobypasstheCONTROLpin.

C5 also provides loop compensation for

the power supply by shunting AC

currents around the CONTROL pin

dynamicimpedance,andalsodetermines

the auto-restart frequency during start-

up and auto-restart conditions. See DN-

8formoreinformationregardingtheuse

of the TOP200 in bias supplies.

The circuit shown in Figure 7 is a simple

5 V, 5 W bias supply using the TOP200.

This universal input flyback power

supplyemploysprimary-sideregulation

from a transformer bias winding. This

approachisbestforlow-costapplications

requiring isolation and operation within

a narrow range of load variation. Line

and load regulation of±5% or better can

be achieved from 10% to 100% of rated

load.

The output of the T1 bias winding is

rectified and filtered by D3, R1, and C5.

The voltage across C5 is regulated by

U1, and is determined by the 5.7 V

internal shunt regulator at the

CONTROL pin of U1. When the

rectified bias voltage on C5 begins to

exceed the shunt regulator voltage,

Voltage feedback is obtained from the

transformer (T1) bias winding, which

eliminates the need for optocoupler and

secondary-referenced error amplifier.

High-voltage DC is applied to the

primary winding of T1. The other side

of the transformer primary is driven by

1N5822

(Bead)

5 V

VR1

1N4764

330 µF

25 V

150 µF

25 V

RTN

UF4005

1N4148

INPUT

CIRCUIT PERFORMANCE:

Load Regulation - ±4%

(10% to 100%)

Line Regulation - ±1.5%

95 to 370 V DC

47 µF

22 Ω

DRAIN

SOURCE

Ripple Voltage ±25 mV

CONTROL

TOP200YAI

PI-1749-012296

Figure 7. Schematic Diagram of a Minimum Parts Count 5 V, 5 W Bias Supply Utilizing the TOP200.

7/96

1...3 4 567 8 9...16

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与TOP202相关器件

型号	品牌	描述	获取价格	数据表
TOP202YAI	POWERINT	Three-terminal Off-line PWM Switch	获取价格
TOP202YAI*	POWERINT	0-100 W TOPSwitch using 230 VAC input or 0	获取价格
TOP202YN	POWERINT	Family Three-terminal Off-line PWM Switch	获取价格
TOP203YAI	POWERINT	Three-terminal Off-line PWM Switch	获取价格
TOP203YAI*	POWERINT	0-100 W TOPSwitch using 230 VAC input or 0	获取价格
TOP204YA1	POWERINT	Three-terminal Off-line PWM Switch(160.70 k)	获取价格

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