2024年4月16日发(作者：8848钛金手机价格表)

VIPER16

Fixed frequency VIPer

TM

plus family

Features

■

■

■

800 V avalanche rugged power section

PWM operation with frequency jittering for low

EMI

Operating frequency:

–60 kHz for L type

–115 kHz for H type

No need of auxiliary winding for low power

application

Standby power < 50 mW at 265 V

AC

Limiting current with adjustable set point

On-board soft-start

Safe auto-restart after a fault condition

Hysteretic thermal shutdown

SO16 narrow

SO-16

DIP-7

Description

The device is an off-line converter with an 800 V

avalanche ruggedness power section, a PWM

controller, user defined overcurrent limit,

protection against feedback network

disconnection, hysteretic thermal protection, soft

start up and safe auto restart after any fault

condition. It is able to power itself directly from the

rectified mains, eliminating the need for an

auxiliary bias winding.

Advance frequency jittering reduces EMI filter

cost. Burst mode operation and the devices very

low consumption both help to meet the standard

set by energy saving regulations.

Figure l application

■

■

■

■

■

■

Application

■

■

■

■

Replacement of capacitive power supply

Auxiliary power supply for appliances,

Power metering

LED drivers

Table summary

Order codes

VIPER16LN

VIPER16HN

VIPER16HD

VIPER16HDTR

VIPER16LD

VIPER16LDTR

SO16 narrow

Package

DIP-7

Packaging

Tube

Tube

Tape and reel

Tube

Tape and reel

Doc ID 15232 Rev 51/25

25

October 2011

ContentsVIPER16

Contents

1

2

3

4

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.1

4.2

4.3

Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5

6

7

8

9

10

11

12

13

14

15

16

17

2/25

Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Typical circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

High voltage current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Soft start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Adjustable current limit set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

FB pin and COMP pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Automatic auto restart after overload or short-circuit . . . . . . . . . . . . . 17

Open loop failure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Doc ID 15232 Rev 5

VIPER16Block diagram

1 Block diagram

Figure 2.

Block diagram

2 Typical power

Table 2.

Typical power

230 V

AC

Adapter

(1)

9 W

Open frame

(2)

10 W

Adapter

(1)

5 W

85-265 V

AC

Open frame

(2)

6 W

Part number

VIPER16

l continuous power in non ventilated enclosed adapter measured at 50

°

C ambient.

m practical continuous power in an open frame design at 50

°

C ambient, with adequate heat

sinking.

Doc ID 15232 Rev 53/25

Pin settingsVIPER16

3 Pin settings

Figure tion diagram (top view)

$2!).

$2!).

.