VIPER317HDTR datasheet(13/39 Pages) STMICROELECTRONICS

Il numero della parte	VIPER317HDTR

Spiegazioni elettronici	Energy saving offline high voltage converter

PDF	39 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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13 / 39 page

General description

4.1

Block diagram

Figure 23. Block diagram

VCC

DRAIN

Internal Supply bus

RSENSE

REGULATOR

Start up

THERMAL

DIODE

(OTP)

GND

HV DISABLE

LOGIC

SOFT START

JITTERED

OSCILLATOR

E/A

VFB_REF

PWM

TURN ON

LOGIC

COMP

OCP

UVLO VCC

VCC_clamp

tOVL filter

LEB

OTP

OCP

IDLIM ref

LIGHT LOAD PFM

PROTECTION

LOGIC

tRESTART

OVP LOGIC

tOVP_REST

OVP

TSD LOGIC

tRESTART

IHV

ICH*

- VOVP_th

VUVP_th

tOVP_DEB filter

UVP

IC DISABLE

LOGIC

IC_DIS

tUVP_REST filter

IC_DIS_SET

IC_DIS_RESET

tUVP_DEB filter

4.2

Typical power capability

Table 8. Typical power

Vin: 230 VAC

Vin: 85-265 VAC

Adapter (1)

Open Frame (2)

Adapter (1)

Open Frame (2)

27 W

31 W

16 W

19 W

1. Typical continuous power in non-ventilated enclosed adapter measured at 50°C ambient.

2. Maximum practical continuous power in an open frame design at 50°C ambient, with adequate heat sinking.

VIPER31

General description

DS13285 - Rev 6

page 13/39

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