VIPER113XSTR datasheet(5/37 Pages) STMICROELECTRONICS

Part #	VIPER113XSTR

Description	Energy saving offline high voltage converter

PDF	37 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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5 / 37 page

DS11873 Rev 5

5/37

VIPer11

Pin setting

COMP

Compensation. It is the output of the internal E/A. A compensation network is

placed between this pin and GND to achieve stability and good dynamic

performance of the control loop. In case of secondary feedback, the internal E/A

must be disabled and the COMP directly driven by the optocoupler to control the

DRAIN peak current setpoint.

6 to 10

DRAIN

MOSFET drain. The internal high voltage current source sinks current from this

pin to charge the VCC capacitor at startup and during steady-state operation.

These pins are mechanically connected to the internal metal PAD of the

MOSFET in order to facilitate heat dissipation. On the PCB a copper area must

be placed under these pins in order to decrease the total junction-to-ambient

thermal resistance thus facilitating the power dissipation.

Table 1. Pin description (continued)

SSOP10

Name

Function

VIPER113XSTR Datasheet(PDF) 5 Page - STMicroelectronics