VIPER0PHD datasheet(16/36 Pages) STMICROELECTRONICS

Part #	VIPER0PHD

Description	Zero-power off-line high voltage converter

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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16 / 36 page

General description

VIPer0P

16/36

DocID028423 Rev 2

General description

4.1

Block diagram

Figure 24: Block diagram

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)

10 W

12 W

6 W

7 W

Notes:

(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 heatsinking.

4.3

Primary MOSFET

The primary switch is implemented with an avalanche rugged N-channel MOSFET with

minimum breakdown voltage 800 V, VBVDSS, and maximum on-

resistance of 20 Ω, RDS(on).

The sense-FET is embedded and it allows a virtually lossless current sensing. The startup-

MOSFET is embedded and it allows the HV voltage startup operation.

The MOSFET gate driver controls the gate current during both turn-on and turn-off in order

to minimize EMI.

VIPER0PHD Datasheet(PDF) 16 Page - STMicroelectronics