Даташит viper22a pdf ( datasheet )

VIPer22ADIP

VIPer22AS

LOW POWER OFF LINE SMPS PRIMARY SWITCHER
TYPICAL POWER CAPABILITY
Mains type
SO-8
European
(195 — 265 Vac)
12 W
US / Wide range
(85 — 265 Vac)
7W
DIP-8
20 W
12 W

n FIXED 60 KHZ SWITCHING FREQUENCY

n 9V TO 38V WIDE RANGE VDD VOLTAGE

n CURRENT MODE CONTROL

n AUXILIARY UNDERVOLTAGE LOCKOUT

WITH HYSTERESIS

n HIGH VOLTAGE START UP CURRENT

SOURCE

n OVERTEMPERATURE, OVERCURRENT AND

OVERVOLTAGE PROTECTION WITH
AUTORESTART
DESCRIPTION
The VIPer22A combines a dedicated current mode
PWM controller with a high voltage Power
BLOCK DIAGRAM
SO-8
DIP-8
PACKAGE
SO-8
DIP-8
ORDER CODES
TUBE
T&R

VIPer22AS VIPer22AS13TR

VIPer22ADIP —

MOSFET on the same silicon chip. Typical
applications cover off line power supplies for
battery charger adapters, standby power supplies
for TV or monitors, auxiliary supplies for motor
control, etc. The internal control circuit offers the
following benefits:

– Large input voltage range on the VDD pin

accommodates changes in auxiliary supply
voltage. This feature is well adapted to battery
charger adapter configurations.
– Automatic burst mode in low load condition.
– Overvoltage protection in hiccup mode.
DRAIN
REGULATOR
INTERNAL
SUPPLY
VDD
FB
_

8/14.5V +

+

42V _

ON/OFF
60kHz
OSCILLATOR
OVERTEMP.
DETECTOR
S

R1 FF Q

R2 R3 R4
PWM
LATCH
OVERVOLTAGE

R LATCH

S FF Q
BLANKING
+

_ 0.23 V

1 kΩ

230 Ω

SOURCE
September 2002
1/15

VIPer22ADIP / VIPer22AS
PIN FUNCTION
Name
Function
Power supply of the control circuits. Also provides a charging current during start up thanks to a high
voltage current source connected to the drain. For this purpose, an hysteresis comparator monitors the

VDD voltage and provides two thresholds:

VDD — VDDon: Voltage value (typically 14.5V) at which the device starts switching and turns off the start up

current source.

— VDDoff: Voltage value (typically 8V) at which the device stops switching and turns on the start up current

source.
SOURCE Power MOSFET source and circuit ground reference.
Power MOSFET drain. Also used by the internal high voltage current source during start up phase for

DRAIN charging the external VDD capacitor.

Feedback input. The useful voltage range extends from 0V to 1V, and defines the peak drain MOSFET
FB current. The current limitation, which corresponds to the maximum drain current, is obtained for a FB pin
shorted to the SOURCE pin.
CURRENT AND VOLTAGE CONVENTIONS

IDD ID

VDD

IFB

FB
VDD
CONTROL

VFB VIPer22A

DRAIN
SOURCE

VD

CONNECTION DIAGRAM

SOURCE 1

SOURCE 2

FB 3

VDD 4

8 DRAIN

7 DRAIN

6 DRAIN

5 DRAIN

SO-8

SOURCE 1

SOURCE 2

FB 3

VDD 4

8 DRAIN

7 DRAIN

6 DRAIN

5 DRAIN

DIP8
2/15

VIPer22ADIP / VIPer22AS
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit

VDS(sw) Switching Drain Source Voltage (Tj=25 … 125°C)

(See note 1)
-0.3 … 730
V

VDS(st) Start Up Drain Source Voltage (Tj=25 … 125°C)

(See note 2)
-0.3 … 400
V

ID Continuous Drain Current

Internally limited
A

VDD Supply Voltage

0 … 50
V

IFB Feedback Current

3 mA

VESD

Electrostatic Discharge:

Machine Model (R=0Ω; C=200pF)

Charged Device Model
200 V
1.5 kV

Tj Junction Operating Temperature

Internally limited

°C

Tc Case Operating Temperature

-40 to 150

°C

Tstg Storage Temperature

-55 to 150

°C

Note: 1. This parameter applies when the start up current source is off. This is the case when the VDD voltage has reached VDDon and

remains above VDDoff.

2. This parameter applies when the start up current source is on. This is the case when the VDD voltage has not yet reached VDDon

or has fallen below VDDoff.

THERMAL DATA
Symbol
Parameter
Max Value
Unit
Thermal Resistance Junction-Pins for :
Rthj-case SO-8
DIP-8
25 °C/W
15
Thermal Resistance Junction-Ambient for :
Rthj-amb SO-8
DIP-8
(See note 1)
(See note 1)
55
45
°C/W

Note: 1. When mounted on a standard single-sided FR4 board with 200 mm² of Cu (at least 35 µm thick) connected to all DRAIN pins.

ELECTRICAL CHARACTERISTICS (Tj=25°C, VDD=18V, unless otherwise specified)

POWER SECTION
Symbol
Parameter
Test Conditions
Min. Typ.

BVDSS Drain-Source Voltage

ID=1mA; VFB=2V

730

IDSS Off State Drain Current VDS=500V; VFB=2V; Tj=125°C

RDSon

Static Drain-Source
On State Resistance

ID=0.4A

ID=0.4A; Tj=100°C

15

tf Fall Time

ID=0.2A; VIN=300V

(See fig.1)
(See note 1)
100

tr Rise Time

ID=0.4A; VIN=300V

(See fig.1)
(See note 1)
50

Coss Drain Capacitance

VDS=25V

40
Note: 1. On clamped inductive load
Max.
0.1
17
31
Unit
V
mA
Ω
ns
ns
pF
3/15