IC OFFLINE SWIT PWM SMPS 8SOIC

VIPER22ASTR-E

Manufacturer Part NumberVIPER22ASTR-E
DescriptionIC OFFLINE SWIT PWM SMPS 8SOIC
ManufacturerSTMicroelectronics
SeriesVIPER™
VIPER22ASTR-E datasheet
 


Specifications of VIPER22ASTR-E

Output IsolationIsolatedFrequency Range54 ~ 66kHz
Voltage - Input8 ~ 50 VVoltage - Output730V
Power (watts)7WOperating Temperature25°C ~ 125°C
Package / Case8-SOIC (0.154", 3.90mm Width)Dc1036
For Use With497-9049 - BOARD EVAL BASED VIPER22ASTR-E497-8215 - BOARD EVAL BASED ON VIPER22A497-5864 - EVAL BOARD DUAL OUTPUT VIPER22A497-5071 - EVAL BOARD DIMMABLE HB PWR LEDVIPER22-LED-EV - VIPER LED POWER SUPPLYLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-8167-2
VIPER22ASTR-E
  
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Features
Fixed 60 kHz switching frequency
9 V to 38 V wide range V
DD
Current mode control
Auxiliary undervoltage lockout with hysteresis
High voltage start-up current source
Overtemperature, overcurrent and overvoltage
protection with auto-restart
Table 1.
Typical power capability
Mains type
European (195 - 265 Vac)
US / wide range (85 - 265 Vac)
Description
The VIPer22A-E combines a dedicated current
mode PWM controller with a high voltage power
MOSFET on the same silicon chip.
Figure 1.
Block diagram
REGULATOR
INTERNAL
SUPPLY
_
VDD
8/14.5V
+
+
_
42V
FB
November 2010
VIPer22ADIP-E, VIPer22AS-E
Low power OFF-line SMPS primary switcher
voltage
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 V
SO-8
DIP-8
accommodates changes in auxiliary supply
voltage. This feature is well adapted to battery
12 W
20 W
charger adapter configurations.
7 W
12 W
Automatic burst mode in low load condition.
Overvoltage protection in HICCUP mode.
ON/OFF
60kHz
OSCILLATOR
PWM
S
LATCH
OVERTEMP.
FF
R1
Q
DETECTOR
R2
R3
R4
BLANKING
OVERVOLTAGE
LATCH
R
FF
S
Q
Doc ID 12050 Rev 2
VIPer22A-E
SO-8
DIP-8
pin
DD
DRAIN
+
_
0.23 V
230 Ω
1 kΩ
SOURCE
www.st.com
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VIPER22ASTR-E Summary of contents

  • Page 1

    Features ■ Fixed 60 kHz switching frequency ■ wide range V DD ■ Current mode control ■ Auxiliary undervoltage lockout with hysteresis ■ High voltage start-up current source ■ Overtemperature, overcurrent and overvoltage protection with ...

  • Page 2

    Contents Contents 1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 3

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 1 Electrical data 1.1 Maximum ratings Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at ...

  • Page 4

    Electrical characteristics 2 Electrical characteristics ° unless otherwise specified J DD Table 4. Power section Symbol Parameter BV Drain-source voltage DSS OFF state drain I DSS current Static drain-source r DS(on) ON state ...

  • Page 5

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Table 6. Oscillation section Symbol Parameter Oscillator frequency F OSC total variation Table 7. PWM comparator section Symbol Parameter Peak current I Dlim limitation I I shutdown current FBsd FB ...

  • Page 6

    Pin connections and function 3 Pin connections and function Figure 2. Pin connection SOURCE 1 SOURCE VDD 4 Figure 3. Current and voltage conventions Table 10. Pin function Pin Name Power supply of the control circuits. Also ...

  • Page 7

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 4 Operations 4.1 Rectangular U-I output characteristics Figure 4. Rectangular U-I output characteristics for battery charger complete regulation scheme can achieve combined and accurate output characteristics. Figure 4. presents a secondary ...

  • Page 8

    Operations 4.2 Wide range of V The V pin voltage range extends from This feature offers a great flexibility in DD design to achieve various behaviors. In chosen to supply the device with two benefits: ...

  • Page 9

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E The Power MOSFET delivers a sense current I R2 receives this current and the current coming from the FB pin. The voltage across R2 is then compared to a fixed reference voltage of about 0.23 V. The ...

  • Page 10

    Operations Figure 6. I transfer function then possible to build the total DC transfer function between I Figure 6 on page 10 associated minimum turn on time. This imposes a minimum drain current under which the device ...

  • Page 11

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 4.4 Startup sequence Figure 7. Startup sequence This device includes a high voltage start up current source connected on the drain of the device. As soon as a voltage is applied on the input of the converter, ...

  • Page 12

    Operations 4.5 Overvoltage threshold An overvoltage detector on the V exceeds V . This is illustrated in DDovp overvoltage event. Note that this event is only latched for the time needed and then the device resumes ...

  • Page 13

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 5 Operation pictures Figure 9. Rise and fall time 90 10% Figure 10. Start-up V Figure 11. Restart duty-cycle DDon V DDoff current DD ...

  • Page 14

    Operation pictures Figure 12. Peak drain current vs feedback current Dpeak 1/F OSC The drain current limitation is obtained for VFB = 0 V, and a negative current is drawn from the FB pin. See the Application ...

  • Page 15

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Figure 14. Switching frequency vs temperature Figure 15. Current limitation vs temperature Doc ID 12050 Rev 2 Operation pictures 15/21 ...

  • Page 16

    Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...

  • Page 17

    VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Table 11. DIP-8 mechanical data Dim Package Weight Figure 16. Package dimensions Databook (mm.) Min. Nom. 0.38 2.92 3.30 0.36 0.46 1.14 1.52 0.20 ...

  • Page 18

    Package mechanical data Table 12. SO-8 mechanical data Dim ddd Figure 17. Package dimensions 18/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Databook (mm. Min. Nom. 1.35 0.10 1.10 0.33 0.19 4.80 ...

  • Page 19

    ... VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E 7 Order codes Table 13. Order codes Order codes VIPER22ASTR-E VIPer22AS-E VIPer22ADIP-E Package SO-8 SO-8 DIP-8 Doc ID 12050 Rev 2 Order codes Packaging Tape and reel Tube Tube 19/21 ...

  • Page 20

    Revision history 8 Revision history Table 14. Document revision history Date 09-Feb-2006 25-Nov-2010 20/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Revision 1 Initial release. 2 Updated Table 11. Doc ID 12050 Rev 2 Changes ...

  • Page 21

    ... VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...