IC OFFLINE SWIT PWM SMPS 8DIP

VIPER22ADIP-E

Manufacturer Part NumberVIPER22ADIP-E
DescriptionIC OFFLINE SWIT PWM SMPS 8DIP
ManufacturerSTMicroelectronics
SeriesVIPER™
TypePulse Width Modulator Controller
VIPER22ADIP-E datasheets
 

Specifications of VIPER22ADIP-E

Output IsolationIsolatedFrequency Range54 ~ 66kHz
Voltage - Input8 ~ 50 VVoltage - Output730V
Power (watts)12WOperating Temperature25°C ~ 125°C
Package / Case8-DIP (0.300", 7.62mm)Output Voltage38 V
Output Power12 WInput Voltage0 V to 50 V
Switching Frequency60 KHzOperating Temperature Range- 40 C to + 150 C
Mounting StyleThrough HoleCurrent, Supply4.5 mA
Frequency, Oscillator60 kHzPackage TypeDIP-8
Regulator TypeSwitchingResistance, Thermal, Junction To Case15 °C/W
Temperature, Operating, Range-40 to +150 °CTime, Fall100 ns
Time, Rise50 nsVoltage, Supply18 V
Supply Voltage38VDigital Ic Case StyleDIP
No. Of Pins8No. Of Regulated Outputs1
Filter TerminalsDIPRohs CompliantYes
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 names497-7694-5
VIPER22ADIP-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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VIPER22ADIP-E Summary of contents

  • Page 1

    ... 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: ...

  • Page 2

    ... Rectangular U-I output characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 Wide range of VDD voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 Feedback pin principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.4 Startup sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.5 Overvoltage threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Operation pictures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Doc ID 12050 Rev 2 ...

  • 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 these or any other conditions above those indicated in the operating sections of this specification is not implied ...

  • Page 4

    ... DDoff shutdown threshold V start- DDon threshold V threshold DD V DDhyst hysteresis V overvoltage DD V DDovp threshold 1. These test conditions obtained with a resistive load are leading to the maximum conduction time of the device. 4/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Test conditions mA 500 125 ° 0 0 100 ° ...

  • 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 FB pin input R FB impedance Current sense delay turn-OFF t Blanking time b Minimum turn-ON t ONmin time Table 8 ...

  • Page 6

    ... V Feedback input. The useful voltage range extends from and defines the FB peak drain MOSFET current. The current limitation, which corresponds to the maximum drain current, is obtained for a FB pin shorted to the SOURCE pin. 6/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E DRAIN 8 DRAIN 7 DRAIN ...

  • 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 feedback through an optocoupler driven by a TSM101. This device offers two operational amplifiers and a voltage reference, thus allowing the regulation of both output voltage and current ...

  • Page 8

    ... A feedback pin controls the operation of the device. Unlike conventional PWM control circuits which use a voltage input (the inverted input of an operational amplifier), the FB pin is sensitive to current. Figure 5. Internal current control structure 8/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E voltage DD Figure 4 on page 7 Figure 5. presents the internal current mode structure. ...

  • 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 MOSFET is switched off when the following equation is reached: ...

  • Page 10

    ... This drain current depends on the primary inductance value of the transformer and the input voltage. Two cases may occur, depending on the value of this current versus the fixed 85 mA value, as described above. 10/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E I Dpeak I ...

  • 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, this start up current source is activated as long as V current source is switched OFF and the device begins to operate by turning on and off its main power MOSFET ...

  • Page 12

    ... Note that this event is only latched for the time needed and then the device resumes normal operation automatically. DDoff Figure 8. Overvoltage sequence DDovp V DDon V DDoff V DS 12/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E pin allows the VIPer22A to reset itself when V DD Figure 8. which shows the whole sequence of an Doc ID 12050 Rev reach ...

  • 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 DD0 V DDhyst V V DDoff DDon I DDch RST = -------------------------- - Doc ID 12050 Rev 2 Operation pictures << Coss VDD DRAIN FB CONTROL SOURCE VIPer22A V DD ≤ 400 V 100 V≤ ...

  • Page 14

    ... 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 section for further details. Figure 13. Thermal shutdown 14/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS 18V I 47nF FB VIPer22A V FB ⋅ FBsd ...

  • 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 at: www.st.com. ECOPACK trademark. 16/21 VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E Doc ID 12050 Rev 2 ® ...

  • 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 0.25 9.02 9.27 7.62 7.87 6.10 6.35 2.54 7.62 2.92 3.30 Gr. 470 Doc ID 12050 Rev 2 Package mechanical data Max ...

  • 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 3.80 1.27 5.80 0.25 0.40 8° (max.) Doc ID 12050 Rev 2 Max. 1.75 0.25 1.65 0.51 0.25 5 ...

  • 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. ...