VIPER22A STMicroelectronics, VIPER22A Datasheet

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VIPER22A

Manufacturer Part Number
VIPER22A
Description
Manufacturer
STMicroelectronics
Datasheet

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Features
Typical Power Capability
Block diagram
February 2006
US / Wide range (85 - 265 Vac)
Fixed 60kHZ Switching Frequency
9V to 38V Wide Range V
Current Mode Control
Auxiliary Undervoltage Lockout with Hysteresis
High Voltage Start-up Current Source
Overtemperature, Overcurrent and
Overvoltage Protection with Auto-Restart
European (195 - 265 Vac)
VDD
FB
Mains type
8/14.5V
42V
REGULATOR
INTERNAL
SUPPLY
_
+
+
_
DD
ON/OFF
Voltage
SO-8
12W
Low Power OFF-Line SMPS Primary Switcher
7W
S
OVERTEMP.
DETECTOR
FF
R
DIP-8
20W
12W
Q
OVERVOLTAGE
LATCH
Rev1
OSCILLATOR
R1
R2
60kHz
R3
FF
S
Description
The VIPer22A-E combines a dedicated current
mode PWM controller with a high voltage Power
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:
R4
Q
– Large input voltage range on the V
– Automatic burst mode in low load condition.
– Overvoltage protection in HICCUP mode.
LATCH
PWM
accommodates changes in auxiliary supply
voltage. This feature is well adapted to
battery charger adapter configurations.
BLANKING
SO-8
VIPer22ADIP - E
VIPer22AS - E
+
_
0.23 V
1 kΩ
DIP-8
230 Ω
SOURCE
DRAIN
DD
www.st.com
pin
1/20
20

Related parts for VIPER22A

VIPER22A Summary of contents

Page 1

... FB February 2006 Low Power OFF-Line SMPS Primary Switcher Voltage Description The VIPer22A-E combines a dedicated current mode PWM controller with a high voltage Power MOSFET on the same silicon chip. Typical applications cover off line power supplies SO-8 DIP-8 for battery charger adapters, standby power ...

Page 2

... Thermal Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Pin Connections and Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 Rectangular U-I Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 Wide Range of VDD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3 Feedback Pin Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.4 Startup sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.5 Overvoltage threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5 Operation pictures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2/20 VIPer22ADIP/ VIPer22AS - E Rev1 ...

Page 3

... VIPer22ADIP/ 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

... FB ( 0.5mA 50mA FB D (See Figure 10 on page 12) (See Figure 9, Figure 10 on page 12) (See Figure 9, Figure 10 on page 12)) (See Figure 9 on page 12) Rev1 VIPer22ADIP/ VIPer22AS - E Min. Typ. Max. Unit 730 V 0 Ω 31 100 Min. Typ. Max. Unit -1 mA ...

Page 5

... VIPer22ADIP/ VIPer22AS - E Table 5. Oscillation section Symbol Parameter Oscillator frequency F OSC total variation Table 6. PWM Comparator section Symbol Parameter Peak current I Dlim limitation I I Shutdown current (See FBsd FB FB Pin input R FB impedance Current sense delay turn-OFF t Blanking time ...

Page 6

... DD VDD CONTROL VIPer22A Pin Function DD : Voltage value (typically 14.5V) at which the device starts switching and turns : Voltage value (typically 8V) at which the device stops switching and turns on Rev1 VIPer22ADIP/ VIPer22AS - E SOURCE 1 8 SOURCE VDD 4 5 DIP DRAIN ...

Page 7

... VIPer22ADIP/ VIPer22AS - E 4 Operations 4.1 Rectangular U-I Output Characteristics Figure 3. Rectangular U-I output characteristics for battery charger complete regulation scheme can achieve combined and accurate output characteristics. Figure 3. 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

... The MOSFET is switched off when the following equation is reached: 8/20 Figure 4. presents the internal current mode structure. which is proportional to the main current Id. s ⋅ 0.23V + = Rev1 VIPer22ADIP/ VIPer22AS - E pin voltage may vary as much as DD ...

Page 9

... FB pin, and when the optocoupler is off (start up or short circuit), it can be assumed that the corresponding voltage is very close to 0V. For low drain currents, the formula (1) is valid as long as IFB satisfies internal threshold of the VIPer22A FBsd stop switching. This is represented on PWM COMPARATOR SECTION. Actually, as soon as the drain current is about 12% of Idlim, that is to say 85 mA, the device will enter a burst mode operation by missing switching cycles ...

Page 10

... This is illustrated also in the same figure in dashed lines. 10/20 is lower than V . When reaching V DD DDon . Note that during the real starting phase t Figure 6 capacitor, waiting for the auxiliary winding to provide DD Rev1 VIPer22ADIP/ VIPer22AS - E , the start up DDon , the device ss ...

Page 11

... Note that this event is only latched for the time needed and then the device resumes normal operation automatically. DDoff Figure 7. Overvoltage Sequence DDovp V DDon V DDoff V DS pin allows the VIPer22A to reset itself when V DD Figure 7. which shows the whole sequence of an Rev1 Operations DD to reach 11/20 ...

Page 12

... DD0 V DDhyst V V DDoff DDon I DDch 10µ RST = -------------------------- - Rev1 VIPer22ADIP/ VIPer22AS - << Coss VDD DRAIN FB CONTROL SOURCE VIPer22A 100 kHz sw VDD DRAIN FB CONTROL SOURCE 2V VIPer22A 300V 100V ...

Page 13

... VIPer22ADIP/ VIPer22AS - E Figure 11. 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 12. Thermal shutdown t FB 18V I 47nF FB VIPer22A V FB ⋅ ...

Page 14

... Operation pictures Figure 13. Switching frequency Vs. temperature Figure 14. Current Limitation vs. Temperature 14/20 VIPer22ADIP/ VIPer22AS - E Rev1 ...

Page 15

... VIPer22ADIP/ VIPer22AS - E 6 Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...

Page 16

... Mechanical Data Table 10. DIP-8 Mechanical Data Ref Package Weight Figure 15. Package Dimensions 16/20 Dimensions Databook (mm.) Nom. Min. 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 Rev1 VIPer22ADIP/ VIPer22AS - E Max. 5.33 4.95 0.56 1.78 0.36 10.16 8.26 7.11 10.92 3.81 ...

Page 17

... VIPer22ADIP/ VIPer22AS - E Table 11. SO-8 Mechanical Data Ref ddd Figure 16. Package Dimensions Dimensions Databook (mm. Nom. Min. 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 5.80 0.25 0.40 8° (max.) Rev1 Mechanical Data Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 6.20 0.50 1.27 0.1 17/20 ...

Page 18

... Order codes 7 Order codes Table 12. Order codes Part Number VIPER22ASTR-E VIPer22AS - E VIPer22ADIP - E 18/20 VIPer22ADIP/ VIPer22AS - E Package SO-8 SO-8 DIP-8 Rev1 Shipment Tape and Reel Tube Tube ...

Page 19

... VIPer22ADIP/ VIPer22AS - E 8 Revision history Table 13. Document revision history Date 09-Feb-2006 Revision 1 Initial release. Rev1 Revision history Changes 19/20 ...

Page 20

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 20/20 All other names are the property of their respective owners © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Rev1 VIPer22ADIP/ VIPer22AS - E ...

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