IC OFFLINE SWIT PWM POWERSO10

VIPER53ESPTR-E

Manufacturer Part NumberVIPER53ESPTR-E
DescriptionIC OFFLINE SWIT PWM POWERSO10
ManufacturerSTMicroelectronics
SeriesVIPER™
VIPER53ESPTR-E datasheet
 

Specifications of VIPER53ESPTR-E

Output IsolationIsolatedFrequency Range93 ~ 300kHz
Voltage - Input8.4 ~ 19 VVoltage - Output620V
Power (watts)40WOperating Temperature25°C ~ 125°C
Package / CasePowerSO-10 Exposed Bottom PadOn Resistance (max)1.7 Ohms
Supply Voltage (max)19 VSupply Voltage (min)2.6 V
Maximum Operating Temperature+ 150 CMinimum Operating Temperature- 40 C
Mounting StyleSMD/SMTNumber Of SwitchesSingle
Off Isolation (typ)8.4 VOperating Temperature (max)150C
Operating Temperature (min)-40CPin Count10
MountingSurface MountPackage TypePowerSO
Screening LevelAutomotiveFor Use With497-8435 - BOARD EVAL FOR VIPER53 28W497-6458 - BOARD EVAL BASED ON VIPER53-E497-6262 - BOARD REF SGL VIPER53 90-264VAC497-5866 - EVAL BOARD 24W NEG OUT VIPER53E497-5865 - EVAL BOARD 24W POS OUT VIPER53E497-4933 - BOARD PWR SUPPLY 24W OUTPUT VIPE
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names497-5772-2
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Features
Switching frequency up to 300kHz
Current mode control with adjustable limitation
Soft start and shut-down control
Automatic burst mode in standby condition
(“Blue Angel“ compliant )
Undervoltage lockout with Hysteresis
Integrated start-up current source
Over-temperature protection
Overload and short-circuit control
Overvoltage protection
In compliance with the 2002/95/EC European
Directive
Description
The VIPer53E combines an enhanced current
mode PWM controller with a high voltage
MDMesh Power MOSFET in the same package.
Block diagram
ON/OFF
UVLO
COMPARATOR
VDD
8.4/
11.5V
8V
125k
4V
OVERVOLTAGE
COMPARATOR
18V
TOVL
January 2006
PowerSO-10
Typical applications cover offline power supplies
with a secondary power capability ranging up to
30W in wide range input voltage, or 50W in single
European voltage range and DIP-8 package and
40W in wide range input voltage, or 65W in single
European
package, with the following benefits:
– Overload and short-circuit events
controlled by feedback monitoring and
delayed device reset;
– Efficient standby mode by enhanced pulse
skipping.
– Integrated start-up current source is
disabled during normal operation to reduce
the input power.
OSC
OSCILLATOR
PWM
LATCH
OVERTEMP.
S
R1
DETECTOR
FF
Q
R2
R3 R4 R5
150/400ns
BLANKING
DocRev1
VIPer53EDIP - E
VIPer53ESP - E
OFF-line Primary Switch
DIP-8
voltage
range
and
PowerSO-10
BLANKING TIME
SELECTION
1V
PWM
H
COMPARATOR
0.5V
COMP
CURRENT
AMPLIFIER
STANDBY
Vcc
COMPARATOR
0.5V
I
C OMP
OVERLOAD
COMPARATOR
4.4V
4.5V
COMP
SOURCE
DRAIN
1/31
www.st.com
31

VIPER53ESPTR-E Summary of contents

  • Page 1

    Features Switching frequency up to 300kHz Current mode control with adjustable limitation Soft start and shut-down control Automatic burst mode in standby condition (“Blue Angel“ compliant ) Undervoltage lockout with Hysteresis Integrated start-up current source Over-temperature protection Overload and short-circuit ...

  • Page 2

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

  • Page 3

    ... 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. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 1. ...

  • Page 4

    Electrical characteristics 2 Electrical characteristics T = 25° 13V, unless otherwise specified J DD Table 3. Power section Symbol Parameter Drain-Source BV DSS Voltage Off State Drain I DSS Current Static Drain-Source R DS(on) On State Resistance t ...

  • Page 5

    VIPer53EDIP - E / VIPer53ESP - E Table 5. Supply Section Symbol Drain Voltage Starting V DSstart Threshold I Startup Charging Current DDch1 I Startup Charging Current V DDch2 Startup Charging Current I DDchoff in Thermal Shutdown Operating Supply Current ...

  • Page 6

    Electrical characteristics Table 6. Pwm Comparator Section Symbol Parameter t Minimum On Time ONmin2 V COMP V COMPoff Threshold V V COMPhi COMP I COMP Pull Up Current V COMP 1. In order to ensure a correct stability of the ...

  • Page 7

    VIPer53EDIP - E / VIPer53ESP - E 3 Pin connections and function Figure 1. Pin connection (top view) COMP 1 OSC 2 3 SOURCE 4 SOURCE Figure 2. Current and voltage conventions Table 10. Pin function Pin Name Power supply ...

  • Page 8

    Rectangular U-I Output characteristics 4 Rectangular U-I Output characteristics Figure 3. Off Line Power Supply With Optocoupler Feedback 8/ VDD DRAIN OSC CONTROL COMP TOVL SOURCE ...

  • Page 9

    VIPer53EDIP - E / VIPer53ESP - E 5 Secondary Feedback Configuration Example The secondary feedback is implemented through an optocoupler driven by a programmable zener diode (TL431 type) as shown in The optocoupler is connected in parallel with the compensation ...

  • Page 10

    Current Mode Topology 6 Current Mode Topology The VIPer53E implements the conventional current mode control method for regulating the output voltage. This kind of feedback includes two nested regulation loops: The inner loop controls the peak primary current cycle by ...

  • Page 11

    VIPer53EDIP - E / VIPer53ESP - E 7 Standby Mode The device offers a special feature to address the low load condition. The corresponding function described hereafter consists of reducing the switching frequency by going into burst mode, with the ...

  • Page 12

    Standby Mode Where Ip(V COMPbl2 voltage of V COMPbl burst mode does not depend on the input voltage. The standby frequency F The ratio between the nominal and standby switching frequencies can be as high as 4, depending on the ...

  • Page 13

    VIPer53EDIP - E / VIPer53ESP - E 8 High Voltage Start-up Current Source An integrated high voltage current source provides a bias current from the DRAIN pin during the start-up phase. This current is partially absorbed by internal control circuits ...

  • Page 14

    High Voltage Start-up Current Source Figure 5. Start-up Waveforms 14/ DD1 I DDch2 I DDch1 V tSS DD V DDreg V DDst V DDsd tSU DocRev1 VIPer53EDIP - E / VIPer53ESP - ...

  • Page 15

    VIPer53EDIP - E / VIPer53ESP - E 9 Short-Circuit and Overload Protection A V threshold of about 4.4V has been implemented on the COMP pin. When V COMPovl goes above this level, the capacitor connected on the TOVL pin begins ...

  • Page 16

    Regulation Loop Stability 10 Regulation Loop Stability The complete converter open loop transfer function can be built from both power cell and the feedback network transfer functions. A theoretical example can be seen in page 22 for a discontinuous mode ...

  • Page 17

    VIPer53EDIP - E / VIPer53ESP - E The lowest load gives another condition for stability: The frequency F encounter the third order slope generated by the load pole, the R1-C1 network on the COMP pin and the R2-C2 network at ...

  • Page 18

    Special Recommendations 11 Special Recommendations 10nF capacitor (minimum value: 8nF) should always be connected to the COMP pin to ensure correct stability of the internal current source In order to improve the ruggedness of the device versus eventual drain overvoltages, ...

  • Page 19

    VIPer53EDIP - E / VIPer53ESP - E 12 Software Implementation All the above considerations and some others are included included in ST design software which provides all of the needed components around the VIPer device for specified output configurations, and ...

  • Page 20

    Operation pictures 13 Operation pictures Figure 6. Rise and Fall time 90 10% Figure 7. Overloaded Event 20/31 t VDD OSC t rv COMP Normal Abnormal operation operation V DDon V ...

  • Page 21

    VIPer53EDIP - E / VIPer53ESP - E Figure 8. Complete Converter Transfer Function 1 ---- ----- ---- ---- ----- ---- ----- ---- ---- -- - OUT 3.2 ---- ----- ---- ---- --- - P ...

  • Page 22

    Operation pictures Figure 9. Start- DD0 V DDhyst I DDch2 I DDch1 Figure 11. Thermal Shutdown HYST DDon V COMP 22/31 current Figure 10. Blanking Time ...

  • Page 23

    VIPer53EDIP - E / VIPer53ESP - E Figure 13. Shutdown Action V OSC V OSChi V OSClo V COMP V COMPoff I D Figure 15. Oscillator Schematic Figure 14. Comp Pin Gain and Offset I Dpeak t I Dlim I ...

  • Page 24

    Operation pictures The switching frequency settings shown on the graphic here below is valid within the following boundaries: R > 300kHz SW Figure 16. Oscillator Settings Frequency (kHz) Figure 17. Typical Frequency Variation vs. Junction Temperature ...

  • Page 25

    VIPer53EDIP - E / VIPer53ESP - E Figure 18. Typical Current Limitation vs. Junction Temperature Normalised IDlim 1.04 1.02 0.98 0. Temperature (°C) DocRev1 Operation pictures 60 80 100 120 25/31 ...

  • Page 26

    Mechanical Data 14 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 ...

  • Page 27

    VIPer53EDIP - E / VIPer53ESP - E Table 11. DIP8 Mechanical Data Ref Package Weight Figure 19. Package Dimensions Dimensions Databook (mm) Nom. Min 0.38 2.92 3.30 ...

  • Page 28

    Mechanical Data Table 12. PowerSO-10 Mechanical Data Ref Figure 20. Package Dimensions 28/31 VIPer53EDIP - E / VIPer53ESP - E Dimensions Databook (mm) ...

  • Page 29

    ... VIPer53EDIP - E / VIPer53ESP - E 15 Order codes Table 13. Order codes Part Number VIPer53ESPTR - E VIPer53ESP - E VIPer53EDIP - E Package PowerSO-10 PowerSO-10 DIP-8 DocRev1 Order codes Shipment Tape and reel Tube Tube 29/31 ...

  • Page 30

    Revision history 16 Revision history Table 14. Document revision history Date 12-Jan-2006 30/31 Revision 1 Initial release. DocRev1 VIPer53EDIP - E / VIPer53ESP - E Changes ...

  • Page 31

    ... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...