IC OFFLINE SWIT PWM CM POWERSO10

VIPER53SPTR-E

Manufacturer Part NumberVIPER53SPTR-E
DescriptionIC OFFLINE SWIT PWM CM POWERSO10
ManufacturerSTMicroelectronics
SeriesVIPER™
VIPER53SPTR-E datasheet
 


Specifications of VIPER53SPTR-E

Output IsolationIsolatedFrequency Range93 ~ 300kHz
Voltage - Input8.4 ~ 19 VVoltage - Output620V
Power (watts)40WOperating Temperature25°C ~ 125°C
Package / CasePowerSO-10 Exposed Bottom PadPower Switch FamilyVIPer53SP
Input Voltage0 to 19VPower Switch On Resistance900mOhm
Output Current1.6ANumber Of OutputsSingle
MountingSurface MountSupply Current9mA
Package TypePowerSOOperating Temperature (min)-40C
Operating Temperature (max)150COperating Temperature ClassificationAutomotive
Pin Count10On Resistance (max)0.9 Ohms
Maximum Operating Temperature+ 150 CMinimum Operating Temperature- 40 C
Mounting StyleSMD/SMTFor 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 VIPER53E497-4933 - BOARD PWR SUPPLY 24W OUTPUT VIPE
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names497-6173-2
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General features
European
Type
(195 - 265Vac)
DIP-8
50W
TM
65W
PowerSO-10
Features
Switching frequency up to 300kHz
Current limitation
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
HIgh voltage star-tup current source
Overtemperature protection
Overload and short-circuit control
Block diagram
UVLO
COMPARATOR
VDD
8.4/
11.5V
15V
ERROR
AMPLIFIER
OVERVOLTAGE
COMPARATOR
18V
November 2006
US / Wide range
(85 - 265 Vac)
30W
40W
PowerSO-10
Description
The VIPer53-E combines an enhanced current
mode PWM controller with a high voltage
MDMesh Power Mosfet in the same package.
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, with
the following benefits:
Overload and short circuit controlled by
feedback monitoring and delayed device reset.
Efficient standby mode by enhanced pulse
skipping.
Primary regulation or secondary loop failure
protection through high gain error amplifier.
OSC
ON/OFF
OSCILLAT OR
PW M
LATCH
OVERT EMP.
S
R1
DET ECT OR
FF
Q
R2
R3 R4 R5
150/400ns
BLANKING
STANDBY
COMPARATOR
0.5V
4V
4.35V
OVERLOAD
COMPARATOR
4.5V
Rev 1
VIPer53 - E
OFF-line primary switch
DIP-8
DRAIN
BLANKING TIME
SELECTION
1V
H
0.5V
COM P
CURRENT
PW M
AMPLIFIER
COMPARATOR
8V
125k
T OVL
COMP
SOURCE
www.st.com
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VIPER53SPTR-E Summary of contents

  • Page 1

    General features European Type (195 - 265Vac) DIP-8 50W TM 65W PowerSO-10 Features ■ Switching frequency up to 300kHz ■ Current limitation ■ Current mode control with adjustable limitation ■ Soft start and shut-down control ■ Automatic burst mode in ...

  • 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 BV Drain-source voltage I DSS Off state drain I DSS current Static drain-source R DS(on) On state resistance ...

  • Page 5

    VIPer53 - E Table 5. Supply section Symbol Drain voltage starting V DSstart threshold I Startup charging current DDch1 I Startup charging current DDch2 Startup charging current I DDchoff in thermal shutdown Operating supply current I DD0 not switching Operating ...

  • Page 6

    Electrical characteristics Table 7. PWM comparator section Symbol Parameter H V COMP COMP V V COMPos COMP Peak drain current I Dlim limitation Drain current I Dmax capability Current sense delay Turn-Off V COMP V COMPbl change ...

  • Page 7

    VIPer53 - 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 V 8 TOVL 7 VDD DRAIN DIP ...

  • Page 8

    Pin connections and function Table 10. Pin function Pin Name Power supply of the control circuits. Also provides the charging current of the external capacitor during start-up. The functions of this pin are managed by four threshold voltages: - VDDon: ...

  • Page 9

    VIPer53 - E 4 Operation pictures Figure 3. Rise and fall time 90 10% Figure 4. Overloaded event t VDD OSC 15V t rv TOVL Normal Abnormal operation operation V DDon ...

  • Page 10

    Operation pictures Figure 5. Start- DD0 V DDhyst I DDch2 I DDch1 Figure 7. Thermal shutdown HYST DDon V COMP 10/36 current Figure ...

  • Page 11

    VIPer53 - E Figure 9. Shutdown action V OSC V OSChi V OSClo V COMP V COMPoff I D Figure 11. Output characteristics I COMP I COMPhi 0 I COMPlo Figure 10. Comp pin gain and offset I Dpeak t ...

  • Page 12

    Operation pictures Figure 12. Oscillator schematic The switching frequency settings shown on the graphic here below is valid within the following boundaries: R > 300kHz SW Figure 13. Oscillator settings Frequency (kHz) 12/36 Vcc VDD Rt ...

  • Page 13

    VIPer53 - E Figure 14. Error amplifier test cpfiguration This configuration is for test purpose only. In order to insure a correct stability of the error amplifier, a capacitor of 10nF (minimum value: 8nF) should be always connected between COMP ...

  • Page 14

    Operation pictures Figure 16. Typical frequency variation vs. junction temperature Normalised Frequency Figure 17. Typical current limitation vs. junction temperature Normalised IDlim 1.04 1.02 0.98 0.96 14/36 1.04 1.02 1 0.98 0.96 - Temperature (°C) 1 -20 ...

  • Page 15

    VIPer53 - E 5 Primary regulation configuration example Figure 18. Off line power supply with auxiliary supply feedback The schematic on amplifier of the device in a primary feedback configuration. The primary auxiliary ...

  • Page 16

    Primary regulation configuration example The switching frequency can be set to any value through the choice of R3 and C5. This allows to optimize the efficiency of the converter by adopting the best compromise between switching losses, EMI (Lower with ...

  • Page 17

    VIPer53 - E 6 Secondary feedback configuration example Figure 19. Off line power supply with optocoupler feedback When a more accurate output voltage is needed, the way is to monitor it directly ...

  • Page 18

    Secondary feedback configuration example Since the dynamic characteristics of the converter are set on the secondary side through components associated to U3, the compensation network has only a role of gain stabilization for the optocoupler, and its value can be ...

  • Page 19

    VIPer53 - E 7 Current mode topology The VIPer53-E 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 20

    Standby mode 8 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 following benefits: – It reduces ...

  • Page 21

    VIPer53 - E Equation 3 Where Ip(V COMPbl voltage of V COMPbl Note: The power point PSTBY where the converter is going into burst mode does not depend on the input voltage. The standby frequency F Equation 4 The ratio ...

  • Page 22

    High voltage Start-up current source 9 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 in standby ...

  • Page 23

    VIPer53 - E Figure 21. Start-up waveforms DD1 I DDch2 I DDch1 V tSS DD V DDreg V DDst V DDsd tSU High voltage Start-up current source t t 23/36 ...

  • Page 24

    Short-circuit and overload protection 10 Short-circuit and overload protection A V threshold of about 4.35V has been implemented on the COMP pin. When COMPovl V goes above this level, the capacitor connected on the TOVL pin begins to charge. COMP ...

  • Page 25

    VIPer53 - E 11 Transconductance error amplifier The VIPer53-E includes a transconductance error amplifier. Transconductance Gm is the change in output current I Equation 8 The output impedance Z Equation 9 This last equation shows that the open loop gain ...

  • Page 26

    Transconductance error amplifier optocoupler, the internal error amplifier is fully used for regulation). A typical schematic corresponding to this situation can be seen on The transfer function of the power cell is represented as G(s) in which depends on the ...

  • Page 27

    VIPer53 - E The lowest load gives another condition for stability: The frequency F the second order slope generated by the load pole and the integrator part of the error amplifier. This condition can be met by adjusting the C ...

  • Page 28

    Transconductance error amplifier Figure 23. Typical transfer functions 28/36 Gain (dB - 100 1k Frequency (Hz) Phase (°) 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 1 10 ...

  • Page 29

    VIPer53 - E Figure 24. Complete converter transfer function G(S) 1 ---------------------------------------------- - OUT 1 ---------------------------------------------- - OUT 1 F(S) --------------------------------------------------------------------------- - 2 R COMP 1 F(S).G( Transconductance error amplifier ...

  • Page 30

    Special recommendations 12 Special recommendations As steted in the error amplifier section, a capacitor of 10nF capacitor (minimum value: 8nF) should always be connected to the COMP pin to ensure correct stability of the internal error amplifier Figure 18, In ...

  • Page 31

    VIPer53 - E 14 Package 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 ...

  • Page 32

    Package mechanical data Table 11. DIP8 mechanical data Ref Package Weight Figure 25. Package dimensions 32/36 Dimensions Databook (mm) Nom. Min 0.38 2.92 3.30 0.36 0.46 1.14 ...

  • Page 33

    VIPer53 - E Table 12. PowerSO-10 mechanical data Ref Figure 26. Package dimensions Dimensions Databook (mm) Nom. Min 3.35 0.00 0.40 0.35 9.40 ...

  • Page 34

    ... Order codes 15 Order codes Table 13. Order codes Part Number VIPer53DIP-E VIPer53SP-E VIPer53SPTR - E 34/36 Package DIP-8 PowerSO-10 PowerSO-10 VIPer53 - E Shipment Tube Tube Tape and reel ...

  • Page 35

    VIPer53 - E 16 Revision history Table 14. Revision history Date 13-Nov-2006 Revision 1 Initial release. Revision history Changes 35/36 ...

  • Page 36

    ... 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. ...