Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsPMICsPMIC - AC/DC converter, offline switcher Buck, Flyback SSO 10

This is information on a product in full production.

March 2012 Doc ID 022794 Rev 1 1/28

VIPER06

Fixed-frequency VIPer™ plus family

Datasheet — production data

Features

■ 800 V avalanche rugged power section

■ PWM operation with frequency jittering for low

EMI

■ Operating frequency:

– 30 kHz for VIPER06Xx

– 60 kHz for VIPER06Lx

– 115 kHz for VIPER06Hx

■ No need for an auxiliary winding in low-power

applications

■ Standby power < 30 mW at 265 V

■

Limiting current with adjustable set point

■ On-board soft-start

■ Safe auto-restart after a fault condition

■ Hysteretic thermal shutdown

Applications

■ Replacement of capacitive power supplies

■ Home appliances

■ Power metering

■ LED drivers

Description

The VIPER06 is an offline converter with an 800 V

avalanche rugged power section, a PWM

controller, a user-defined overcurrent limit, open-

loop failure protection, hysteretic thermal

protection, soft startup and safe auto-restart after

any fault condition. The device is able to power

itself directly from the rectified mains, eliminating

the need for an auxiliary bias winding. Advanced

frequency jittering reduces EMI filter cost. Burst

mode operation and the device’s very low power

consumption both help to meet the standards set

by energy-saving regulations.

Figure 1. Typical application

DIP-7

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Summary of content (28 pages)

PAGE 1
VIPER06 Fixed-frequency VIPer™ plus family Datasheet — production data Features ■ 800 V avalanche rugged power section ■ PWM operation with frequency jittering for low EMI ■ Operating frequency: – 30 kHz for VIPER06Xx – 60 kHz for VIPER06Lx – 115 kHz for VIPER06Hx Figure 1.
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Contents VIPER06 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 Maximum ratings . . . . .
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VIPER06 Contents 17 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 18 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Block diagram 1 VIPER06 Block diagram Figure 2. Block diagram VDD SOFT START DRAIN SUPPLY & UVLO Internal Supply BUS & REFERENCE VOLTAGES HV_ON IDLIM LIM UVLO set-up THERMAL SHUTDOWN Oscillator OTP - VCOMPL IDDch BURST-MODE Logic + OCP Burst BURST TURN-ON LOGIC S LEB R Q + PWM OLP LOGIC - FB VREF_FB E/A + OTP RSENSE COMP 2 GND Typical power Table 1.
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VIPER06 3 Pin settings Pin settings Figure 3. Connection diagram (top view) DRAIN GND DRAIN VDD DRAIN LIM DRAIN FB DRAIN COMP DRAIN DRAIN AM11339v1 Note: The copper area for heat dissipation has to be designed under the DRAIN pins. Table 2. Pin description Pin Name Function 1 GND Connected to the source of the internal power MOSFET and controller ground reference. 2 2 VDD Supply voltage of the control section. This pin provides the charging current of the external capacitor.
PAGE 6
Electrical data VIPER06 4 Electrical data 4.1 Maximum ratings Table 3. Symbol Value Pin (DIP-7) Parameter Unit Min VDRAIN 7, 8 Drain-to-source (ground) voltage EAV 7, 8 IAR Max 800 V Repetitive avalanche energy (limited by TJ = 150 °C) 2 mJ 7, 8 Repetitive avalanche current (limited by TJ = 150 °C) 1 A IDRAIN 7, 8 Pulse drain current (limited by TJ = 150 °C) 2.5 A VCOMP 5 Input pin voltage -0.3 3.5 V VFB 4 Input pin voltage -0.3 4.8 V VLIM 3 Input pin voltage -0.
PAGE 7
VIPER06 4.3 Electrical data Electrical characteristics (TJ = -25 to 125 °C, VDD = 14 V (a) unless otherwise specified). Table 5. Power section Symbol VBVDSS IOFF RDS(on) COSS Table 6. Symbol Parameter Test condition Min Typ Max Unit Breakdown voltage IDRAIN = 1 mA, VCOMP = GND, TJ = 25 °C OFF state drain current VDRAIN = max rating, VCOMP = GND 60 μA IDRAIN = 0.2 A, TJ = 25 °C 32 Ω IDRAIN = 0.
PAGE 8
Electrical data Table 7. VIPER06 Controller section Symbol Parameter Test condition Min Typ Max Unit Error amplifier VREF_FB FB reference voltage 3.2 IFB_PULL UP Current pull-up GM Transconductance 3.3 3.4 V -1 μA 2 mA/V 0.
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VIPER06 Table 7.
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Typical electrical characteristics VIPER06 5 Typical electrical characteristics Figure 4. IDlim vs. TJ 1.04 Figure 5. ID l im/ ID l im@ 2 5°C 1.04 FOSC vs. TJ F O SC / F O SC @ 2 5°C 1.02 1.02 1.00 1.00 0.98 0.98 0.96 0.96 0.94 0.94 -50 0 50 100 TJ [°C] Figure 6. 1.020 150 0.92 -50 0 50 100 AM01145v1 AM01144v1 VDRAIN_START vs. TJ Figure 7. V D R A I N _ ST A R T / V D R A IN _ ST A R T @ 2 5°C 1.30 1.010 150 TJ [°C] HCOMP vs. TJ HC OM P / HC OM P@2 5°C 1.20 1.000 1.
PAGE 11
VIPER06 Typical electrical characteristics Figure 10. ICOMP vs. TJ Figure 11. Operating supply current (no switching) vs. TJ IC O M P / I C OM P@ 2 5°C ID D 0 / I D D 0 @ 2 5°C 1.08 1.08 1.04 1.04 1.00 1.00 0.96 0.96 0.92 0.92 0.88 0.88 0.84 0.84 0.80 -50 0 50 100 150 0.80 -50 0 50 100 150 TJ [°C] TJ [°C] AM01150v1 Figure 12. Operating supply current (switching) vs. TJ 1.10 AM01151v1 Figure 13. IDlim vs. RLIM I D D 1 / ID D 1@ 2 5°C 1.10 ID l im / ID lim@ 10 0 KOhm 1.
PAGE 12
Typical electrical characteristics VIPER06 Figure 16.
PAGE 13
VIPER06 Typical circuit Figure 17. Flyback converter (non-isolated output) Rin L1 1 AC IN 6 Din 2 - + 4 C2 C3 + + Rcl Ccl VOUT Dout 12 AC IN 3 6 Typical circuit D1 4 + Cout 10 Daux VIPer16 Rfb1 FB Rfb2 DRAIN VDD COMP C1 Rcomp1 CONTROL GND LIM Ccomp2 RLIM (optional) Ccomp1 AM01197v1 Figure 18.
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Typical circuit VIPER06 Figure 19. Flyback converter (isolated output without optocoupler) FUSE 1 AC IN TRANSF 2 - L1 + 4 D0 BRIDGE + C1 + C2 Rcl Ccl 3 AC IN 6 D2 Vout 12 Raux + D1 Daux 4 3 Cout 10 VIPer06 Rfbh CVDD FB CONTROL COMP Cfb Rfbl DRAIN VDD + . 1 GND LIM Rc Cp RLIM (optional) Cc AM01196v1 Figure 20.
PAGE 15
VIPER06 7 Power section Power section The power section is implemented with an N-channel power MOSFET with a breakdown voltage of 800 V min. and a typical RDS(on) of 32 Ω. It includes a SenseFET structure to allow virtually lossless current sensing and the thermal sensor. The gate driver of the power MOSFET is designed to supply a controlled gate current during both turn-ON and turn-OFF in order to minimize common-mode EMI.
PAGE 16
Oscillator 9 VIPER06 Oscillator The switching frequency is internally fixed at 30 kHz or 60 kHz or 115 kHz (respectively part numbers VIPER06Xx, VIPER06Lx and VIPER06Hx).
PAGE 17
VIPER06 FB pin and COMP pin The device can be used both in non-isolated and isolated topology. In non-isolated topology, the feedback signal from the output voltage is applied directly to the FB pin as the inverting input of the internal error amplifier having the reference voltage, VREF_FB, see Table 7 on page 8. The output of the error amplifier sources and sinks the current, ICOMP, respectively to and from the compensation network connected on the COMP pin.
PAGE 18
Burst mode VIPER06 Figure 23. COMP pin voltage versus IDRAIN I DRAIN IDlim IDlim_bm VCOMPL VCOMPH VCOMP AM01095v1 13 Burst mode When the voltage VCOMP drops below the threshold, VCOMPL, the power MOSFET is kept in the OFF state and the consumption is reduced to the IDD0 current, as reported on Table 6 on page 7.
PAGE 19
VIPER06 14 Automatic auto-restart after overload or short-circuit Automatic auto-restart after overload or short-circuit The overload protection is implemented automatically using the integrated up-down counter. Every cycle, it is incremented or decremented depending upon the current logic detection of the limit condition or not. The limit condition is the peak drain current, IDlim , given in Table 7 on page 8 or the one set by the user through the RLIM resistor, shown in Figure 13 on page 11.
PAGE 20
Open-loop failure protection 15 VIPER06 Open-loop failure protection If the power supply has been designed using flyback topology and the VIPER06 is supplied by an auxiliary winding, as shown in Figure 27 and Figure 28 on page 21, the converter is protected against feedback loop failure or accidental disconnections of the winding. The following description is applicable for the schematics of Figure 27 and Figure 28 on page 21, respectively the non-isolated flyback and the isolated flyback.
PAGE 21
VIPER06 Open-loop failure protection Figure 28.
PAGE 22
Package mechanical data 16 VIPER06 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® is an ST trademark. Table 8. DIP-7 mechanical data mm Dim. Typ Min A Max 5.33 A1 0.38 A2 3.30 2.92 4.95 b 0.46 0.36 0.56 b2 1.52 1.14 1.78 c 0.25 0.20 0.36 D 9.
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VIPER06 Package mechanical data Figure 29.
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Package mechanical data Table 9. VIPER06 SSO10 mechanical data Databook (mm.) Dim. Typ Min. A 24/28 Max 1.75 A1 0.10 0.25 A2 1.25 b 0.31 0.51 c 0.17 0.25 D 4.90 4.80 5 E 6 5.80 6.20 E1 3.90 3.80 4 e 1 h 0.25 0.50 L 0.40 0.
PAGE 25
VIPER06 Package mechanical data Figure 30. SSO10 package dimensions 8140761 rev.
PAGE 26
Order codes 17 VIPER06 Order codes Table 10.
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VIPER06 18 Revision history Revision history s Table 11. Document revision history Date Revision 08-Mar-2012 1 Changes Initial release.
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VIPER06 Please Read Carefully: 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.