EVLVIP15L-5WSB

VIPER15 Off-line high voltage converters Features ■ 800 V avalanche rugged power section ■ Quasi-resonant (QR) control for valley switching operation ■ Standby power < 50 mW at 265 Vac ■ Limiting current with adjustable set point ■ Adjustable and accurate overvoltage protection ■ On-board soft-start ■ Safe auto-restart after a fault condition ■ Hysteretic thermal shutdown The device is an off-line converter with an 800 V rugged power section, a PWM control, double levels of overcurrent protection, overvoltage and overload protections, hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal. Burst mode operation and device very low consumption helps to meet the standby energy saving regulations. The quasiresonant feature reduces EMI filter cost. Brownout and brown-in function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage start-up circuit is embedded in the device. t e l o ) (s Adapters for PDA, camcorders, shavers, cellular phones, cordless phones, videogames ■ Auxiliary power supply for LCD/PDP TV, monitors, audio systems, computer, industrial systems, LED driver, No el-cap LED driver, utility power meter ■ SMPS for set-top boxes, DVD players and recorders, white goods t c u s b O Figure 1. b O Typical topology  let so u d o r P e ■ P e DIP-7 Description Applications d o r ) s ( ct SO16 narrow SO-16 '&,QSXW9ROWDJH '&2XWSXW9ROWDJH  %5 '5$,1  6)0%2 )% =&' 9'' *1'  Table 1. !-V Device summary Order codes Package Packaging VIPER15LN / VIPER15HN DIP-7 Tube VIPER15HD / VIPER15LD Tube SO16 narrow VIPER15HDTR / VIPER15LDTR August 2010 Tape and reel Doc ID 15455 Rev 5 1/40 www.st.com 40 Contents VIPER15 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ) s ( ct 4.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 u d o r P e 5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Typical circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Operation description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 t e l o 2/40 7.1 Power section and gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.2 High voltage startup generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.3 Power-up description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.4 Power-down description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 t c u d o r P e 7.5 Auto-restart description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.6 let Quasi-resonant operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.7 Frequency foldback function and valley skipping mode . . . . . . . . . . . . . . 22 7.8 Double blanking time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.9 Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.10 Current limit set point and feed-forward option . . . . . . . . . . . . . . . . . . . . . 24 7.11 Overvoltage protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.12 Summary on ZCD pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.13 Feedback and overload protection (OLP) . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.14 Burst-mode operation at no load or very light load . . . . . . . . . . . . . . . . . . 32 7.15 Brown-out protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 7.16 2nd level overcurrent protection and hiccup mode . . . . . . . . . . . . . . . . . . 34 o s b O ) (s s b O Doc ID 15455 Rev 5 VIPER15 Contents 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 15455 Rev 5 3/40 Block diagram 1 VIPER15 Block diagram Figure 2. Block diagram 6$$ )$$CH  "2 )"2HYST $2!). 6IN?/+ )NTERNAL3UPPLYBUS  2EFERENCE6OLTAGES 6"2TH 3500,9 (6?/.  56,/ 56,/ /60$%4%#4)/. ,/')# /3#),,!4/2 3500,9 34!24%2&2%1#,!-0 /60 4(%2-!, 3(54$/7. "5234 :#$ ,/')# $%-!' ,/')# /#0 ,/')# /#0  —!  t e l o  2 s b O "5234 -/$% ,/')# &" s ( t Typical powerc u d o r P e t e ol 2 Table 2. s b O 3 1 (6?/. 2 /40 /60 6IN?/+ "5234 2SENSE '.$ !-V Typical power Part number 4/40 )- r P e ND /#0 07- 2 2 ,%"  3/&4 34!24 u d o 1 ) s ( ct /40 3 VIPER15 230 VAC 85-265 VAC Adapter(1) Open frame(2) Adapter(1) Open frame(2) 9W 10 W 5W 6W 1. Typical continuous power in non ventilated enclosed adapter measured at 50 °C ambient. 2. Maximum practical continuous power in an open frame design at 50 °C ambient, with adequate heat sinking. Doc ID 15455 Rev 5 VIPER15 3 Pin settings Pin settings Figure 3. Connection diagram (top view) ) s ( ct !-V Note: The copper area for heat dissipation has to be designed under the DRAIN pins. Table 3. u d o Pin description r P e Pin n. Name Function DIP-7 SO16 t e l o 1 1...2 GND This pin represents the device ground and the source of the power section. - 4 N.A. Not available for user. It can be connected to GND (pins 1-2) or left not connected. VDD Supply voltage of the control section. This pin also provides the charging current of the external capacitor during power-up. 2 5 ) (s s b O ZCD This is a multifunction pin. 1. Input for the zero current detection circuit for transformer demagnetization sensing. (i.e. RLIM, RFF, ROVP and DOVP, Figure 32) 2. User defined drain current limit set-point and voltage feed forward.The resistor, RLIM, connected between ZCD pin and GND causes the current IZCD and then it limits the static maximum drain current. 3. The resistor RFF, between ZCD pin and the auxiliary winding, performs the feed-forward operation and then the drain current limitation changes according to the converter input voltage. 4. Output overvoltage protection. A voltage exceeding VOVP threshold, (see Table 8 on page 8), shuts the IC down reducing the device consumption. This function is strobed and digitally filtered for high noise immunity. FB Control input for duty cycle control. Internal current generator provides bias current for loop regulation. A voltage below the threshold VFBbm activates the burst-mode operation. A level close to the threshold VFBlin means that we are approaching the cycle-by-cycle overcurrent set point. BR Brownout protection input with hysteresis. A voltage below the threshold VBRth shuts down (not latch) the device and lowers the power consumption. Device operation restarts as the voltage exceeds the threshold VBRth + VBRhyst. It can be connected to ground when not used. t c u P e d o r 3 6 t e l o s b O 4 5 7,8 7 8 High voltage drain pin. The built-in high voltage switched start-up bias 13...16 DRAIN current is drawn from this pin too. Pins connected to the metal frame to facilitate heat dissipation. Doc ID 15455 Rev 5 5/40 Electrical data VIPER15 4 Electrical data 4.1 Maximum ratings Table 4. Symbol Absolute maximum ratings Value Pin (DIP7) Parameter VDRAIN 7, 8 Drain-to-source (ground) voltage EAV 7, 8 Repetitive avalanche energy (limited by TJ = 150 °C) IAR 7, 8 Repetitive avalanche current (limited by TJ = 150 °C) IDRAIN 7, 8 Pulse drain current (limited by TJ = 150 °C) VZCD 3 Control input pin voltage (with IZCD = 1 mA) VFB 4 Feedback voltage VBR 5 Brown-out input pin voltage (with IBR = 0.5 mA) VDD 2 Supply voltage (IDD = 25 mA) IDD 2 Input current (s) A -0.3 Self limited V -0.3 5.5 V -0.3 Self limited V -0.3 Self limited V 25 mA Power dissipation at TA < 40 °C (DIP-7) 1 W Power dissipation at TA < 60 °C (SO16N) 1 W -40 150 °C -55 150 °C od ete Pr ol s b O du A o r P Thermal data e t e ol Symbol Thermal data Parameter Max. value Max. value SO16N DIP7 Unit RthJP Thermal resistance junction pin (Dissipated power = 1 W) 35 40 °C/W RthJA Thermal resistance junction ambient (Dissipated power = 1 W) 90 110 °C/W RthJA Thermal resistance junction ambient (1) (Dissipated power = 1 W) 80 90 °C/W 1. When mounted on a standard single side FR4 board with 100 mm2 (0.155 sq in) of Cu (35 μm thick) 6/40 mJ 2.5 1 Storage temperature Table 5. O V 2 Operating junction temperature range TSTG bs 800 s ( t c TJ Max. t c u )- PTOT 4.2 Unit Min. Doc ID 15455 Rev 5 VIPER15 4.3 Electrical data Electrical characteristics (TJ = -25 to 125 °C, VDD = 14 V (a); unless otherwise specified) Table 6. Power section Symbol VBVDSS IOFF RDS(on) COSS Table 7. Parameter Break-down voltage OFF state drain current Drain-source on state resistance Effective (energy related) output capacitance VDDclamp s b O e t e ol 800 Typ. Max. VFB = GND IDRAIN = 0.2 A, VFB = 3 V, VBR = GND, TJ = 25 °C 20 IDRAIN = 0.2 A, VFB = 3 V, VBR = GND, TJ = 125 °C 40 VDRAIN = 0 to 640 V 60 μA 24 Ω 48 Ω ) s ( ct u d o r P e Unit V VDRAIN = max rating, Test condition 10 pF Min. Typ. Max. Unit 60 80 100 V VDRAIN = 120 V, VBR = GND, VFB = GND, VDD = 4 V -2 -3 -4 mA VDRAIN = 120 V, VBR = GND, VFB = GND, VDD = 4 V after fault. -0.4 -0.6 -0.8 mA Operating voltage range After turn-on 8.5 23.5 V VDD clamp voltage IDD = 20 mA 23.5 Drain-source start voltage )- s ( t c Start-up charging current du o r P VDD IDRAIN = 1 mA, VFB = GND TJ = 25 °C t e l o Parameter Voltage IDDch Min. Supply section Symbol VDRAIN_START Test condition s b O V 13 14 15 V VBR = GND, VFB = GND 7.5 8 8.5 V VDD restart voltage threshold VDRAIN = 120 V, VBR = GND, VFB = GND 4 4.5 5 V IDD0 Operating supply current, not switching VFB = GND, FSW = 0 kHz, VBR = GND, VDD = 10 V 0.9 mA IDD1 Operating supply current, switching VDRAIN = 120 V, 2.5 mA IDD_FAULT Operating supply current, with protection tripping 400 μA IDD_OFF Operating supply current with VDD < VDDoff 270 μA VDDon VDD start-up threshold VDDoff VDD under voltage shutdown threshold VDD(RESTART) VDRAIN = 120 V, Current VDD = 7 V a. Adjust VDD above VDDon start-up threshold before settings to 14 V. Doc ID 15455 Rev 5 7/40 Electrical data VIPER15 Table 8. Controller section Symbol Parameter Test condition Min. Typ. Max. Unit Feedback pin VFBolp Overload shutdown threshold 4.5 4.8 5.2 V VFBlin Linear dynamics upper limit 3.2 3.3 3.4 V VFBbm Burst mode threshold Voltage falling 0.4 0.45 0.5 V VFBbmhys Burst mode hysteresis Voltage rising IFB VFB = 0.3 V Feedback sourced current 50 -150 RFB(DYN) 3.3 V < VFB < 4.8 V Dynamic resistance VFB < 3.3 V ΔVFB / ΔID HFB IZCD = 1 mA u d o VZCDAth Arming voltage threshold Positive-going edge VZCDTth Triggering voltage threshold Negative-going edge IZCD Internal pull-up Turn-on inhibit time after MOSFET’s turn-off TBLANK ) (s Current limitation IDlim Pr tSS e t e l o s b O tSU TON_MIN td tLEB ID_BM ct 5.5 uA 19 kΩ 6 V/A 6 V 0.8 V 0.6 V -2 µA VZCD < 1 V 6.3 µs VZCD >1 V 2.5 µs e t e ol s b O Max drain current limitation u d o Pr 5 uA ) s ( ct 14 ZCD pin Upper clamp voltage -280 -3 2 VZCDCLh -200 mV VFB = 4 V, IZCD = -10 µA TJ = 25 °C 0.38 0.4 0.42 A VIPER15L 3.5 ms VIPER15H 4.2 ms Soft start time VIPER15L 7.5 15 ms VIPER15H 9.5 18 ms 480 ns Start up time Minimum turn ON time 220 400 Propagation delay 100 ns Leading edge blanking 300 ns 90 mA 0.6 A Peak drain current during burst mode VFB = 0.6 V Overcurrent protection (2nd OCP) IDMAX Second overcurrent threshold Overvoltage protection VOVP TSTROBE 8/40 Overvoltage protection threshold Overvoltage protection strobe time Doc ID 15455 Rev 5 3.8 4.2 2.2 4.6 V μs VIPER15 Electrical data Table 8. Controller section (continued) Symbol Parameter Test condition Min. Typ. Max. Unit Oscillator section FOSClim FSTARTER Internal frequency limit VIPER15L 122 136 150 kHz Internal frequency limit VIPER15H 200 225 250 kHz VFB=1 V, VZCD