STAC2942FW

STAC2942F HF/VHF/UHF RF power N-channel MOSFETs Features ■ Gold metallization ■ Excellent thermal stability ■ Common source push-pull configuration ■ POUT = 350 W min. with 21 dB gain @ 175 MHz ■ In compliance with the 2002/95/EC European directive Description STAC244F Air cavity The STAC2942F is a gold metallized N-channel MOS field-effect RF power transistor. It is intended for use in 50 V DC large signal applications up to 250 MHz. Figure 1. Pin connection 1 1 2 2 Table 1. 3 1. Drain 3. Source 2. Gate (Bottom side) Device summary Order code Marking Package Packaging STAC2942FW STAC2942F(1) STAC244F Plastic tray 1. For more details please refer to Chapter 7: Marking, packing and shipping specifications. October 2011 Doc ID 17122 Rev 3 1/16 www.st.com 16 Contents STAC2942F Contents 1 2 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 Marking, packing and shipping specifications . . . . . . . . . . . . . . . . . . . 14 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 Doc ID 17122 Rev 3 STAC2942F Electrical data 1 Electrical data 1.1 Maximum ratings Table 2. Absolute maximum ratings (TCASE = 25 °C) Symbol V(BR)DSS(1) VDGR (1) VGS ID PDISS TJ TSTG Parameter Value Unit Drain source voltage 130 V Drain-gate voltage (RGS = 1 MΩ) 130 V Gate-source voltage ±20 V Drain current 40 A Power dissipation 625 W Max. operating junction temperature 200 °C -65 to +150 °C Value Unit 0.28 °C/W Storage temperature 1. TJ = 150 °C 1.2 Thermal data Table 3. Symbol RthJC Thermal data Parameter Junction - case thermal resistance Doc ID 17122 Rev 3 3/16 Electrical characteristics 2 STAC2942F Electrical characteristics (TCASE = 25 oC) 2.1 Static Table 4. Static (per side) Symbol Test conditions V(BR)DSS(1) VGS = 0 V Min. IDS = 100 mA Typ. Max. 130 Unit V IDSS VGS = 0 V VDS = 50 V 100 µA IGSS VGS = 20 V VDS = 0 V 250 nA VGS(Q) VDS = 10 V ID = 250 mA 4.0 V VDS(ON) VGS = 10 V ID = 10 A 3.0 V GFS VDS = 10 V ID = 5 A 1.5 5 CISS COSS VGS = 0 V VDS = 50 V 2.5 f = 1 MHz CRSS S 425 pF 202 pF 12 pF 1. TJ = 150 °C 2.2 Dynamic Table 5. Symbol 4/16 Dynamic Test conditions Min. Typ. Max. Unit POUT VDD = 50 V, IDQ = 2 x 250 mA, PIN = 4 W, f = 175 MHz 350 450 W hD VDD = 50 V, IDQ = 2 x 250 mA, PIN = 4 W, f = 175 MHz 60 75 % Doc ID 17122 Rev 3 STAC2942F 3 Note: Impedance Impedance Figure 2. Current conventions Table 6. Impedance data Freq. (MHz) ZIN (Ω) ZDL(Ω) 175 MHz 2.0 - j2.0 3.5 + j5.2 Measured gate to gate and drain to drain, respectively. Doc ID 17122 Rev 3 5/16 Typical performance 4 STAC2942F Typical performance Figure 3. Capacitances vs drain supply Figure 4. voltage AM00556v1 1000 $0Y  )UHT 0+],GT [P$ Freq. = 1 MHz 900 Output power vs drain supply voltage  3LQ :  800 3LQ :  2XWSXWSRZHU: Capacitances (pF) 700 Ciss Crss 600 Coss 500 A M 0 0 5 5 6 400 3LQ :      300  200  100   0 0 10 20 30 40 50  60  Supply voltage (V) Figure 5. Output power vs gate voltage Figure 6.  !-V    &REQ-(Z 0IN7 6DD6 )DQXM!     6DD6 /UTPUTPOWER7    4CASE #  4CASE #   Output power vs input power !-V  /UTPUTPOWER7  6XSSO\YROWDJH9 6DD6     &REQ  -(Z )DQXM! 4CASE  #  4CASE  #                  'ATEVOLTAGE6 6/16 Doc ID 17122 Rev 3          STAC2942F Typical performance Figure 7. Output power vs input power Figure 8. and case temperature !-V  Efficiency vs output power and case temperature !-V   &REQ-(Z 6DD6 )DQXM!      %FFICIENCY /UTPUTPOWER7    &REQ-(Z 6DD6 )DQXM!      4CASE #    4CASE #  4CASE  #  4CASE #  4CASE #  4CASE  #     Figure 9.     )NPUT0OWER7         /UTPUT0OWER7    Power gain vs output power and case temperature !-V    0OWERGAIND"   &REQ-(Z 6DD6 )DQXM!     4CASE # 4CASE # 4CASE  #                 /UTPUT0OWER7 Doc ID 17122 Rev 3 7/16 Typical performance STAC2942F Figure 10. Maximum safe operating area 6ECUG u%6L u% /CZ&TCKP%WTTGPV +F #   &% O5 O5        &TCKPUWRRN[XQNVCIG 8FF 8 !-V Figure 11. Transient thermal impedance  :THJ C #7  3INGLEPULSE              %   %  %  %  % 2ECTANGULAR POWER PULSE WIDTH SEC !-V 8/16 Doc ID 17122 Rev 3 STAC2942F Typical performance Figure 12. Transient thermal model 2 2 2  /HM # # #  & 2 2 2  /HM # # #  & 2 2 2  /HM # # #  & 2 2 2  /HM # # #  & !-V Doc ID 17122 Rev 3 9/16 Test circuit 5 STAC2942F Test circuit Figure 13. 175 MHz test circuit schematic (production test circuit) $ # # $ $ % # # # # # % % $ «52#%' &+/'05+10«6#$.' &+/ +0 // # $     %   # % 64#05/+55+10«.+0'«&+/'05+105 ($ % ($ 4 % % ($ 6 %14' $ 6 % ($ % %14' .+ % 6GF 6 %14' % ($ 4 4 % % % % %14' 8II % % % % % 6 % % ($ 8II 4 ($ % 4 4 % % % 016'5 «&+/'05+105«#6«%1/210'06«5;/$1.5«#4'«4'('4'0%'«(14«%1/210'06«2.#%'/'06«5''«5*''6« «)#2«$'69''0«)4170&« «64#05/+55+10«.+0'5«+5«=?«««««««««««««6;2 !-V Table 7. 175 MHz test circuit component part list Component Description C1, C2, C14, C15, C24, C25 1200 pF ATC 700B chip capacitor C5 75 pF ATC 100B chip capacitor C6 ST406 variable capacitor C9, C10 47 pF ATC 100B chip capacitor C11, C12, C13 43 pF ATC 100B chip capacitor C16, C18 470 pF ATC 100B chip capacitor C17, C19, C20, C21 10,000 pF ATC 200B chip capacitor C22, C23 0.1 µF 200 V chip capacitor C28 10 µF 100 V electrolytic capacitor C29 0.8 - 8 pF variable capacitor R1, R2, R5, R6 430 Ω, 1/2 W chip resistor 10/16 8 Doc ID 17122 Rev 3 $ % STAC2942F Table 7. Test circuit 175 MHz test circuit component part list (continued) Component Description R3, R4 270 Ω 1/2 W axial lead resistor B1 RG-316 50 Ω 11.8" thru ferrite toroid B2 RG-142 50 Ω 11.8" T1 4:1, RG-316 25 Ω, 5.9", 2 turns thru ferrite core T2 1:4, 25 Ω semi-rigid cable, OD .141", 5.9" L1 λ/4 inductor, RG-142 50 Ω, 11.8", 3 turns thru ferrite toroid FB1,FB5 Ferrite toroid FB2, FB6 Multi-aperture core FB3, FB4 Surface mount ferrite bead PCB Rogers ultralam 2000, Er 2.55, .060" Figure 14. Circuit layout Doc ID 17122 Rev 3 11/16 Package mechanical data 6 STAC2942F 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. STAC244F package dimensions mm. Inch Dim. 12/16 Min Max Min Max A 5.10 5.59 200 220 A1 4.32 4.83 170 190 B 4.32 5.33 170 210 C 9.65 9.91 380 390 D 19.61 20.02 772 788 E 20.45 20.70 805 815 F 0.08 1.15 .003 .006 G 0.89 1.14 .035 .045 H 1.45 1.70 .057 .067 I 3.18 4.32 .125 .170 J 9.27 9.53 .365 .375 Doc ID 17122 Rev 3 STAC2942F Package mechanical data Figure 15. Package dimensions AM01112v1 Doc ID 17122 Rev 3 13/16 Marking, packing and shipping specifications 7 STAC2942F Marking, packing and shipping specifications Table 9. Packing and shipping specifications Order code Packaging Pcs per tray Dry pack humidity Lot code STAC2942FW Tube 20 < 10 % Not mixed Figure 16. Marking layout STAC2942F Table 10. 14/16 Marking specifications Symbol Description W Wafer process code CZ Assembly plant xxx Last 3 digit of diffusion lot VY Diffusion plant MAR Country of origin CZ Test and finishing plant y Assembly year yy Assembly week Doc ID 17122 Rev 3 STAC2942F 8 Revision history Revision history Table 11. Document revision history Date Revision Changes 12-Feb-2010 1 First release. 16-Apr-2010 2 Added Figure 10, Figure 11 and Figure 12. 25-Oct-2011 3 Added Chapter 7: Marking, packing and shipping specifications. Doc ID 17122 Rev 3 15/16 STAC2942F 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. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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