Diotec Products for Set Top Boxes Version 2006-02-07 Diotec Products for Set Top Boxes Power Supply, Control and Protection Power Supply Standard and Schottky Rectifiers, Bridge Rectifiers Signal Processing / Control Zener Diodes, Small Signal Diodes and Transistors Protection Transient Voltage Suppressor Diodes (TVS) © Diotec Semiconductor AG http://www.diotec.com/ 1 Diotec Products for Set Top Boxes Power Supply: Input Stage 16..32 VDC 12 VDC 5.0 VDC 85...265 VAC 3.3 VDC Function Axial / THT1) SMD Part Description Input Protection P4KE...Cx2) P6KE...Cx 1.5KE...Cx TGL41-...Cx, P4SMA...Cx P6SMB...Cx 1.5SMC...Cx 400 W bidirectional TVS 600 W bidirectional TVS 1500 W bidirectional TVS Input Bridge 4x 1N4007 4x SM4007 1 A / 1000 V Standard Recov. Gate Protection B250C2300-1500, B250R MS250, S250, B250S 0.5 to 2.0 A, 600 V Standard B380C2300-1500, B380R MS380, S380, B380S 0.5 to 2.0 A, 800 V Standard B500C2300-1500, B500R MS500, S500, B500S 0.5 to 2.0 A, 1000 V Standard P4KE...Cx TGL-34...Cx TGL41-...Cx, P4SMA...Cx 150 W bidirectional TVS 400 W bidirectional TVS BA158, 1N4937 FR1J 1 A, 600 V Fast Recovery UF4005, UF4006 US1J, US1K 1 A, 600 to 800 V Ultrafast P4KE...x P6KE...x P4SMA...x P6SMB...x 400 W TVS 600 W TVS Telecom Interface4) 1N4004 MYS125, MS125 1.0 / 0.5 A, 400 / 250 V Std. Auxiliary Supply4) 4x 1N4007 1x MS500, S500, B500S 0.5 to 1.0 A, 1000 V Standard Snubber Circuit3 1 2 3 4 2 THT = Through Hole Technology Letter x = “ “ denotes 10%, x = “A” 5% tolerance in breakdown voltage VBR, The Snubber design is highly dependent on the primary MOSFET switch used. Some switches may not need a snubber but require a BA158/1N4937 or a 1N4007 to generate a lower start-up voltage on the primary side. Not shown in the circuit http://www.diotec.com/ © Diotec Semiconductor AG Diotec Products for Set Top Boxes Power Supply: Output Stage 16..32 VDC 12 VDC 5.0 VDC 85...265 VAC 3.3 VDC Function Axial SMD Part Description 3.3 V Output1) SB230, SB330, SB530 SK23, SK33SMA, SK53 2 to 5 A, 30 V2) Schottky SB240, SB340, SB540 SK24, SK34SMA, SK54 2 to 5 A, 40 V Schottky SB340, SB540, SB840 SK34SMA, SK54, SK84 3 to 8 A, 40 V2) Schottky SB360, SB560, SB860 SK36SMA, SK56, SK86 3 to 8 A, 60 V Schottky UF5402, FE3D US3G, ER3D 3 A, 200 V Ultrafast Recovery 1 5.0 V Output ) UF600D, FE6D 12 V Output 16..32 V Output 6 A, 200 V Ultrafast Recovery SB1100, SB2100 SK1100, SK310SMA 1 to 2 A, 100 V Schottky UF4004, UF5404 US1G, US3G 1 to 3 A, 400 V Ultrafast Recov. UF4004 US1G 1 A, 400 V Ultrafast Recovery UF5404 US3G 3 A, 400 V Ultrafast Recovery 2.5 V Output Can be designed using an LDO, but some designers may find the voltage drop of a rectifier such as the UF4002/UF5402 a cost efficient way of deriving the 2.5V rail from the 3.3V rail. Negative Output DVD Players / Recorders use a negative rather than positive HV output. The UF4004 / UF5404 / US1G / US3G remain the correct rectifier for this circuit. 1 2 Some designs require larger currents of 2A or more. If you intend to use axial leaded diodes, special lead bending can reduce the thermal resistance, see “Customer Specific Solutions” When using SMD Schottky diodes, make sure you measure the leakage current IR under worst case conditions/temperature. If unsure, use a higher breakdown voltage to avoid thermal runaway. As such the selector guide included 60V Schottky on the 5V output and 40V on 3.3V © Diotec Semiconductor AG http://www.diotec.com/ 3 Diotec Products for Set Top Boxes Signal Processing and Control Small Signal Diodes, Schottky Diodes, Zener-Diodes, Bipolar Transistors Axial / THT: 1N4148...1N4151; BAV18...BAV21 (150 ... 200 mA, 50 ... 200 V) SD101, SD103 (15 ... 200 mA, 20 ... 60 V) ZPD.., ZPY.., ZY.. (500 mW... 2W) BC327ff, BC546ff, MPSA05/06; MPSA55/66; MPSA42/43, MPSA92/93 (200 ... 800 mA, 25 ... 300 V) SMD: LL4148...LL4151, BAW56, BAV70, BAV99, BAV100...BAV103 (150 ... 200 mA, 50 ... 200 V) LL101, LL103, BAS40, BAS70 (15 ... 200 mA, 20 ... 60 V) ZMM.., BZX84C.., ZMD.., ZMY.., SMZ.. (500 mW... 2 W) BC807ff; MMBTA05/06, MMBTA55/56; MMBTA42/43, MMBTA92/93 (500 ... 800 mA, 25 ... 300 V) Customer specific solutions For assembly of axial leaded diodes the lead wires are bent in various ways. Lowest thermal resistance is achieved by bending the leads in a radial way, see picture in the middle. Diotec offers the service to supply devices with leads already bent, please contact your local Diotec Sales Office or Diotec distributor for more information. 4 http://www.diotec.com/ © Diotec Semiconductor AG