Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 ■General Description ■Package---TO220F-2Pin An SBD for overheating detection is incorporated together with a secondary side rectification FRD into a TO220F package. By using the temperature change of the leakage current of the built-in SBD, high-precision heating protection can be performed without using expensive temperature sensors, such as a thermistor and a posistor. ■Applications • For an overcurrent protection, a partial short circuit and an impedance short protection. An overcurrent protection is possible for a secondary side output, especially for each output of a multi-output power supply. • For an overcurrent protection of a peak-load power supply units. Thermal protection is possible even for the unit kept in a peak-load state. ■Features • Built-in SBD for an overheating detection together with a FRD in a TO220F package. (By combining together in a single package, FMXB-2102 excels in heat performance.) • High-precision heating protection without expensive temperature sensors such as a thermistor and a posistor. ■Typical connection The typical connection below shows that the overheating protection with a small component count and a minimal temperature variation is realized and a single diode enables to combine a latch circuit with a overvoltage protection circuit. This circuit allows to adjust a latch temperature easily by adjusting a detection resistor. Note: In the case of dead short, the overheating protection is not available because there is no voltage appearing on the secondary-side. In this case, please protect the unit by the primary side detection as usual. Typical connection FMXB-2102 Voltage appears across the REX due to the IR of SBD in the FMXB-2102. When the voltage across the REX is raised up to the Vref of a shunt regulator by the rapid increase in the IR at high temperature, the latch circuit is operated. Sanken Electric Co.,Ltd. http://www.sanken-ele.co.jp/en/ 1/8 D01-005EA-051215 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 Die Structure: Silicon Planer Diode (FRD, SBD) §1. Absolute Maximum Ratings and Electrical Characteristics <FRD part> •Absolute Maximum Ratings No. Parameter 1 Symbol Unit Rating Transient Peak Reverse Voltage VRSM V 200 2 Peak Reverse Voltage VRM V 200 3 Average Forward Current IF(AV) A 10 4 Peak Surge Forward Current IFSM A 150 5 I2t Limiting Value I2t A2S 112.5 6 Junction Temperature Tj °C -40 to +150 7 Storage Temperature Tstg °C -40 to+150 Symbol Unit Rating Conditions 10msec. Half sine-wave, one shot 1msec ≤ t ≤ 10msec • Electrical Characteristics No. Parameter Conditions 1 Forward Voltage Drop VF V 2 Reverse Leakage Current IR µA 200 max. VR=VRM H•IR mA 50 max. VR=VRM, Tj=150°C trr1 ns 30 max IF=IRP=500mA 90% Recovery point trr2 ns 25 max IF=500mA, IRP=1A 75%Recovery point Rth(j-c) °C/W 4.0 max. Between Junction and case 3 4 5 Reverse Leakage Current Under High Temperature 0.98 max. Reverse Recovery Time Thermal Resistance IF=10A Sanken Electric Co.,Ltd. D01-005EA-051215 2/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 <SBD part> •Absolute Maximum Ratings No. Parameter Symbol Unit Rating Conditions 1 Transient Peak Reverse Voltage VRSM V 90 2 Peak Reverse Voltage VRM V 90 3 Junction Temperature Tj °C -40 to +150 4 Storage Temperature Tstg °C -40 to+150 Symbol Unit IR1 • Electrical Characteristics No. 1 2 Parameter Rating Conditions min. typ. max. μA - - 100 VR=15V IR2 mA - - 2.0 VR=90V Reverse Leakage Current Under H•IR1 mA 1.60 2.30 3.00 VR=15V, Tj=130°C High Temperature H•IR2 mA - - 55 VR=90V, Tj=150°C Reverse Leakage Current IR－Tj Characteristics of SBD at 15V Reverse Leakage Current (mA) 5 4 max typ. min 3 2 1 0 120 125 130 135 140 Junction Temperature（℃） Sanken Electric Co.,Ltd. D01-005EA-051215 3/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 §2. Package information 2-1 Package type, physical dimensions and material φ3 .3 4.2 2.8 C 0.5 10.0 Internal layout 4.0 8.4 (2) FRD (1) Temperature detection SBD 16.9 ※1 *1 ※2 0.8 *2 ※3 (1) 2.6 (2) 1.35 3.9 (13.5) 0.85 2.54 0.45 指示 tolerance: ±0.2 toler 2.54 Unit: mm 2-2 Marking Marking Part Number Type Name Polarity Lot number 1st letter: Last digit of year FMXB-2102 2nd letter: Month From 1 to 9 for Jan. to Sep., O for Oct., N for Nov., D for Dec. XB2102 3rd & 4th letter: Day e.g.: 5N28 (November 28, 2005) Sanken Electric Co.,Ltd. D01-005EA-051215 4/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 §3. Thermal protection Sample calculation for the operating temperature range. SE series IR－Tj Characteristics of SBD at 15V Reverse Leakage Current (mA) 5 4 max typ. min 3 2 1 0 120 125 130 135 140 Junction Temperature（℃） When the voltage is generated across the REX by the IR of the SBD and this voltage is raised up to the Vref of the shunt regulator by the rapid increase in the IR at high temperature, the latch circuit is started to operate and the power supply unit stops its operation. Say Vref=2.5V, REX=1200Ω. Then IR=2.5 / 1200 = 2.08mA. Hence, the figure above gives the thermal protection operating temperature range: 124°C to 134.2°C. Sanken Electric Co.,Ltd. D01-005EA-051215 5/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 <Worldwide Contacts> Asia Pacific China Sanken Electric Hong Kong Co., Ltd. Suite 1026 Ocean Centre, Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: 852-2735-5262 Fax: 852-2735-5494 Sanken Electric (Shanghai) Co., Ltd. Room3202, Maxdo Centre, Xingyi Road 8, Changning district, Shanghai, China Tel: 86-21-5208-1177 Fax: 86-21-5208-1757 India Saket Devices Pvt. Ltd. Office No.25, 2nd Floor, Bandal - Dhankude Plaza, Near PMT Depot, Paud Road, Kothrud, Pune - 411 038, India Tel: 91-20-5621-2340 Fax: 91-20-2528-5459 Japan Sanken Electric Co., Ltd. Overseas Sales Headquaters Metropolitan Plaza Bldg. 1-11-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-0021, Japan Tel: 81-3-3986-6164 Fax: 81-3-3986-8637 Korea Sanken Electric Korea Co., Ltd. Mirae Asset Life Bldg. 6F, 168 Kongduk-dong, Mapo-ku, Seoul, 121-705, Korea Tel: 82-2-714-3700 Fax: 82-2-3272-2145 Singapore Sanken Electric Singapore Pte. Ltd. 150 Beach Road, #14-03 The Gateway West, Singapore 189720 Tel: 65-6291-4755 Fax: 65-6297-1744 Taiwan Taiwan Sanken Electric Co., Ltd. Room 1801, 18th Floor, 88 Jung Shiau East Road, Sec. 2, Taipei 100, Taiwan R.O.C. Tel: 886-2-2356-8161 Fax: 886-2-2356-8261 Sanken Electric Co.,Ltd. D01-005EA-051215 6/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 Europe France Allegro MicroSystems Europe Les Pleiades, Park Nord Annecy, 74370 Metz-Tessy, France Tel: 33-450512359 Fax: 33-450512083 United Kingdom Allegro MicroSystems Europe Limited Balfour House, Churchfield Road, Walton-on-Thames, Surrey KT12 2TD, U.K. Tel: 44-1932-253355 Fax: 44-1932-246622 North America United States Allegro MicroSystems, Inc. 115 Northeast Cutoff, Worcester, Massachusetts 01606, U.S.A. Tel: 1-508-853-5000 Fax: 1-508-853-3353 Allegro MicroSystems, Inc. (Southern California) 14 Hughes Street, Suite B105, Irvine, CA 92618 Tel: 1-949-460-2003 Fax: 1-949-460-7837 Sanken Electric Co.,Ltd. D01-005EA-051215 7/8 Fast Recovery Diode with built-in SBD for temperature detection FMXB-2102 December, 2005 CAUTION / WARNING ●The information in this publication has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. ● Sanken reserves the right to make changes without further notice to any products herein in the interest of improvements in the performance, reliability, or manufacturability of its products. Before placing an order, Sanken advises its customers to obtain the latest version of the relevant information to verify that the information being relied upon is current. ● Application and operation examples described in this catalog are quoted for the sole purpose of reference for the use of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of Sanken or any third party which may result from its use. ● When using the products herein, the applicability and suitability of such products for the intended purpose or object shall be reviewed at the users’ responsibility. ● Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure nd defect of semiconductor products at a certain rate is inevitable. 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Also, as purchaser of these products/technology, you agree to follow the procedures for the export or transfer of these products/technology, under the Foreign Exchange and Foreign Trade Law, when you export or transfer the products/technology abroad. Sanken Electric Co.,Ltd. D01-005EA-051215 8/8