RBO08-40G/T ® Application Specific Discretes A.S.D.™ REVERSED BATTERY AND OVERVOLTAGE PROTECTION FEATURES ■ ■ ■ ■ ■ ■ ■ 8A DIODE TO GUARD AGAINST BATTERY REVERSAL. NEGATIVE OVERVOLTAGE PROTECTION BY CLAMPING. COMPLIANT WITH ISO/DTR 7637 STANDARD FOR PULSES 1, 2, 3a and 3b. SUITABLE FOR AUTOPROTECTED ALTERNATOR ENVIRONMENT. BREAKDOWN VOLTAGE : 24 V min. CLAMPING VOLTAGE : ± 40 V max. MONOLITHIC STRUCTURE FOR GREATER RELIABILITY. D2PAK RBO08-40G DESCRIPTION Designed to protect against battery reversal and overvoltages in automotive applications, this monolithic component offers multiple functions in the same package : D1 : reversed battery protection T1 : clamping against negative overvoltages T2 : Transil function for overvoltage protection. TO220-AB RBO08-40T FUNCTIONAL DIAGRAM 3 1 2 TM : TRANSIL and ASD are trademarks of STMicroelectronics. October 2003 - Ed: 3 1/9 RBO08-40G / RBO08-40T ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Non repetitive surge peak forward current (Diode D1) tp = 10 ms 80 A DC forward current (Diode D1) Tc = 75°C 8 A PPP Peak pulse power between Input and Output (Transil T1) see note 1 Tj initial = 25°C 10/1000 µs 600 W PPP Peak pulse power between Pins 3 and 2 (10/1000µs) 1500 W Tstg Tj Storage temperature range Maximum junction temperature - 40 to + 150 150 °C TL Maximum lead temperature for soldering during 10 s at 4.5mm from case for TO220-AB IFSM IF 260 °C Note 1 : for a surge greater than the maximum value, the device will fail in short-circuit.. THERMAL RESISTANCE Symbol Rth (j-c) Parameter Junction to case RBO08-40M RBO08-40T D1 Value Unit 2.4 2.4 °C/W I32 1 3 I13 Ipp32 IF T1 2 T2 IR 32 IR M 32 VCL 31 VBR 31 VR M 31 VF 13 IR M 31 IR 31 Ipp31 2/9 V13 VR M 32 VB R 32 VC L 32 V32 3 1 2 RBO08-40G / RBO08-40T Symbol Parameter VRM31/VRM32 Stand-off voltage Transil T1 / Transil T2. VBR31/VBR32 Breakdown voltage Transil T1 / Transil T2. IR31/IR32 Leakage current Transil T1 / Transil T2. VCL31/VCL32 Clamping voltage Transil T1 / Transil T2. VF13 Forward voltage drop Diode D1. IPP Peak pulse current. αT Temperature coefficient of VBR. C31/C32 Capacitance Transil T1 / Transil T2. ELECTRICAL CHARACTERISTICS : DIODE D1 (- 40°C < Tamb < + 85°C) Symbol VF 13 Value Test Conditions IF = 8 A Min. Typ. RBO08-40G VF 13 Unit 1.5 V 1.7 V 1.45 V RBO08-40G 1.3 V RBO08-40T 1.35 V IF = 4 A @ Tamb = 25°C 1.2 V IF = 1 A 1.1 V IF = 1 A @ Tamb = 25°C 1.0 V IF = 1 A @ Tj = 85°C 0.9 V RBO08-40T IF = 8 A @ Tamb = 25°C VF 13 Max. IF = 4 A ELECTRICAL CHARACTERISTICS : TRANSIL T1 (- 40°C < Tamb < + 85°C) Symbol Value Test Conditions Min. Typ. Max. Unit VBR 31 IR = 1 mA 22 35 V VBR 31 IR = 1 mA, Tamb = 25°C 24 32 V IRM 31 VRM = 20 V 50 µA 10 µA IRM 31 VRM = 20 V, Tamb = 25°C VCL 31 IPP = 15A, Tj initial = 25°C αT Temperature coefficient of VBR C 31 F = 1MHz 10/1000µs VR = 0 V 40 V 9 -4 1000 10 /°C pF ELECTRICAL CHARACTERISTICS : TRANSIL T2 (- 40°C < Tamb < + 85°C) Symbol VBR 32 Min. IR = 1 mA VBR 32 IR = 1 mA, Tamb = 25°C IRM 32 VRM = 20 V IRM 32 VRM = 20 V, Tamb = 25°C VCL 32 IPP = 37.5 A αT Value Test Conditions Temperature coefficient of VBR 10/1000µs Typ. Max. Unit 22 35 V 24 32 V 50 µA 10 µA 40 V 8.5 10-4/⊃ C 3/9 RBO08-40G / RBO08-40T PRODUCT DESCRIPTION 3 1 The RBO has 3 functions integrated on the same chip. D1 : “Diode function” in order to protect against reversed battery operation. T2 : “Transil function” in order to protect against positive surge generated by electric systems (ignition, relay. ...). T1 : Protection againt negative surges such as inductive overvoltages (see motor application below). 2 BASIC APPLICATION * The monolithic multi-function protection (RBO) has been developed to protect sensitive semiconductors in car electronic modules against both overvoltage and battery reverse. * In addition, the RBO circuit prevents overvoltages generated by the module from affecting the car supply network. MOTOR DRIVER APPLICATION BATTERY Filter D1 T2 MOTOR T1 RBO DEVICE MOTOR CONTROL In this application, one half of the motor drive circuit is supplied through the “RBO” and is thus protected as per its basic function application. The second part is connected directly to the “car supply network” and is protected as follows : - For positive surges : T2 (clamping phase) and D1 in forward-biased. - For negative surges : T1 (clamping phase) and T2 in forward-biased. 4/9 RBO08-40G / RBO08-40T PINOUT configuration in D2PAK : - Input (1) - Output (3) - Gnd (2) : Pin 1 : Pin 3 : Connected to base Tab D1 T2 T1 TAB PINOUT configuration in TO220AB : - Input (1) : Pin 1 - Output (3) : Pin 3 - GND (2) : Connected to base Tab D1 T2 T1 (TAB) 5/9 RBO08-40G / RBO08-40T Fig. 1 : Peak pulse power versus exponential pulse duration (Tj initial = 85°C). Fig. 2-1 : Clamping voltage versus peak pulse current (Tj initial = 85°C). Exponential waveform tp = 40 ms and tp = 1 ms (TRANSIL T2). Pp p (kW) 10.0 VCL (V) 45 5.0 40 2.0 tp = 40ms 1.0 35 Transil T2 tp = 1ms 0.5 30 Diode D1 0.2 0.1 Ipp(A) tp(ms) 1 2 5 10 20 50 100 Fig. 2-2 : Clamping voltage versus peak pulse current (Tj initial = 85°C). Exponential waveform tp = 1 ms and tp = 20 µs (TRANSIL T1). 25 0.1 0.2 0.5 1.0 2.0 5.0 10.0 20.0 50.0 Fig. 3 : Relative variation of peak pulse power versus junction temperature. Ppp[Tj]/Ppp[Tj initial=85°C] VCL (V) 50 1.20 1.00 45 0.80 40 0.60 tp = 1ms 35 tp = 20µs 30 0.20 Ipp(A) 25 0.1 6/9 0.2 0.5 1.0 2.0 0.40 Tj initial (°C) 5.0 10.0 20.0 50.0 100.0 0.00 0 25 50 75 100 125 150 175 RBO08-40G / RBO08-40T Fig. 4 : Relative variation of thermal impedance junction to case versus pulse duration. Zth(j-c)/Rth(j-c) 1.0 VFM(V) 0.5 0.2 tp (s) 0.1 1E-3 1E-2 1E-1 1E+0 1E+1 Fig. 5-2 : Peak forward voltage drop versus peak forward current (typical values) - (DIODE D1). 1.6 Fig. 5-1 : Peak forward voltage drop versus peak forward current (typical values) - (TRANSIL T2). 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.1 Tj=25°C Tj=150°C IFM (A) 1.0 10.0 20.0 Fig. 6 : Relative variation of leakage current versus junction temperature. VFM(V) 1.4 1.2 1.0 Tj=25°C 0.8 0.6 0.4 0.2 0.0 0.1 Tj=150°C IFM (A) 1.0 10.0 20.0 ORDERING INFORMATION RBO 08 Reverse Battery & Overvoltage Protection - 40 G VCL = 40V IF(AV) = 8A Package: G = D2PAK T = TO-220AB 7/9 RBO08-40G / RBO08-40T PACKAGE MECHANICAL DATA D2PAK Plastic DIMENSIONS REF. A E C2 L2 D L Millimeters Min. Typ. Max. Min. Typ. Max. A 4.30 4.60 0.169 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.70 0.93 0.027 0.037 B2 L3 A1 B2 R C B G A2 2.0 MIN. FLAT ZONE 1.40 FOOT-PRINT D2PAK 16.90 10.30 5.08 1.30 3.70 8.90 8/9 0.055 C 0.45 0.60 0.017 0.024 C2 1.21 1.36 0.047 0.054 D 8.95 9.35 0.352 0.368 E 10.00 10.28 0.393 0.405 G 4.88 5.28 0.192 0.208 L 15.00 15.85 0.590 0.624 L2 1.27 1.40 0.050 0.055 L3 1.40 1.75 0.055 0.069 R V2 Inches V2 0.40 0° 0.016 8° 0° 8° RBO08-40G / RBO08-40T PACKAGE MECHANICAL DATA TO-220AB Plastic DIMENSIONS REF. A Millimeters Inches Min. Max. Min. Max. 14.23 15.87 0.560 0.625 a1 4.50 0.177 a2 12.70 14.70 0.500 0.579 B 10.20 10.45 0.402 0.411 b1 0.64 0.96 0.025 0.038 b2 1.15 1.39 0.045 0.055 C 4.48 4.82 0.176 0.190 c1 0.35 0.65 0.020 0.026 c2 2.10 2.70 0.083 0.106 e 2.29 2.79 0.090 0.110 F 5.85 6.85 0.230 0.270 I 3.55 4.00 0.140 0.157 L 2.54 3.00 0.100 0.118 l2 1.45 1.75 0.057 0.069 l3 0.80 1.20 0.031 0.047 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2003 STMicroelectronics - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain Sweden - Switzerland - United Kingdom - United States www.st.com 9/9