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RBO40-40G/T

REVERSED BATTERY AND

OVERVOLTAGE PROTECTION

September 2005 - Ed:6

Application Specific Discretes

A.S.D.™

PAK

RBO40-40G

TO220-AB

RBO40-40T

FUNCTIONAL DIAGRAM

■

PROTECTION AGAINST “LOAD DUMP” PULSE

■

40A DIODE TO GUARD AGAINST BATTERY

REVERSAL

■

MONOLITHIC STRUCTURE FOR GREATER

RELIABILITY

■

BREAKDOWN VOLTAGE : 24 V min.

■

CLAMPING VOLTAGE : ± 40 V max.

■

COMPLIANT WITH ISO / DTR 7637

FEATURES

Designed to protect against battery reversal and

load dump overvoltages in automotive applica-

tions, this monolithic component offers multiple

functions in the same package :

D1 : reversed battery protection

T1 : clamping against negative overvoltages

T2 : Transil function against “load dump” effect.

DESCRIPTION

TM : TRANSIL and ASD are trademarks of STMicroelectronics.

Summary of content (10 pages)

PAGE 1
RBO40-40G/T ® Application Specific Discretes A.S.D.™ REVERSED BATTERY AND OVERVOLTAGE PROTECTION FEATURES ■ ■ ■ ■ ■ ■ PROTECTION AGAINST “LOAD DUMP” PULSE 40A DIODE TO GUARD AGAINST BATTERY REVERSAL MONOLITHIC STRUCTURE FOR GREATER RELIABILITY BREAKDOWN VOLTAGE : 24 V min. CLAMPING VOLTAGE : ± 40 V max.
PAGE 2
RBO40-40G / RBO40-40T ABSOLUTE MAXIMUM RATINGS Symbol IFSM IF Parameter tp = 10 ms 120 A DC forward current (Diode D1) Tc = 75°C 40 A 80 V 1500 W - 40 to + 150 °C Peak load dump voltage (see note 1and 2) 5 pulses (1 minute between each pulse) PPP Peak pulse power between Input and Output (Transil T1) Tj initial = 25°C 10/1000 µs Storage and operating junction temperature range Maximum lead temperature for soldering during 10 s at 4.
PAGE 3
RBO40-40G / RBO40-40T 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 C13 Capacitance Transil T1 / Transil T2.
PAGE 4
RBO40-40G / RBO40-40T 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 for motor drive application (See below).
PAGE 5
RBO40-40G / RBO40-40T PINOUT configuration in D2PAK : - Input (1) : - Output (3) : - Gnd (2) : Pin 1 Pin 3 Connected to base Tab Marking Logo, date code, RBO40-40G : D1 T2 T1 TAB PINOUT configuration in TO220AB : - Input (1) : - Output (3) : - GND (2) : Pin 1 Pin 3 Connected to base Tab D1 T2 Marking : Logo, date code, RBO40-40T T1 (TAB) 5/10
PAGE 6
RBO40-40G / RBO40-40T LOAD DUMP TEST GENERATOR CIRCUIT (SCHAFFNER NSG 506 C). Issued from ISO / DTR 7637. Open circuit (voltage curve) (pulse test n°5) Corresponding current wave with D.U.T. I t tr U(V) Ipp offset 10% / 13.5V 90% Vs 10% Vbat Ipp/2 0 t 0 Impulse tp = 40ms t N°5 Vs (V) 66.5 Vbat (V) 13.
PAGE 7
RBO40-40G / RBO40-40T 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). VCL(V) Ppp(kW) 10.0 45.0 5.0 42.5 2.0 40.0 Transil T2 tp = 40ms 1.0 37.5 Transil T1 0.5 0.2 0.1 32.5 tp(ms) 2 1 5 10 Ipp(A) 20 50 100 Fig. 2-2 : Clamping voltage versus peak pulse current (Tj initial = 85°C).
PAGE 8
RBO40-40G / RBO40-40T Fig. 4 : Relative variation of thermal impedance junction to case versus pulse duration. Fig. 5-1 : Peak forward voltage drop versus peak forward current (typical values) - (TRANSIL T2). Zth(j-c)/Rth(j-c) VFM(V) 2.0 1.0 1.8 1.6 0.5 1.4 1.2 1.0 0.2 Tj = 25°°C 0.8 tp (s) 0.1 1E-3 1E-2 Tj = 150°°C 0.6 1E-1 1E+0 1E+1 Fig. 5-2 : Peak forward voltage drop versus peak forward current (typical values) - (DIODE D1). 0.4 0.1 IFM(A) 0.2 0.5 1 2 3.5 3.0 2.5 2.0 1.
PAGE 9
RBO40-40G / RBO40-40T 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 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.
PAGE 10
RBO40-40G / RBO40-40T PACKAGE MECHANICAL DATA TO-220AB Plastic DIMENSIONS REF. B C Millimeters Min. Typ. Max. Min. Typ. Max. b2 A 15.20 a1 L F I A l4 c2 a1 Inches 15.90 0.598 3.75 0.625 0.147 a2 13.00 14.00 0.511 0.551 B 10.00 10.40 0.393 0.409 b1 0.61 0.88 0.024 0.034 b2 1.23 1.32 0.048 0.051 C 4.40 4.60 0.173 0.181 c1 0.49 0.70 0.019 0.027 c2 2.40 2.72 0.094 0.107 e 2.40 2.70 0.094 0.106 F 6.20 6.60 0.244 0.259 I 3.75 3.85 0.147 0.151 I4 15.80 16.