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SIEMENS BTS 780 Owner's Manual and User Guide

Summary

The BTS 780 is a highly integrated, quad switch driver designed for efficient DC motor management in industrial and automotive applications. This robust H-Bridge solution features ultra-low resistance, high peak current capability, and advanced protection against short circuits, overloads, and voltage spikes. The accompanying manual provides comprehensive technical coverage, including detailed pin definitions, block diagrams, circuit descriptions, and application schematics necessary for seamless integration into demanding power switching systems.

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Page 1 Text Content

Trilith IC BTS 780

Target Data

Overview

Features Quad switch driver Free configurable as bridge or quad-switch Optimized for DC motor management applications

Ultra low RDS °C:

High-side switch: typ. 35 mΩ, P-TO263-15-1 Low-side switch: typ. 15 mΩ Very high peak current capability Very low quiescent current Space- and thermal optimized SMD-Power-Package Load and GND-short-circuit-protected Operates up to 40 V 2-Bit status flag diagnosis Overtemperature shut down with hysteresis Short-circuit detection and diagnosis Open-load detection and diagnosis C-MOS compatible inputs Internal clamp diodes Isolated sources for external current sensing Over- and under-voltage detection with hysteresis

Type Ordering Code Package BTS 780 on request P-TO263-15-1

Description The BTS 780 is a Trilith IC contains one double high-side switch and two low-side switches in one P-TO263-15-1.

“Silicon instead of heatsink” becomes true

The ultra low RDS

ON of this device avoids powerdissipation. It saves costs in mechanical

construction and mounting and increases the efficiency. The high-side switches are produced in the SIEMENS SMART SIPMOS® technology. It is fully protected and contains the signal conditioning circuitry for diagnosis (the comparable standard high-side product is the BTS 734L1).

Semiconductor Group 1998-02-01

Page Summary Contents For SIEMENS BTS 780 Owner's Manual and User Guide

Page 1 Trilith IC BTS 780 Target Data Overview Features Quad switch driver Free configurable as bridge or quad-switch Optimized for DC motor management applications Ultra low RDS °C: High-side switch: typ. ...
Page 2 BTS 780 For minimized RDS ON the two low-side switches are produced in the SIEMENS S-Fet logic level technology (the comparable standard product is the BUZ 100SL). Each drain of these three chips is m...
Page 3 BTS 780 Molding Compound Heat-Slug 1 Heat-Slug 2 Heat-Slug 3 AEP02224 Figure 1 Pin Configuration (top view) Semiconductor Group 1998-02-01
Page 4 BTS 780 Pin Definitions and Functions Pin No. Symbol Function 1, 2 SL1 Source of low-side switch 1 GL1 Gate of low-side switch 1 4, 8 GND Ground GH1 Gate of high-side switch 1 ST1 Status of high-side ...
Page 5 BTS 780 DVHS Heat-Slug 2 DST1 C6V1 Diagnosis Biasing and Protection DST2 C6V1 Driver GH1 IN OUT GH2 LH01 Ωk3.5 HH11 Heat-Slug 3 DI2 DL2 C6V1 Heat-Slug 1 SL1 SL2 AEB02225 Figure 2 Block Diagram Semicon...
Page 6 BTS 780 Circuit Description Input Circuit The control inputs GH1,2 consist of TTL/CMOS compatible Schmitt-Triggers with hysteresis. Buffer amplifiers are driven by these stages and convert the logic s...
Page 7 BTS 780 Under-Voltage-Lockout (UVLO) When VS reaches the switch-on voltage VUV ON the IC becomes active with a hysteresis. The High-Side output transistors are switched off if the supply voltage VS dr...
Page 8 BTS 780 Truthtable and Diagnosis (valid only for the High-Side-Switches) Flag GH1 GH2 SH1 SH2 ST1 ST2 Remarks Inputs Outputs stand-by mode Normal operation; switch1 active identical with functional tr...
Page 9 BTS 780 Electrical Characteristics Absolute Maximum Ratings 40 °C < Tj < 150 °C Parameter Symbol Limit Values Unit Remarks min. max. High-Side-Switches (Pins DHVS, GH1,2 and SH1,2) Supply voltag...
Page 10 BTS 780 Operating Range Parameter Symbol Limit Values Unit Remarks min. max. Supply voltage VS VUV After VS rising above VUV Input voltages VGH – 0.3 Input voltages VGL – 9 Status output current IST m...
Page 11 BTS 780 Electrical Characteristics ISH1 = ISH2 = ISL1 = ISL2 = 0 A; – 40 °C < Tj < 150 °C; 8 V > VS > 18 V unless otherwise specified Parameter Symbol Limit Values Unit Test Condition min....
Page 12 BTS 780 Electrical Characteristics (cont’d) ISH1 = ISH2 = ISL1 = ISL2 = 0 A; – 40 °C < Tj < 150 °C; 8 V > VS > 18 V unless otherwise specified Parameter Symbol Limit Values Unit Test Condi...
Page 13 BTS 780 Electrical Characteristics (cont’d) ISH1 = ISH2 = ISL1 = ISL2 = 0 A; – 40 °C < Tj < 150 °C; 8 V > VS > 18 V unless otherwise specified Parameter Symbol Limit Values Unit Test Condi...
Page 14 BTS 780 Electrical Characteristics (cont’d) ISH1 = ISH2 = ISL1 = ISL2 = 0 A; – 40 °C < Tj < 150 °C; 8 V > VS > 18 V unless otherwise specified Parameter Symbol Limit Values Unit Test Condi...
Page 15 BTS 780 CS CL FH1, 470n F F1000 STLK1ST1Ι ST1 Heat-Slug 216 DST1 C6V1 ST2 STLK2Ι ST2 Diagnosis Biasing and Protection VDSH1 DSH2V FH1V__VFH2 Driver GH1 I1R STL1 GH1 IN OUT VSTL2 DI1 LL00 O1 O2R SH2Ι C...
Page 16 BTS 780 Watchdog Reset TLE 4278G ST22 ST12 S2 WD DHVS ST1 Heat-Slug 216 DST1 C6V1 ST2 Diagnosis Biasing and Protection DST2 C6V1 Driver IN OUT LL00 O1 O2R C6V1 SH2 GH2 Ωk10 Heat-Slug 3 DL2 Ωk3.5 HH11 ...
Page 17 BTS 780 Package Outlines P-TO263-15-1 (Plastic Transistor Single Outline Package) 8˚ max. BA0.25 0.1 1) Typical All metal surfaces tin plated, except area of cut. GPT09151 Sorts of Packing Package out...

Manual Details

Brand Siemens
Pages 17
File Size 118.15 KB
Published June 01, 2026
65 views

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Frequently Asked Questions

What kinds of input signals are supported by this device?

The control inputs (GH1, GH2) consist of TTL/CMOS compatible Schmitt-Triggers with hysteresis.

Does the BTS 780 support multiple connection configurations?

Yes, it can be used in H-Bridge configuration or any other switch setup because its sources are connected to separate pins.

What fault protection features does the device offer?

It provides built-in protection against load and GND short circuits, overtemperature shutdown with hysteresis, and open-load detection.