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SG1635/SG3635
2A, HALF-BRIDGE DRIVER
DESCRIPTION
The SG1635 is a monolithic integrated circuit designed to interface low-level logic signals with high-current, inductive, or capacitive loads. This device is particularly adept at high-speed pulse width modulation for motor drives or Class D audio amplifiers, and when used in pairs, they can provide full bridge drive for bi-directional control. With TTL-compatible units, this device will either source or sink up to 5A of peak current with interlock protection to insure that source and sink cannot be on simultaneously. Additional protection is provided by thermal shutdown of the source output if the chip temperature rises above 160C. High speed internal commutating diodes are also included.
FEATURES
* * * * * * * Source or sink 5A peak Half-bridge with internal diodes TTL input compatibility Either dual- or tri-state output Direct PWM motor drive from microprocessor Built-in thermal protection SG3635P replaces UDN2935Z
HIGH RELIABILITY FEATURES - SG1635
Available to MIL-STD-883 LMI level "S" processing available
BLOCK DIAGRAM - SG1635/3635
TRUTH TABLE
Enable 0 0 1 1 Pulse 0 1 0 1 Output High High Low Off - High Z
1 = Open or High
6/91 Rev 1.1 5/94
Copyright (c) 1994
1
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1635/SG3635
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (VS) SG1635/SG3635 ............................................................. 40V Input Voltage Enable and Pulse .............................................................. 7V Source/Sink Output Current Contiuous ........................................................................... 3A Peak ................................................................................... 5A
Note 1. Values beyond which damage may occur.
Operating Junction Temperature Hermetic (R - Package) ............................................... 150C Plastic (P - Package) ................................................... 150C Storage Temperature Range ............................ -65C to 150C Lead Temperature (Soldering, 10 Seconds) .................. 300C
THERMAL DATA
R Package: Thermal Resistance-Junction to Case, JC ................. 5.0C/W Thermal Resistance-Junction to Ambient, JA .............. 40C/W P Package: Thermal Resistance-Junction to Case, JT ................ 4.0C/W* Thermal Resistance-Junction to Ambient, JA ............. 55C/W
Note A. Junction Temperature Calculation: TJ = TA + (PD x JA). Note B. The above numbers for JC are maximums for the limiting
*
= JT (Junction to Tab)
thermal resistance of the package in a standard mounting configuration. The JA numbers are meant to be guidelines for the thermal performance of the device/pcboard system. All of the above assume no ambient airflow.
RECOMMENDED OPERATING CONDITIONS (Note 2)
Supply Voltage (VS) SG1635/SG3635 .................................................... 8V to 35V Source/Sink Output Current Continuous ......................................................................... 2A Peak ................................................................................... 3A Operating Ambient Temperature Range SG1635 ........................................................... -55C to 125C SG3635 ................................................................ 0C to 70C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
SG1635 and SG3635
(Unless otherwise specified, these specfiications apply over the operating ambient temperatures for SG1635 with -55C TA 125C, SG3635 with 0C TA 70C, and +VS = 24V. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter Static Characteristics Logic 1 Input Voltage Logic 0 Input Voltage Input High Current Input Low Current Output Leakage
Test Conditions
SG1635/SG3635 Min. Typ. Max. 2.0
Units
Source Saturation Voltage Sink Saturation Voltage Diode Forward Voltage Supply Current
VPULSE = VENABLE = 4.5V VPULSE = VENABLE = 0V VPULSE = VENABLE = 2.0V VOUT = 24V VOUT = 0V VPULSE = 2.0V, VENABLE = 0.8V, IOUT = -2A VPULSE = 0.8V, VENABLE = 2.0V, IOUT = 2A IDIODE = 2A VS = 35V VPULSE = 2.0V, VENABLE = 0.8V VPULSE = 0.8V, VENABLE = 2.0V
0.8 200 -3.2 500 40 3.0 3.0 3.0 25 70
V V A mA mA mA V V V mA mA
2.0 2.0 2.0
6/91 Rev 1.1 2/94
Copyright (c) 1994
2
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1635/SG3635
ELECTRICAL CHARACTERISTICS (continued)
Parameter Dynamic Characteristics (Notes 3 and 4) Pulse Propagation Delay Pulse Transition Time Enable Propagation Delay Enable Transition Time Definition SG1635/3635 Min. Typ. Max. 50 100 200 200 200 100 100 100 Units
Turn-On Delay (TPDHL) Turn-Off Delay (TPDLH) Turn-On (TPTHL) Turn-Off (TPTLH) Turn-On Delay (TEDLH) Turn-Off Delay (TEDHL) Turn-On (TETLH) Turn-Off (TETHL)
ns ns ns ns ns ns ns ns
Note 3. TJ = 25C. Note 4. Although these parameters are guaranteed, they are not tested in production.
6/91 Rev 1.1 2/94
Copyright (c) 1994
3
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1635/SG3635
AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS - FIGURE 1
APPLICATION INFORMATION
TYPICAL MOTOR DRIVE APPLICATION Two SG1635's form a full bridge motor drive circuit with the appropriate Enable Input, determining motor direction, and a PWM signal into the Pulse Inputs, determining speed. Because of the internal Enable interlock, both Pulse Inputs may be connected together to a single-ended PWM signal.
6/91 Rev 1.1 2/94
Copyright (c) 1994
4
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1635/SG3635
CONNECTION DIAGRAMS/ORDERING INFORMATION (See Notes Below)
Package
5-PIN TO-66 METAL CAN R - PACKAGE
Part No. SG1635R/883B SG1635R SG3635R
Ambient Temperature Range -55C to 125C -55C to 125C 0C to 70C
Connection Diagram
OUTPUT +VS ENABLE
3 4 5 1 2
GND PULSE CASE IS GROUND Note: Case and tab are internally connected to substrate ground.
5-PIN TO-220 PLASTIC P - PACKAGE
SG3635P
0C to 70C
GND
5 4 3 2 1
PULSE OUTPUT GND ENABLE V+ Case + Tab are internally connected
Notes:
1. Contact factory for JAN and DESC part availability. 2. All parts are viewed from the top.
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
6/91 Rev 1.1 2/94
Copyright (c) 1994
LINFINITY
Microelectronics Inc.
5

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