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TLE6208-3G
Smart Motorbridges + Driver ICs
Triple-Half-Bridge TLE 6208-3 GOverview
1.1FeaturesThree Half-BridgesOptimized for DC motor management applicationsDelivers up to 0.6 A continuous, 1.2 A peak currentRDSON; typ. 0.8 Ω, @25°C per switchOutput: short circuit protected and diagnosisOvertemperature-Protection with hysteresis
and diagnosisStandard SPI-Interface/Daisy chain capableVery low current consumption in stand-by (Inhibit)
mode (typ. 10μA for power and 2μA for logic
supply, @25°C)Over- and Undervoltage-LockoutCMOS/TTL compatible inputs with hysteresisNo crossover currentInternal clamp diodesEnhanced power P-DSO-Package Programming compatibility to the TLE5208-6G
Functional DescriptionThe TLE 6208-3 G is a fully protected Triple-Half-Bridge-Driver designed specifically for
automotive and industrial motion control applications. The part is based on the Siemens
power technology SPT® which allows bipolar and CMOS control circuitry in accordance
with DMOS power devices existing on the same monolithic circuitry.
In motion control up to 2 actuators (DC-Motors) can be connected to the 3 halfbridge-
outputs (cascade configuration). Operation modes forward (cw), reverse (ccw), brake
and high impedance are controlled from a standard SPI-Interface. The possibility to
control the outputs via software from a central logic, allows limiting the power dissipation.
So the standard P-DSO-14-package meets the application requirements and saves
PCB-Board-space and cost. Furthermore the build-in features like Over- and
Undervoltage-Lockout, Over-Temperature-Protection and the very low quiescent current
in stand-by mode opens a wide range of automotive- and industrial-applications.
1.2 Pin Configuration (top view)
Figure1
1.3Pin Definitions and Functions
1.4Functional Block Diagram
Figure2Block Diagram
1.5Circuit Description
Figure 2 shows a block schematic diagram of the module. There are 3 halfbridge drivers
on the right-hand side. An HS driver and an LS driver are combined to form a halfbridge
driver in each case. The drivers communicate via the internal data bus with the logic and
the other control and monitoring functions: undervoltage (UV), overvoltage (OV),
overtemperature (TSD), charge pump and fault detect.
Two connection interfaces are provided for supply to the module: All power drivers are
connected to the supply voltage VS. These are monitored by overvoltage and
undervoltage comparators with hysteresis, so that the correct function can be checked
in the application at any time.
The logic is supplied by the VCC voltage, typ. with 5V. The VCC voltage uses an internally
generated Power-OnReset (POR) to initialize the module at power-on. The advantage
of this system is that information stored in the logic remains intact in the event of short-
term failures in the supply voltage VS. The system can therefore continue to operate
following VS undervoltage, without having to be reprogrammed. The “undervoltage”
information is stored, and can be read out via the interface. The same logically applies
for overvoltage. “Interference spikes” on VS are therefore effectively suppressed.
The situation is different in the case of undervoltage on the VCC connection pin. If this
occurs, then the internally stored data is deleted, and the output levels are switched to
high-impedance status (tristate). The module is initialized by VCC following restart
(Power-OnReset=POR).
The 16-bit wide programming word or control word (see Table Input Data Protocol) is
read in via the DI data input, and this is synchronized with the clock input CLK. The status
word appears synchronously at the DO data output (see Table Diagnosis Data
Protocol). It is also possible to connect two TLE 6208-3 G in a daisy chain configuration.
The DO data output of one device is connected with the DI data input of the second
device. In this configuration these two devices are controlled with a single CSN chip
select and using a 32-bit wide control word.
The transmission cycle begins when the chip is selected with the CSN input (H to L). If
the CSN input changes from L to H then the word which has been read in becomes the
control word. The DO output switches to tristate status at this point, thereby releasing the
DO bus circuit for other uses.
The INH inhibit input can be used to cut off the complete module. This reduces the
current consumption to just a few μA, and results in the loss of any data stored. The
output levels are switched to tristate status. The module is reinitialized with the internally
generated POR (Power-On Reset) at restart.
This feature allows the use of this module in battery-operated applications (vehicle body
control applications).
Every driver block from DRV1 to 3 contains a low-side driver and a high-side driver. Both
drivers are connected internally to form a half-bridge at the output. This reduction of
output pins was necessary to meet the small P-DSO-14 package.
When commutating inductive loads, the dissipated power peak can be significantly
reduced by activating the transistor located parallel to the internal freewheeling diode. A
special, integrated “timer” for power ON/OFF times ensures that there is no crossover
current.
Input Data ProtocolDiagnosis Data Protocol
H=ONOFF
H=ONOFF
Fault Result Table=failure;=no failure.
Note:Stresses above those listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
2.1Absolute Maximum Ratings
Note:Current limits are mentioned in the overcurrent section of electrical charateristics
Note:In the operating range, the functions given in the circuit description are fulfilled.
2.2Operating Range
Thermal Resistances
2.3Electrical Characteristics
8Vunless otherwise specified
Current Consumption
Over- and Under-Voltage Lockout
Outputs OUT1-3
Static Drain-Source-On Resistance
Leakage Current
Overcurrent
2.3Electrical Characteristics (cont’d)
8Vunless otherwise specified
