TLE7230R Infineon Technologies, TLE7230R Datasheet - Page 6

• Manufacturer Part Number: TLE7230R
• Description: IC SW SMART OCTAL LOWSIDE PDSO36
• Manufacturer: Infineon Technologies
• Type: Low Sider

Specifications of TLE7230R

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 800 mOhm
• Current - Peak Output: 2A
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-36
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Other names: SP000067170; SP000311685; TLE7230R; TLE7230RNT; TLE7230RT; TLE7230RT; TLE7230RTR; TLE7230RXT

Functional Description
The TLE 7230 R is an octal low-side power switch with a serial peripheral interface (SPI) for control and
diagnostic feedback of the 8 power DMOS switches. The power transistors are protected
load (current limitation), overtemperature and overvoltage (by active zener clamping). The diagnostic
logic recognizes a fault condition which can be read out via the serial diagnostic output (SO).
Output Stage Control: Parallel Control or SPI Control
The Output stages can be controlled by parallel Inputs or by SPI commands. The IC can be pro-
grammed via SPI to switch the outputs according to the corresponding SPI command bit or to a combi-
nation of SPI bit and parallel input signal. The Boolean logic combination of parallel and serial signal is
programmable by SPI to logic "AND" or "OR". The respective SPI data bits are active high and the paral-
lel Inputs are active high or low according to the PRG pin (see pin description).
Boolean operation:
The logic combination of the parallel and the
serial input signal can be configured by an
SPI command for each of the 8 channels
individually. Logic "AND" or logic "OR" is pos-
sible.
Map able parallel input (IN 4):
The parallel input 4 (IN4) can be defined via SPI command as parallel input for one or more power out-
puts. Depending on the Input Map Register this input can be used to control one up to eight of the paral-
lel outputs. Default operation: IN4 is the parallel input for channel 4.
Switching speed / Slew rate:
The switching speed / slew rate of each individual channel can be configured by SPI for slow or fast
switching speed (max. 15µs or 60µs).
Overtemperature Behavior:
Each channel has an overtemperature sensor and is individually protected against overtemperature.
As soon as an overtemperature event occurs, the channel is immediately turned off and the overtem-
perature information is reported by diagnosis. In this case, there are two different behaviors of the af-
fected channel that can be selected by SPI (for all channels individually).
4
used in normal operation or permanently.
V2.0
Signal logic channel 1 to 3
The integrated protection functions help to prevent damage to the device under fault conditions and may not be
Input buffer
IN n (1..3)
Input buffer
IN 4
Auto restart: as long as the input signal of the channel remains on (e.g. parallel input high) the
channel turns automatically on again after cooling down.
Latching: In the event of an overtemperature shutdown, the channel stays off until the overtem-
perature latch is reset by a new LàH transition of the input signal.
serial controll register
Channel 1 to 3
Input Map register
&
1
Boolean register
Output Latch
Page
parallel in serial in
off
off
on
on
Signal logic channel 4 to 8
Input buffer
IN 4
6
D a t a S h e e t T L E 7 2 3 0 R
serial controll register
Channel 4 to 8
off
on
off
on
&
1
Output "OR"
off
on
on
on
Input Map register
Boolean register
Output "AND"
off
off
off
on
4
against over-
2005-10-05
Output Latch