BTS5590G Infineon Technologies, BTS5590G Datasheet - Page 4

• Manufacturer Part Number: BTS5590G
• Description: IC LED DRIVER DSO-36
• Manufacturer: Infineon Technologies

Specifications of BTS5590G

• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 5
• Internal Driver: Yes
• Type - Primary: Automotive
• Frequency: 1MHz
• Voltage - Supply: 3.8 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: DSO-36
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -
• Current - Output / Channel: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: BTS5590G; BTS5590GTR; SP000306869

Figure 2
this the following software strategy can be used to ensure a correct interpretation of the error flags.
3.2
The possible software strategy depends on the minimum off state time
operation. According to the parameter
The following flow chart shows a possible way to implement a software strategy for PWM-operation:
Figure 3
Application Note
a)
b)
t
double readout of the standard diagnosis is required.
t
Immediately after the first readout the second readout of the standard diagnosis has to be done. The
according error flag information can be used for further interpretation. The two readouts have to be done in
the same on-phase of the channel (no switch off between the two readouts).
off state application
off state application
shows that the activated over load flag is reset by the readout of the standard diagnosis. According to
Legend:
Software Strategy during PWM-Operation
Flow Chart for the correct evaluation of the error flags during PWM-Operation
Readout standard
Store data
diagnosis
≤
Decision
>
Process
Display
t
t
off state_min
off state_min
: The error flags of the first readout after the activation have to be abolished.
: The error flags of a single readout of the standard diagnosis can be used. No
Yes
t
off state application
according to RMS-
Activate channel x
voltage control
Set duty cycle
≤
t
<
o ff state _a pp lic.
t
off state_ min
*
Start error
handling
two software strategies can be defined:
Functionality of Over Load and Short Circuit Detection
4
No
* Two or more channels can be
activated at the same time as well!
Yes
Over load or
short circuit
Readout standard
t
off state_a pp lic.
t
o n sta te _ap plic.
diagnosis
ERRn=1
BTS5590G, BTS5576G, BTS5566G
Store
and
t
off state
No
Switch off channel
x after t
of the application during PWM-
o n sta te _ap pl.
Store ERR-
Application Note
Flag
1.0, 2008-07-14