tle8242 Infineon Technologies Corporation, tle8242 Datasheet - Page 6

• Manufacturer Part Number: tle8242
• Description: 8 Channel Fixed Frequency Constant Current Control With Current Profile Detection
• Manufacturer: Infineon Technologies Corporation

Figure 1
1.3.2
During constant current operation, the POSx and NEGx pins must be connected to the circuit in the configuration
shown in
Note: An external recirculation diode is required in this configuration otherwise the IC may be damaged.
Figure 2
During constant current operation, the PWM control signal driven at the OUTx pin is controlled by the control loop
shown in
Data Sheet
Figure
Figure
External Circuit Diagram for Direct PWM Mode Operation
Constant Current Mode Operation
External Circuit Diagram for Constant Current Mode Operation
3. The PWM Frequency is programmed via the SPI message # 8. In this message the main period
2.
POSx
NEGx
OUTx
NEGx
POSx
OUTx
Vs
0.2 Ω
0.2 Ω
6
Electronic
10nF
Module
Electronic
10nF
Module
Vs
Vs
Rev. 1.0, 2009-02-25
TLE8242
Overview