Other Parts Discussed in Thread: DRV8262
Tool/software:
Hello,
I want to connect a TEC module to the DRV8873S.
First, I am testing the DRV8873S for its intended purpose, which is to control a DC motor.
My test setup is as follows:
- Laboratory power supply +24V
- DRV8873SEVM evaluation board
- DC motor
The driver gives me the expected result.
In a second step, I connect my Peltier module. My test setup is as follows:
- DRV8873SEVM evaluation board
- LC filter (schematic used DRV8262)
- L = 22µH, C = 44µF
- Cutoff frequency 5.1 kHz
- TEC module P10,31,08,L1,W.4.5 by LAIRD
- Test software: operation mode PWM
The driver goes into open load detection error and my filter whistles.
In a third step, with the same test setup as before, I remove resistor R30 (see evaluation board schematic of the DRV8873S) to connect a GBF and apply a PWM with a frequency of 100kHz to the EN/IN1 input.
The driver goes into Over Temp Shutdown error and my filter whistles.
Could you help me find an operational setup to control the TEC module?
