Tool/software:
Hi,
Our BMS uses a bq76952 chip, and I’d like to clarify what the term “Setting” refers to in the following section of the datasheet.
Does it refer to the threshold in terms of the voltage across the shunt resistor?
For example, if our shunt resistor is 2 mΩ and the OCC (Over-Current Charge) threshold is set to 16 A, as shown below:
/*! * @par Protections:OCC:Threshold * - Type : U1 * - Min : 2 * - Max : 62 * - Default: 2 * - Unit : 2mV * @brief This parameter sets the Overcurrent in Charge Protection threshold for * the sense resistor voltage in units of 2mV. * @note 16 * 2mV = 32mV (16A across 2mOhm sense resistor) */ #define VAL_OCC_THRESHOLD 16U /*! @brief Size of VAL_OCC_THRESHOLD. */ #define SZ_OCC_THRESHOLD 1U
Should the Setting be 32, which would correspond to a ±4 mV tolerance category?
And if so, is it correct to say that our OCC limit is 16 A ±2 A, since 4 mV across a 2 mΩ shunt resistor equals 2 A?
Thank you,
Kyungjae Lee
