EVAL1ED3122MX12HTOBO1

AN2019-22 AN2019-22 EVAL-1ED3122Mx12H Evaluation board description About this document Scope and purpose The gate driver evaluation board EVAL-1ED3122Mx12H with the 1ED3122MU12H or 1ED3122MC12H gate driver IC demonstrates the functionality and key features of the Infineon EiceDRIVER Compact gate driver ICs. The boards contain a short circuit protection which is described in more detail in the key feature section of this document. Details about the EiceDRIVER Compact 1ED3122MU12H or 1ED3122MC12H can be found at our product pages at AN2019-22 EVAL-1ED3122Mx12H Evaluation board description 1 Electrical description 1 Electrical description 1.1 Key features The evaluation board EVAL-1ED3122Mx12H is intended for the product feature evaluation of the Infineon EiceDRIVER Compact 1ED3122MU12H or 1ED3122MC12H in an application circuit. The key elements of the board and the product are listed here. Evaluation board in half-bridge configuration with two gate driver ICs to drive power switches such as IGBTs and SiC MOSFETs. The switch type can be freely chosen as seen in Figure 1 Additional gate driver IC for isolated over-current feedback signal from high voltage side to logic control side Fast operational amplifier used as comparator for over-current detection Figure 1 EVAL-1ED3122Mx12H top view The board has a size of 85 x 55 x 15 mm without any power switch assembled. This board is best suited for so-called double-pulse testing. However, it requires additional considerations on thermal and power load for continuous operation. An additional high-voltage DC blocking capacitor at the high- voltage supply is recommended. The low-voltage interface can be controlled by a pulse generator, a microcontroller or other digital circuits. For safe operation, a fast over-current detection and protection circuit is implemented with a galvanically isolated feedback path to the low-voltage input side. The input side flip-flop latches the over-current event information. This circuit will report the fault and turn off both gate driver ICs. The S1 button, also labeled with RESET, clears the flip-flop to enable the gate driver ICs again. 1.2 Absolute maximum ratings, operating conditions and supply voltages The selected components on this evaluation board as well as the gate driver ICs have maximum ratings and operating conditions to avoid damaging the individual parts and the evaluation board overall. Table 1 Absolute maximum ratings Pin/parameter Abs. Max. Unit Note name +15V IN -0.2 20 V input, support supply voltage VCC1 -0.2 5.3 V input, gate driver IC supply voltage Application Note 2 v1.0 2019-11-06