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TLE9185QXV33 Datasheet(PDF) 50 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 50 Page - Infineon Technologies AG |
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50 / 192 page  Datasheet 50 Rev. 1.0 2021-01-21 TLE9185QXV33 BLDC Driver Gate Drivers Active gate control (AGC) The active gate control is configured by the control bits AGC[1:0]. The control scheme during the pre-charge and pre-discharge phases of: •The active MOSFET (EN_GEN_CHECK=1). • The PWM MOSFET (EN_GEN_CHECK=0). can be selected. The following settings are possible: • Adaptive gate control (AGC[1:0] = (1,0) or (1,1), see GENCTRL): In this mode a pre-charge current and a pre- discharge current are applied to the gate of the controlled MOSFET. These currents are used to regulate effective the turn-on and turn-off delays to the respective target values. • No adaptive gate control (AGC[1;0] = (0,0)): in this mode, the pre-charge and pre-discharge phases are deactivated. • No adaptive gate control (AGC[1;0] = (0,1)). In this mode: – During the pre-charge phase, the MOSFET is discharged with the configured current IPCHGINIT (HB_PCHG_INIT). – During the pre-discharge phase, the MOSFET is discharged with the configured current IPDCHGINIT (HB_PCHG_INIT). Note: It is recommended to configure tPCHGx < tHBxBLANK Active and tPDCHGx < tHBxCCP Active (Refer to TPRECHG and CCP_BLK) independently from the AGC settings. Active free-wheeling (AFW) The active free-wheeling is activated for HBx if these conditions are fulfilled: • AFWx = 1 (HBMODE) • HBx_PWM_EN = 1 (HBMODE) • PWM_NB = 0 If AFWx = 1, a cross-current protection time is applied to HBx (set by CCP_BLK) during the PWM operation. If AFWx = 0, no cross current protection is applied to HBx during the PWM operation. The active free-wheeling reduces the power dissipation of the free-wheeling MOSFET. If an active MOSFET is OFF, the opposite MOSFET of the same half-bridge is actively turned on. Refer to Figure 30 and Figure 31. |
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