BTC50010-1TAA_15 Datasheet, PDF (16/31 Pages) Infineon Technologies AG – High-Side Power Connector

BTC50010-1TAA
Functional Description
5.2
Gate Driver Functionality
BTC50010-1TAA has an embedded gate driver. It is used to drive the gate of an integrated power DMOS. The
gate driver charges and discharges the gate of the DMOS with current I_CHARGE and I_DISCHARGE. Refer to Figure 10,
the gate driver is accessible via the CP pin. BTC50010-1TAA is suitable for driving an external MOSFET (e.g.
BTC30010-1TAA) in parallel to halve the connect resistance or in anti serial to block the reverse current. It allows
also to connect a capacitor C_CP to buffer the V_CP voltage during cranking time.
V_S
V_CP
I_CHARGE
I_DISCHARGE
S₁
OUT
CP
Figure 10 Gate Driver Block Diagram
During Switch ON, BTC50010-1TAA charges the Gate capacitor of an external DMOS or the capacitor C_CP which
is connected between CP and OUT pin. During switch OFF, when VOUT decreases to around 2.5V below V_S, the
internal switch S₁ between gate and source will switch ON to reduce the high energy consuming switch OFF time.
Additionally, when S₁ is switched ON, the device is much more robust against electromagnetic disturbance which
could come from V_S or output pin to ensure the device doesn’t suffer from an unwanted switch ON.
Data Sheet
Connect FET
16
1.3, 2015-02-06