Datasheet STGAP2HD (STMicroelectronics) - 10

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STGAP2HD Control Inputs 6.3 Control Inputs
The device is controlled through the following logic inputs: • SD: active low shutdown input; • BRAKE: active low brake input; • INA, INB: active high logic inputs for channel A and channel B driver outputs; • iLOCK: used to enable or disable the interlocking protection. The operation of the driver IOs is described in Table 9.
Table 9. Inputs truth table (applicable when device is not in UVLO or "safe state") Input pins(1) Output pins iLOCK SD BRAKE INA INB GOUT_A GOUT_B
X L X X X Low Low X H L X X Low
HIGH
X H H L L Low Low X H H H L
HIGH
Low X H H L H Low
HIGH Interlocking
VDD H H H H Low Low GND H H H H
HIGH HIGH
1. X: Don’t care. A deglitch filter allows input signals with duration shorter than tdeglitch to be ignored, thereby preventing noise spikes potentially present in the application from generating unwanted commutations.
6.4 Watchdog
The isolated HV side has a watchdog function in order to identify when it is not able to communicate with LV side, for example because the VDD of the LV side is not supplied. In this case the output of the driver is forced in “safe state” until communication link is properly established again.
6.5 Thermal shutdown protection
The device provides a thermal shutdown protection. When junction temperature reaches the TSD temperature threshold, the device is forced in “safe state”. The device operation is restored as soon as the junction temperature is lower than TSD - Thys.
6.6 Standby function
In order to reduce the power consumption of both control interface and gate driving sides the device can be put in standby mode. In standby mode the quiescent current from VDD and VH_x supply pins is reduced to IQDDS and IQHS_x respectively, and the output remains in ‘safe state’ (the output is actively forced low). The way to enter standby is to keep the SD low while keeping the other input pins (INA, INB and BRAKE) high (“standby” value) for a time longer than tSTBY. During standby the inputs can change from the “standby” value. To exit standby, inputs must be put in any combination different from the “standby” value for a time longer than tstbyfilt , and then in the “standby” value for a time t such that tWUP< t < tSTBY. When the input configuration is changed from the “standby” value, the output is enabled and set according to inputs state after a time tawake.
DS13652
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Rev 1 page 10/23
Document Outline Cover image Product status link / summary Features Application Description 1 Block diagram 2 Pin description and connection diagram 3 Electrical data 3.1 Absolute maximum ratings 3.2 Thermal data 3.3 Recommended operating conditions 4 Electrical characteristics 5 Isolation 6 Functional description 6.1 Gate driving power supply and UVLO 6.2 Power-up, power-down and ‘safe state’ 6.3 Control Inputs 6.4 Watchdog 6.5 Thermal shutdown protection 6.6 Standby function 6.7 Interlocking function 7 Typical application diagram 8 Layout 8.1 Layout guidelines and considerations 8.2 Layout example 9 Testing and characterization information 10 Package information 10.1 SO-36W package information 11 Suggested land pattern 12 Ordering information Revision history Contents List of tables List of figures