ZHCSLJ5D February 2022 – March 2023 TIOL112 , TIOL1123 , TIOL1125
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagrams
- 8.3
Feature Description
- 8.3.1 Wake-Up Detection
- 8.3.2 Current Limit Configuration
- 8.3.3 Current Fault Detection, Indication and Auto Recovery
- 8.3.4 Thermal Warning, Thermal Shutdown
- 8.3.5 Fault Reporting (NFAULT)
- 8.3.6 Transceiver Function Tables
- 8.3.7 The Integrated Voltage Regulator (LDO)
- 8.3.8 Reverse Polarity Protection
- 8.3.9 Integrated Surge Protection and Transient Waveform Tolerance
- 8.3.10 Power Up Sequence (TIOL112)
- 8.3.11 Undervoltage Lock-Out (UVLO)
- 8.4 Device Functional Modes
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
9.2.2.3 Driving Inductive Loads
The TIOL112(x) family is capable of magnetizing and demagnetizing large inductive loads. These devices contain internal circuitry that enables fast and safe demagnetization when configured as either P-switch or N-switch mode.
In P-switch configuration, the load inductor L is magnetized when the CQ output is driven high. When the PNP is turned off, there is a significant amount of negative inductive kick back at the CQ pin. This voltage is safely clamped internally at about -15 V.
Similarly, in N-switch configuration, the load inductor L is magnetized when the CQ output is driven low. When the NPN is turned off, there is a significant amount of positive inductive kick back at the CQ pin. This voltage is safely clamped internally at about 15 V.
The equivalent protection circuits are shown in Figure 9-2 and Figure 9-3. The minimum value of the resistive load R can be calculated as:
Figure 9-2 P-Switch Mode
Figure 9-3 N-Switch Mode