L6398D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Motor driver
• Characteristics: High voltage, high current, and high-speed power MOSFET gate driver
• Package: PowerSO-36 package
• Essence: The L6398D is a motor driver IC designed to drive both the high-side and low-side power MOSFETs in a three-phase brushless DC motor. It provides high-performance motor control with advanced protection features.
• Packaging/Quantity: The L6398D is available in a PowerSO-36 package and is typically sold in reels of 2500 units.

Specifications

• Operating Voltage Range: 8V to 52V
• Output Current: Up to 2A
• Switching Frequency: Up to 100 kHz
• Protection Features: Overcurrent protection, undervoltage lockout, thermal shutdown, cross-conduction prevention

Detailed Pin Configuration

The L6398D has a total of 36 pins. Here is a detailed pin configuration:

1. VCC: Positive supply voltage
2. GND: Ground reference
3. VREF: Reference voltage for internal circuitry
4. VCP: Charge pump capacitor connection
5. BOOT: Bootstrap capacitor connection
6. PHASE_U: Phase U output
7. PHASE_V: Phase V output
8. PHASE_W: Phase W output
9. VSENSE_U: Sense resistor connection for phase U
10. VSENSE_V: Sense resistor connection for phase V
11. VSENSE_W: Sense resistor connection for phase W
12. VCPH: Charge pump output voltage
13. VCP_L: Low-side charge pump voltage
14. CP_DIS: Charge pump disable input
15. EN_U: Enable input for phase U
16. EN_V: Enable input for phase V
17. EN_W: Enable input for phase W
18. GATE_U: Gate driver output for phase U
19. GATE_V: Gate driver output for phase V
20. GATE_W: Gate driver output for phase W
21. VBOOT_U: Bootstrap voltage for phase U
22. VBOOT_V: Bootstrap voltage for phase V
23. VBOOT_W: Bootstrap voltage for phase W
24. VREF_U: Reference voltage for phase U
25. VREF_V: Reference voltage for phase V
26. VREF_W: Reference voltage for phase W
27. VSENSE_UH: High-side sense resistor connection for phase U
28. VSENSE_VH: High-side sense resistor connection for phase V
29. VSENSE_WH: High-side sense resistor connection for phase W
30. VCPH_U: Charge pump output voltage for phase U
31. VCPH_V: Charge pump output voltage for phase V
32. VCPH_W: Charge pump output voltage for phase W
33. VCP_LU: Low-side charge pump voltage for phase U
34. VCP_LV: Low-side charge pump voltage for phase V
35. VCP_LW: Low-side charge pump voltage for phase W
36. CPDISUVW: Charge pump disable input for all phases

Functional Features

• High-Side and Low-Side MOSFET Driver: The L6398D can drive both the high-side and low-side power MOSFETs in a three-phase brushless DC motor, providing efficient motor control.
• Advanced Protection Features: The IC includes overcurrent protection, undervoltage lockout, thermal shutdown, and cross-conduction prevention to ensure safe operation of the motor and prevent damage to the driver.
• Wide Operating Voltage Range: The L6398D can operate within a voltage range of 8V to 52V, making it suitable for various motor applications.
• High Output Current: With an output current capability of up to 2A, the IC can handle high-power motors.
• Fast Switching Frequency: The L6398D supports switching frequencies of up to 100 kHz, enabling precise control of motor speed and torque.

Advantages and Disadvantages

Advantages: - Efficient and reliable motor control - Comprehensive protection features - Wide operating voltage range - High output current capability - Fast switching frequency for precise control

Disadvantages: - Requires external components such as sense resistors and bootstrap capacitors - Limited to three-phase brushless DC motor applications

Working Principles

The L6398D operates by receiving control signals from a microcontroller or motor controller. It generates the necessary gate drive signals to control the high-side and low-side power MOSFETs in a three-phase brushless DC motor. By controlling the timing and duration