| Part number | SQ55560QFQ |
|---|---|
| Vin (max) (V) | 70 |
| Vin (min) (V) | 28 |
| RDS(on) (HS + LS) (mΩ) | |
| Peak output current (A) | |
| Sleep current (µA) | 62 |
| Integrated FETs(Yes/No) | No |
| Motor with control method | BLDC with sensorless 180 degree modulation |
| Control interface | I2C, Analog, PWM |
| Features | Support 100% PWM Output, Integrated Buck, Code-free sensor-less control, Sine wave current, Bus current sample, Configurable MOS driver current, Rotor lock protection, Support tailwind and reverse startup, Current speed and power limit, 10-point speed curve setting |
| Operating temperature range(°C) | -40 to 105 |
| Package | QFN4×4-32 |
| Functional safety category |
The SQ55560 is a 90V gate driver designed for three-phase sensorless BLDC fan applications. It integrates a sinusoidal current control algorithm for BLDC motors, along with a flexible closed-loop control system.
The SQ55560 features built-in Multi-Time Programming (MTP) memory for storing user configuration data and speed curve profiles tailored to specific application scenarios. This design minimizes programming requirements and eliminates the need for a microprocessor-based system.
The device integrates multiple protection mechanisms (soft-start, short-circuit detection, undervoltage and overvoltage protection, thermal shutdown) for reliable operation.
The device is available in a 4×4 mm QFN package.
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SQ55560QFQ is intended for evaluating 90V Gate Driver for three-Phase Sensorless BLDC Fan SQ55560QFQ.
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-03-06 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |
