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ZH6521

ZH6521

Integrated Single-Phase Sine Wave Driver Chip

Single-Phase BLDC Fan/Pump Driver

ZH6521 is a single-phase brushless DC motor driver chip featuring an integrated Hall sensor, half-bridge output, soft commutation and soft start control, along with protection functions including current limiting, short-circuit, overvoltage, overtemperature, and undervoltage protection. The chip supports PWM speed control (with optional speed closed-loop mode), configurable speed curves, and FG output feedback functionality.

data table ZH6521 Datasheet
Characteristics and advantages Ordering Information Product Application Documents and Resources

Characteristics and advantages

Three-in-one fan driver with integrated Hall sensor

3V~28V supply voltage, maximum operating current 0.8A

Low-current standby mode <10μA

Built-in power transistor on-resistance: 580mΩ

Commutation angle adjustment for optimized efficiency

Configurable speed curve

Configurable output waveform

Optional speed closed-loop

Optional FG/RD diagnostic output

PWM input frequency: 50Hz to 100kHz

Current limiting function

Short-circuit protection, over-temperature, over-voltage, under-voltage protection

Ordering Information

Product Application

Documents and Resources

Semiment Product Selection Guide

Selection Guide English version
2025-10-22

ZH6521 Datasheet

Datesheet download
2025年 10月 24日

Application Note for ZH6521

Application Note

video

ZH6521 is a single-phase brushless DC motor driver chip featuring an integrated Hall sensor, half-bridge output, soft commutation and soft start control, along with protection functions including current limiting, short-circuit, overvoltage, overtemperature, and undervoltage protection. The chip supports PWM speed control (with optional speed closed-loop mode), configurable speed curves, and FG output feedback functionality.
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