The OB6625 is a highly integrated, high-performance, low-cost 3-phase brushless DC motor (BLDC) or permanent magnet synchronous motor (PMSM) control IC, which requires only a small number of peripheral components to build a complete field oriented control (FOC) circuit. It integrates 32bit ARM Cortex-M0 MCU, 3P+3N full-bridge driver, and high-precision 5V regulated power supply.

The OB6625 provides complete chip protection and external motor drive current protection, including chip working power supply under-voltage protection, over-voltage protection, over-temperature protection, and bridge arm anti-pass-through protection. The drive circuit has a built-in dead zone; Motor drive overcurrent protection, etc. The built-in MCU can work at a frequency of 72Mhz, provides 32kB FLASH and 4kB SRAM, integrates a coordinate rotation digital computer (Cordic) and a multiplicative division unit (MDU), optimizes pulse width modulation (PWM), operational amplifier (Amplifier), analog comparator (Comparator), analog digital sampler (ADC), and linkage between different modules, which is easy to develop high-performance algorithms.

The OB6625 is used in low-cost, high-performance, high-efficiency BLDC/PMSM drive circuits, and can be easily constructed with current loops and speed loops by using a small number of peripheral components. Flexibility and low cost.

The OB6625 is available in TSSOP20/TSSOP24/QFN28 packages, which facilitates PCB miniaturization designs.

apply

· 5V to 28V DC input, universal BLDC/PMSM controller, including fan/pump/massager/motion mechanism, etc.

characteristic

Three-phase P+N MOSFET driver

· On the high side, the P-MOSFET drives up to 40V

· The high-side P-MOSFET drives 11V and drives 0.3/0.22A

· The low-voltage N-MOSFET drives -11V and drives 0.43/0.6A

· Low-voltage driver power supply under-voltage protection (UVLO), over-voltage protection (OVP)

· Built-in dead zone

· Built-in bridge arm pass-through logic

LDO

· The input voltage is up to 35V

· The output voltage accuracy is 5V±2%, and the maximum output current is 100mA

· Built-in short-circuit protection and over-temperature protection

ARM Cortex-M0 core

· 72MHz with built-in nested vector interrupt controller (NVIC)

· Wide operating voltage range: 1.8V to 5.5V

· On-chip flash programming memory of 32KB

· 4KB SRAM

· 1 set of 32bit timer/counter; 2 sets of 16-bit timers/counters

· 6-channel 16-bit PWM

· 5-channel 12-bit ADC

· 3 sets of 8MHz, 10V/us operational amplifiers

· 3 groups of universal comparators

· Serial In-Circuit Debugging (SWD)

· Coordinate Rotation Digital Computer (Cordic)

· Multiplication and Division Unit (MDU)