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The MP6543H family of products (MP6543H, MP6543H-A, and MP6543H-B) are three-phase brushless DC motor drivers. They integrate three half-bridges, consisting of six N-channel power MOSFETs, as well as pre-drivers, gate drive power supplies, and current-sense amplifiers.
The MP6543H has enable (EN) and PWM inputs for each half-bridge. The MP6543H-A has separate high-side (HS) and low-side (LS) inputs, while the MP6543H-B has Hall-effect sensor inputs. Otherwise, these three devices are similar. References to the MP6543H in this document apply to the MP6543H-A and MP6543H-B, unless otherwise noted.
The MP6543H delivers up to 2A of continuous current (depending on thermal and PCB conditions) with an adjustable over-current protection (OCP) threshold. It uses an internal charge pump to generate the gate drive supply voltage for the high-side MOSFETs, and a trickle charge circuit to maintain a sufficient gate drive voltage to operate at 100% duty cycle.
Internal safety features include thermal shutdown, under-voltage lockout (UVLO), and over-current protection (OCP).
The MP6543H is available in a QFN-24 (3mmx4mm) package with an exposed thermal pad.
- Wide 3V to 22V input voltage range to cover different applications
- Integrated bidirectional current-sense amplifiers lower the solution cost
- UVLO, thermal shutdown, OCP and programmable threshold ensure safety for downstream devices
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Features & Benefits
- 3V to 22V Operating Supply Voltage
- Three Integrated Half-Bridge Drivers
- 2A Continuous Output Current
- MOSFET On Resistance: 110mΩ per FET
- MP6543H: PWM & ENBL Inputs
- MP6543H-A: HS & LS Inputs
- MP6543H-B: Hall-Element Inputs
- Built-In 3.3V, 100mA LDO Regulator and Internal Charge Pump for 100% Duty Cycle
- Integrated Bidirectional Current-Sense Amplifier
- Automatic Synchronous Rectification and UVLO, Thermal Shutdown, OCP
Active Part Numbers:
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
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