MCP8025/6
3-Phase Brushless DC (BLDC) Motor Gate Driver
with Power Module, Sleep Mode, and LIN Transceiver
Features
• AEC-Q100 Grade 0 Qualified
• Quiescent Current:
- Sleep Mode: 5 µA Typical
- Standby Mode: < 200 µA
• LIN Transceiver Interface (MCP8025):
- Compliant with LIN Bus Specifications 1.3,
2.2 and SAE J2602
- Supports baud rates up to 20K baud
- Internal pull-up resistor and diode
- Protected against ground shorts
- Protected against loss of ground
- Automatic thermal shutdown
- LIN Bus dominant time-out
• Three Half-Bridge Drivers Configured to Drive
External High-Side NMOS and Low-Side NMOS
MOSFETs:
- Independent input control for high-side
NMOS and low-side NMOS MOSFETs
- Peak output current: 0.5A @ 12V
- Shoot-through protection
- Overcurrent and short-circuit protection
• Adjustable Output Buck Regulator (750 mW)
• Fixed Output Linear Regulators:
- 5V @ 30 mA
- 12V @ 30 mA
• Operational Amplifiers:
- one in MCP8025
- three in MCP8026
• Overcurrent Comparator with DAC Reference
• Phase Comparator with Multiplexer (MCP8025)
• Neutral Simulator (MCP8025)
• Level Translators (MCP8026)
• Input Voltage Range: 6V to 40V
• Operational Voltage Range:
- 6V to 19V (MCP8025)
- 6V to 28V (MCP8026)
• Buck Regulator Undervoltage Lockout: 4.0V
• Undervoltage Lockout (UVLO): 5.5V (except Buck)
• Overvoltage Lockout (OVLO)
- 20V (MCP8025)
- 32V (MCP8026)
• Transient (100 ms) Voltage Tolerance: 48V
• Extended Temperature Range (T
A
): -40 to +150°C
• Thermal Shutdown
2014-2017 Microchip Technology Inc.
Applications
• Automotive Fuel, Water, Ventilation Motors
• Home Appliances
• Permanent Magnet Synchronous Motor (PMSM)
Control
• Hobby Aircraft, Boats, Vehicles
Description
The MCP8025/6 devices are 3-phase brushless DC
(BLDC) power modules containing three integrated
half-bridge drivers capable of driving three external
NMOS/NMOS transistor pairs. The three half-bridge
drivers are capable of delivering a peak output current
of 0.5A at 12V for driving high-side and low-side NMOS
MOSFET transistors. The drivers have shoot-through,
overcurrent and short-circuit protection. A Sleep mode
has been added to achieve a typical “key-off” quiescent
current of 5 µA.
The MCP8025 device integrates a comparator, a buck
voltage regulator, two LDO regulators, power
monitoring comparators, an overtemperature sensor, a
LIN transceiver, a zero-crossing detector, a neutral
simulator and an operational amplifier for motor current
monitoring. The phase comparator and multiplexer
allow for hardware commutation detection. The neutral
simulator allows commutation detection without a
neutral tap in the motor. The buck converter is capable
of delivering 750 mW of power for powering a
companion microcontroller. The buck regulator may be
disabled if not used. The on-board 5V and 12V
low-dropout voltage regulators are capable of
delivering 30 mA of current.
The MCP8026 replaces the LIN transceiver, neutral
simulator and zero-crossing detector in MCP8025 with
two level shifters and two additional op amps.
The MCP8025/6 operation is specified over a
temperature range of -40°C to +150°C.
Package options include 40-lead 5x5 QFN and 48-lead
7x7 TQFP with Exposed Pad (EP).
DS20005339C-page 1
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