Monolithic Power Systems (MPS) MP6603 Dual Full-Bridge Motor Drivers
Monolithic Power Systems (MPS) MP6603 Dual Full-Bridge Motor Drivers incorporate low RDS(on) MOSFETs to deliver efficient and reliable performance. The driver's high level of integration, combined with a compact 4mm × 5mm QFN‑25 package, makes the MPS MP6603 motor drivers a cost‑effective choice for both brushed DC motor and stepper motor applications. Designed to operate from an 8V to 55V supply, the MP6603 drivers provide up to 5A peak current per full bridge, with actual current capability dependent on ambient conditions and PCB thermal design. Each half‑bridge includes its own independent ground pin, allowing accurate current measurement through an external shunt resistor.
These MPS devices support two configurable control interfaces: a PWM input interface and an indexer interface, selectable via the IN_SEL pin. The components also integrate comprehensive protection and diagnostic features, including over‑current protection, short‑circuit protection, under‑voltage protection, and thermal shutdown. Compact, versatile, and robust, the MP6603 is well‑suited for a wide range of motor‑control designs.
Features
- Wide 8V to 55V operating input voltage (VIN) range
- 2x internal full-bridge drivers
- Selectable input interface
- Simple Pulse Width Modulation (PWM) input
- Indexer input
- Indexer interface offers full-, half-, quarter-, and eighth-step modes by setting the M1 and M2 pins
- Low on resistance [RDS(ON)]
- 65mΩ high-side MOSFET (HS-FET)
- 50mΩ low-side MOSFET (LS-FET)
- Currrent
- Up to 5A in full-bridge mode
- Up to 10A in parallel mode
- Up to 100kHz PWM operating frequency
- Independent ground pins for each half-bridge
- Overcurrent protection (OCP)
- Thermal shutdown
- Under-voltage lockout (UVLO)
- Internal charge pump
- Fault indication output
- Available in a space-saving QFN-25 (4mm x 5mm) package
- Lead-free, Halogen-free, and RoHS-compliant
Applications
- Bipolar stepper motors
- Brushed DC motor drivers
Specifications
- 8V to 55V operating supply voltage range
- 7.5V maximum turn-on threshold
- 0.3V typical turn-on hysteretic voltage
- 3.29W maximum continuous power dissipation
- IC supply
- 1μA maximum shutdown current
- 7mA to 10mA maximum operating current range
- Input logic (PWMx, M1, M2, EN)
- 0.8V maximum input logic low threshold
- 2V minimum input logic high threshold
- ±20μA input high/low current range
- 500kΩ typical input pull-down resistance
- 100kHz maximum externally applied PWM frequency
- nFault output (open-drain output)
- 0.5V maximum output low voltage
- 1µA maximum output high leakage current
- Power MOSFETs
- 85mΩ maximum HS-FET on resistance
- 65mΩ maximum LS-FET on resistance
- 0.9V maximum body diode forward voltage
- 400ns typical minimum on time
- 350ns maximum propagation delay on time
- 250ns maximum propagation delay off time
- 220ns maximum output rise time
- 270ns maximum output fall time
- Current control
- 20.5µs to 24.5µs off-time range
- 3.8A to 4.2A peak current regulation level range
- 1.75V to 1.85V ISET pin voltage range
- 10.81µA/A to 12.19µA/A ISET pin current ratio range
- 1000ns typical blanking time
- ±5% or ±10% current trip accuracy
- Protections
- 7A to 11.5A over-current threshold range
- 2ms typical OCP retry time
- 500ns typical over-current deglitch time
- 55.3V to 59.5V input OVP threshold range
- 1000mV typical input OVP hysteresis
- +160° typical thermal shutdown
- +35°C typical thermal shutdown hysteresis
- 1800kHz to 2600kHz charge pump frequency range
- -40°C to +125°C operating temperature range
- +150°C maximum junction temperature
- +260°C maximum lead temperature
- ±2kV maximum ESD protection (HBM and CDM)
- 8°C/W to 38°C/W thermal resistance range
Typical Application
Functional Block Diagram
