Programmable 45V/3A Step-Down-Module by MPS

Containing Internal Compensation and a Feedback Divider

The module integrates an internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET) to achieve high efficiency without requiring an external Schottky diode. With internal compensation and a feedback divider, the device provides a very compact solution that requires a minimal number of readily available, standard external components.

The MPM3593 is flexibly designed to support a 0.8-12V output voltage (V_OUT) that can be adjusted on the fly via an I²C serial interface. The voltage slew rate, switching frequency (f_SW), enable signal and power-save mode are also configurable via the I²C interface. This allows the user to optimise each output for different specifications.

During bench evaluations, different configurations can be easily obtained via the I²C interface instead of reworking external components. Once the optimal target configuration is reached, the settings can be permanently stored in memory. Current mode provides fast transient response and eases loop stabilisation. Full protection features include under-voltage lockout (UVLO), over-voltage protection (OVP), over-current protection (OCP) and over-temperature protection.

Features of MPM3593

• Wide 3.5-45V operating input voltage (VIN) range
• Up to 3A of continuous output current (IOUT) at output voltage (VOUT) ≤ 5V and 2A continuous IOUT at VOUT > 5V
• 12V VOUT at VIN ≤ 24V and 8V VOUT at VIN > 24V
• High-efficiency, synchronous mode module
• Power good (PG) and fault indications
• Over-voltage Protection (OVP)
• Over-current protection (OCP)
• Over-temperature protection
• Internal soft start (SS)
• Configurable address via resistor
• Multi-page one-time programmable (OTP) memory for permanent storage
• Available in a QFN-41 (6x8mm) package

Configurable Parameters Via the I²C Interface Include

• 0.8-12V VOUT fange
• Switching frequency (fSW)
• Compensation network
• Slope compensation
• Enable (EN) threshold
• Input under-voltage lockout (UVLO) threshold
• PG threshold
• Advanced asynchronous modulation (AAM) mode and continuous conduction mode (CCM) selection
• Light-load mode threshold
• Short-circuit protection (SCP) mode selection
• Current limit threshold
• OVP mode selection
• Input and output OVP threshold
• Over-temperature protection threshold
• Switching slew rate
• Output slew rate (soft-start (SS) time, tSS)
• SYNC input and output selection
• Phase shift
• Frequency dithering for low-EMI operatio

Your Contact Person

For more information, please contact Thomas Berner.