MPQ18913

The MPQ18913 is a high-frequency half-bridge transformer driver. It is ideal for use as the primary-side MOSFET in isolated power supplies for biasing silicon carbide (SiC) field-effect transistors (FETs), silicon FETs, and insulated gate bipolar transistors (IGBTs). The MPQ18913 simplifies an isolated biased supply’s design by integrating the control, switching power stage, and protection circuitry in one device. This typology supports designs with a high isolation voltage and small interwinding capacitance.

The MPQ18913 features soft switching and an optional frequency spread spectrum (FSS) to optimize EMI performance. It supports a wide 5V to 30V input voltage (VIN) range, and can survive surges of up to 50V. It also integrates two switching MOSFETs that are rated for 300mA of average input current (IIN).

The device has a wide 400kHz to 5MHz configurable switching frequency (fSW) range, which reduces the solution size and optimizes efficiency in resonant topologies (e.g. LLC converters).

Full safety and protection features include input over-voltage protection (OVP), over-current protection (OCP), and fault indication. The device’s built-in soft start (SS) controls the inrush current during start-up.

The MPQ18913 is available in QFN-10 (2mmx2.5mm) package with wettable flanks.

Features

Advanced Protection Features:

• Over-Current Protection (OCP)
• Short-Circuit Protection (SCP)
• Over-Voltage Protection (OVP)
• Over-Temperature Protection (OTP)
• Fault Reporting
• Under-Voltage Lockout (UVLO)
• Supports Up to 5kV Isolation Voltage

Low EMI:

• Soft Switching
• Flip-Chip Package
• Frequency Spread Spectrum (FSS) Option
• Low Interwinding Capacitance

Small Solution Size:

• 400kHz to 5MHz Configurable Switching Frequency (fSW)
• Available in a Tiny QFN-10 (2mmx2.5mm) Package with Wettable Flanks

Applications

EV charger

Block diagram