MPQ8791

MPQ8791

16V, 10A, Digital, Synchronous Step-Down Converter with PMBus

Description

The MPQ8791 is a fully integrated, PMBus-compatible, high-frequency, synchronous buck converter. It offers a very compact solution that achieves up to 10A of output current (I_OUT), with excellent load and line regulation across a wide input supply voltage (V_IN) range. The device operates at high efficiency across a wide I_OUT load range.

The PMBus interface provides converter configurations and key parameter monitoring.

The MPQ8791 adopts MPS’s proprietary digital constant-on-time (COT) control, which provides fast transient response and eases loop stabilization. Fully integrated protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8791 requires a minimal number of readily available, standard external components, and is available in a TLGA-40 (5mmx7mm) package.

Features & Benefits

PMBus 1.3 Compliant
Supports a 4.3V to 16V Input Voltage (V_IN)
10A Continuous Output Current (I_OUT)
Quiet Switcher^TM Technology (QST^TM) to Limit Peak Switching Voltage
Low On Resistance (R_DS(ON)) Integrated Power MOSFETs
Lossless and Accurate On-Die Current Sensing (CS)
Adaptive Constant-On-Time (COT) for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitors
0.5% Reference Voltage (V_REF) across 0°C to 70°C Junction Temperature (T_J) Range
Output Voltage (V_OUT) True Remote Sense
V_OUT Adjustable from 0.35V to 0.9 x V_IN Up to 5.5V Max
V_OUT, I_OUT, V_IN, and T_J Reporting
Built-In Non-Volatile Memory (NVM) to Store Custom Configurations
Configurable via PMBus:
- V_OUT
- I_OUT Limit
- Soft-Start Time (t_SS)
- Selectable 300kHz to 2MHz Switching Frequency (f_SW)
- Hiccup or Latch-Off Mode for Over-Current Protection (OCP), Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), and Over-Temperature Protection (OTP)
- Ramp Compensation
Total Solution Available in a TLGA-40 (5mmx7mm) Package