MPQ8655

MPQ8655

16V, 30A, Scalable, Digital, Synchronous Step-Down Converter with Digital Interface

Datasheet

Description

The MPQ8655 is a fully integrated, digital interface-compliant, high-frequency, synchronous buck converter. The MPQ8655 offers a very compact solution that achieves up to 30A of output current (I_OUT) per phase, with excellent load and line regulation across a wide input supply range. The MPQ8655 operates at high efficiency across a wide I_OUT load range. The digital interface provides converter configurations and monitors key parameters.

The MPQ8655 adopts MPS’s proprietary multi-phase constant-on-time (MCOT) control, which provides fast transient response and eases loop stabilization. The MCOT scheme also allows multiple MPQ8655 devices to be connected in parallel, with excellent current sharing and phase interleaving for high-current applications.

Fully integrated protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8655 requires a minimal number of readily available, standard external components, and is available in a TQFN-25 (4mmx5mm) package.

Features & Benefits

Digital Interface 1.3 Compliant
Scalable Multi-Phase Operation
3.1V to 16V Input Voltage (V_IN) with External 3.3V V_CC Bias
4V to 16V V_IN with Internal Bias
Up to 30A of Continuous Output Current (I_OUT) per Phase
Low On Resistance (R_DS(ON)) Integrated Power MOSFETs
Lossless and Accurate On-Die Current Sensing
Adaptive Multi-Phase Constant-On-Time (MCOT) 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, I_OUT, V_IN, and T_J Reporting
V_OUT Adjustable from 0.4V to 0.9 x V_IN, Up to 5.5V Max
Built-In Memory to Store Custom Configurations
Configurable via Digital Interface:
- V_OUT
- I_OUT Limit
- Selectable Pulse-Skip Mode (PSM) or Forced Continuous Conduction Mode (FCCM)
- Soft-Start Time (t_SS)
- Selectable 400kHz, 600kHz, 800kHz, or 1000kHz Switching Frequency (f_SW)
- Over-Current Protection (OCP), Over-Voltage Protection (OVP), and Over-Temperature Protection (OTP) with Options for Hiccup or Latch-Off Mode
- Ramp Compensation
Available in a TQFN-25 (4mmx5mm) Package