DESCRIPTION

The MP8796B is a fully integrated, PMBuscompatible, high-frequency, synchronous buck converter. The MP8796B offers a very compact solution that achieves up to 30A of output current per phase with excellent load and line regulation over a wide input supply range. The MP8796B operates at high efficiency over a wide output current load range.

The PMBus interface provides converter configurations and key parameter monitoring.

The MP8796B adopts MPS’s proprietary, multiphase constant-on-time (MCOT) control, which provides fast transient response and eases loop stabilization. The MCOT control scheme also allows multiple MP8796B 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 MP8796B requires a minimal number of readily available, standard external components, and is available in a TQFN-25 (4mmx5mm) package.

FEATURES

 PMBus 1.3 Compliant

 Scalable Multi-Phase Operation

 3.1V to 16V with External 3.3V VCC Bias, 4V to 16V with Internal Bias or External 3.3V VCC Bias

 30A Continuous Output Current per Phase

 Low RDS(ON) Integrated Power MOSFETs

 Lossless, Accurate On-Die Current Sensing

 Adaptive COT for Ultra-Fast Transient Response

 Stable with Zero-ESR Output Capacitors

 0.5% Reference Voltage Over 0°C to +70°C Junction Temperature Range

 Output Voltage True Remote Sense

 Output Adjustable from 0.4V to 0.9 x VIN Up to 5.5V Max

 Output Voltage/Current, Input Voltage, and Junction Temperature Reporting

 Built-In MTP to Store Custom Configurations

 Configurable via PMBus

o Output Voltage

o Output Current Limit

o Selection of Pulse Skip or Forced CCM Operation

o Soft-Start Time

o Selection of Switching Frequency from 400kHz, 600kHz, 800kHz, or 1000kHz

o Selection of Hiccup or Latch-Off Mode for OCP, OVP, and OTP

o Ramp Compensation

 Available in a TQFN-25 (4mmx5mm) Package

APPLICATIONS

 Telecom and Networking Systems

 Base Stations

 Servers