XRP7740 Modulated Step-Down DC-DC Controller

產品重點 > XRP7740 Modulated Step-Down DC-DC Controller

            XRP7740 Modulated Step-Down DC-DC Controller
                    XRP7740 from MaxLinear a complete power management system on a single chip
    

Image of Exar Corporation's XRP7740 Modulated (PWM) Step-Down DC-DC Controller MaxLinear's XRP7740 is a quad-output, pulse-width modulated (PWM) step-down DC/DC controller with a built-in LDO for standby power and GPIOs. Fully programmable via the included I²C serial interface, this device provides a complete power management solution in a single IC. Independent digital pulse width modulator (DPWM) channels regulate output voltages and provide required protection functions such as current limiting and overvoltage protection.

Features
Four switching buck (step-down) controllers, each with internal FET drivers. Two controllers (2 and 4) support loads up to 15 A; two controllers (1 and 3) support loads up to 5 A High integration: elimination of external circuits and components required for compensation, parameter adjustment, and interface Programmable DPWM frequency range (300 kHz to 1.5 MHz) enables efficiency and component size optimization Independent digital pulse width modulator (DPWM) channels with five coefficient PID controls Output voltages programmable from 0.9 V to 5.1 V Complete power monitoring and reporting Up to 6 reconfigurable GPIO pins		Overtemperature protection (OTP), undervoltage lockout (UVLO), per-channel overcurrent protection (OCP), and overvoltage protection (OVP) Independently controlled startup delay and ramp for each regulator, including soft start with a pre-biased load voltage Independently controlled soft-stop delay and ramp for each regulator with a programmable stop voltage 6.5 V to 20 V input voltage range – no additional voltage rails required Built-in LDO (configurable to 3.3 V or 5 V) with overcurrent protection Non-volatile memory for system configuration Fully programmable via I²C interface Configuration development tools
Applications
Industrial: ATE, DC/DC converters, video processing Networking and telecommunications equipment		Plasma display panels (PDPs) Consumer: set-top boxes (STB), game systems Computing: servers, storage systems