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SYQ5256 样品申请
概述

The SYQ5256 is a high-efficiency synchronous Buck converter with a constant on-time (COT)control mode. 
Within a wide input supply range of 2.7V to 16V, it can achieve up to 20A of continuous output current and 24A valley inductor current.
The SYQ5256 operates at high efficiency over a wide output current load range.
The SYQ5256 adopts an internal compensation, eliminating the need for external components. 
It supports differential  remote sense, enabling the voltage feedback point to be placed closer to the power supply  demand end of the subsequent stage, 
ensuring a more precise output voltage and fast transient response.
The SYQ5256 supports dynamic adjustment of the output reference voltage through an I2C serial interface, ranging from 0.4V to 0.908V(0.6V~1.108V). 
Its I2C interface enables programming of a 7-bit DAC with a 4mV step resolution.
The voltage slew rate, frequency, valley current limit, SKIP/FCCM mode are also selectable through the I2C interface.
The SYQ5256 incorporates a zero-cross detection(ZCD) mechanism, which enables it to transition to pulse frequency modulation (SKIP-mode) during light-load conditions. This function achieves a low quiescent operating current and high efficiency while maintaining excellent load and linear response characteristics. 
In shutdown mode, the  operating current of SYQ5256 drops below 1uA, significantly reducing system power consumption.
The SYQ5256 is available in a 4mm*3mm FCQFN package with 21-pin.

产品特性

4V to 16V input range without external bias

2.7V to 16V input range with external  bias ranging from 4.8V to 5.5V

20A continuous output current

Output voltage range: 0.4V to 5.5V

Output reference voltage: 0.6V, ±1%

I2C-programmable reference range: 0.6V~1 .108V / 0.4V~0 .908V in 4mV steps

Up to 93% efficiency at VIN=12V,VOUT=1V

Differential remote sense

1.0µA current into VIN pin during shutdown

Programmable soft-start time

Selectable SKIP/FCCM mode, adjustable frequency and valley current limit through I2C

Power good clamped at low level during power failure

Output sinking mode (OSM)

Comprehensive protection:VIN_UVLO,VIN_OVP,VCC_UVLOOCP, UVP, OVP, OTP

产品参考应用图
应用

eSSD module

Servers, Cloud-Computing, Storage

Game Consoles and Graphic Cards

Industrial PC

5G