TI LM10504三路固态驱动器电源管理解决方案
发布时间：2012-1-27 09:24
发布者：1770309616
|
TI公司的LM10504是三路降压加LDO线性电源的电源管理单源,三路降压稳压器可编程配置,效率高达95%,反馈电压精度±3%,2MHz开关频率,通过SPI接口可编程输出电压,具有过压保护和欠压锁住,带开机重起的自动软起动,主要用在固态驱动器.本文介绍了LM10504主要指标和特性,方框图, 典型应用框图以及评估板与固态驱动器解决方案框图. The LM10504 is an advanced PMU containing three configurable, high-efficiency buck regulators for supplying variable voltages. The device is ideal for supporting ASIC and SOC designs for Solid-State and Flash drives. The LM10504 operates cooperatively with ASIC to optimize the supply voltage for low-power conditions and Power Saving modes via the SPI interface. It also supports a 250 mA LDO and a programmable Interrupt Comparator. LM10504主要指标: Programmable Buck Regulators: Buck 1: 1.1V to 3.6V; 1.6A Buck 2: 1.1V to 3.6V; 1A Buck 3: 0.7V to 1.335V; 1A ±3% feedback voltage accuracy Up to 95% efficient buck regulators 2MHz switching frequency for smaller inductor size 2.8 × 2.8 mm, 0.4 mm pitch 34-bump micro SMD package LM10504主要特性: Three highly efficient programmable buck regulators Integrated FETs with low RDSON Bucks operate with their phases shifted to reduce the input current ripple and capacitor size Programmable Output Voltage via the SPI interface Overvoltage and Undervoltage Lockout Automatic internal soft start with Power-on reset Current overload and thermal shutdown protection PFM mode for low-load, high-efficiency operation Power-down data protection enhances data integrity Bypass mode available on Bucks 1 and 2 Deep sleep mode to save power during idle times DEVSLP function Low-dropout LDO 3.0V, 250 mA SPI-programmable interrupt comparator (2.0V to 4.0V) Alternate Buck VOUTS selectable via VSELECT logic pins Customizable startup sequencing to support varied controller IC requirements RESET pin LM10504应用: Solid-State Drives 
图1. LM10504 PMIC方框图 
图2. LM10504 PMIC降压功能框图 
图3. LM10504 PMIC典型应用框图 
图4. LM10504 PMIC评估板外形图 
图5. LM10504固态驱动器解决方案框图 详情请见: http://www.ti.com/lit/ds/snvs739/snvs739.pdf |
网友评论