TILM10504 Triple Solid State Drive Power Management Solution

TI’s LM10504 is a three-way buck plus LDO linear power supply single-source power management, three-way buck regulator programmable configuration, efficiency up to 95%, feedback voltage accuracy ± 3%, 2MHz switching frequency, through the SPI interface Programmable output voltage, with overvoltage protection and undervoltage lockout, automatic soft start with power-on restart, mainly used in solid-state drives. This article introduces the main specifications and characteristics of the LM10504, block diagram, typical application block diagram and evaluation board and solid-state drive solution Scheme block diagram.

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 main indicators:

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 main features:

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, 250mA

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 application:

Solid-State Drives

TILM10504 Triple Solid State Drive Power Management Solution
Figure 1. LM10504 PMIC Block Diagram
TILM10504 Triple Solid State Drive Power Management Solution
Figure 2. LM10504 PMIC Buck Functional Block Diagram
TILM10504 Triple Solid State Drive Power Management Solution
Figure 3. Typical Application Block Diagram of LM10504 PMIC
TILM10504 Triple Solid State Drive Power Management Solution
Figure 4. LM10504 PMIC Evaluation Board Outline Drawing

Figure 5. LM10504 Solid State Drive Solution Block Diagram
For details, see:
http://www.ti.com/lit/ds/snvs739/snvs739.pdf

The Links:   NL8048BC19-02 LQ104V1DG83

Author: Yoyokuo