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Toshiba Launches Multi-Function System Power IC for SSD

2016-12-15 | Return

TOKYO–Toshiba Corporation&lqquot&s (TOKYO: 6502) Storage & Electronic Devices Solutions Company today launched "TC7738WBG," a multi-function system power IC suited for the power supply of SSD components, such as the SoC core block, IO blocks, NAND flash memory, DRAM, and various sensors. Sample shipments start today with mass production shipments scheduled for the end of January next year.

The “TC7738WBG” is a multi-output power supply IC that incorporates a 6-channel DC-DC converter, a 2-channel power supply and an input protection switch. In systems that use SSD, the voltage differs depending on the interface or application. The new IC allows the input voltage mode setting and output voltage of each channel to be changed simply by changing pin settings, enabling use in numerous systems.

In a typical system, the power supply input line is generally protected by a dedicated IC. Toshiba’s new power IC incorporates this same function as an input protection switch with low-input voltage, over-voltage detection, and a soft start function to prevent inrush current.

The new IC has a function to control the DC-DC converter by automatic switching of Pulse Width Modulation (PWM) or Pulse Frequency Modulation (PFM) operations according to the output load, and realizes highly efficient characteristic in both heavy and light load systems. This allows the IC to support various applications, including portable devices.
Applications

SSD, portable devices, etc.

Main Features of the New Product

。Built-in input protection switch

。Supports both 3.3V and 5V systems by changing pin settings

。Buck DC-DC converters (6ch) + LDO (2ch) + load switch (1ch)

。Efficiency control during light load conditions (by switching PWM/PFM operation)

。Compact package (WCSP45; 3.31mm x 2.91mm)

Main Specifications

Part number

TC7738WBG

Control I/F

I2C

Input voltage

3.3V input setting: 2.9 to 3.6V; 5V input setting: 4 to 5.5V

Package

WCSP45 (Size: 3.31 mm x 2.91 mm; Pin pitch: 0.4mm)

DC-DC

	Setting 1		Setting 2		Output current (Max)
	3.3V mode	5V mode	3.3V mode	5V mode
ch1	By-pass mode or 2.5V	2.5V	By-pass mode or 2.5V	2.5V	4A
ch2	1.35V		1.2V		1A
ch3	1.8V		1.8V		2A
ch4	1.0V		1.8V		1A
ch5	1.0V		0.9V		1A
ch6	1.0V		0.9V		3.5A

Series power supply

Setting	Setting 1		Setting 2		Output current (Max)
	3.3V mode	5V mode	3.3V mode	5V mode
LDO1	2.5V		1.8V		0.3A
LDO2	Bypass mode	2.5V	Bypass mode	3.3V	0.3A

Input protection switch

ON resistance: 20 mΩ (Typ.)
Input over-voltage detection, input over-current detection, soft start function

Abnormality detections

Output over-voltage detection, output undervoltage detection, output over-current detection, over-temperature detection

Mass production

End of January 2017 (scheduled)

Source：http://www.semicon.toshiba.co.jp/eng/