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new products
need to simplify board layout and dynamically scale
power supply performance to meet the requirements of
today’s multi-core processors.”
Key Features and Specifications of ISL91211
Available in two factory configurable options:
ISL91211A: four-phase, three output rails configured as
2+1+1 phase
ISL91211B: four-phase, four output rails configured as
1+1+1+1 phase
5A maximum current per phase up to 20A with four
phases
R5 modulator architecture balances current loads with
smooth phase adding and dropping for power efficiency
optimization
Automatic diode emulation mode for 91% efficiency at
1.1V output voltage
Less than 0.1uA quiescent current (Iq) when EN=0V,
and 17uA when EN=3.7V
Independent dynamic voltage scaling for each output
Input voltage range of 2.5V to 5.5V
±0.7% system accuracy; Output voltage remote sensing
for accurate voltage regulation at the point-of-load
I2C and SPI programmable output from 0.3V to 2V
Soft-start and full protection against undervoltage,
overvoltage, overcurrent, and overtemperature
The ISL91211A triple-output PMIC and ISL91211B
quad-output PMIC can be combined with Intersil
ISL91127 high efficiency buck-boost regulators to
provide application processor and subsystem peripheral
rails for battery-operated products.
Vicor Expands High Voltage Bus Converter
Family with New K=1/16, 384VDC – 24VDC in a
ChiP Package
Summary: The new BCM6123TD1E2663Txx is a high-
density, high-efficiency, fixed ratio DC-DC converter
module in a ChiP package, which operates from a
384VDC nominal input and delivers an isolated and
Safety Extra Low Voltage (SELV) 24V secondary output.
The new BCM 6123 ChiP is offered in a through-hole
form factor measuring 61mm x 23mm x 7.26mm.
Targeting industrial, telecom, and lighting applications,
Vicor’s family of high voltage bus converters give system
designers a simple and cost effective means to create
common bus voltages of 12V, 24V, and 48V directly
from 384VDC.
Based on the patented Sine-Amplitude Converter
topology, high voltage BCM ChiPs are able to reach
peak efficiencies of 98% and achieve power densities
up to 2400W/in³. These flexible modules can be easily
paralleled into high power arrays and outputs can be put
in series to achieve higher VOUT. In addition, the high
voltage BCMs are offered with either analog or digital
signal interface and all have an operating temperature
range of -40˚ to 100˚C.
Since all Vicor BCMs are bi-directional, designers have
the opportunity to incorporate this unique feature in new
designs to enhance system functionality.
Lastly, high voltage BCMs allow designers to reduce
the amount of bulk capacitance needed at the load
by utilizing the Sine-Amplitude Converter’s low AC
impedance relative to the down-stream regulator,
effectively ‘reflecting’ the capacitance across the
module.
With the new K=1/16 model, 500 µF of 24V point-of-load
capacitance can be effectively provided by 2 µF on the
module’s primary side.
New-Tech Magazine Europe l 79