Micrel KSZ8895 Specifications download pdf (Page 12)

APPLICATION SPOTLIGHT

www.futureelectronics.com

FAX

+65 6808 3886

ftm.asia

futureelectronics.com

Reader Response No.

FAX

+65 6808 3886

ftm.asia

futureelectronics.com

Reader Response No.

emission in one direction can be adjusted in a

typical range of 120° to 55°. The clear silicone

lens of the VLSL50xxA allows for a ± 35° vertical

and ± 60° horizontal angle of half intensity.

The VLSL40xxA and VLSL50xxA are based on

InGaN technology and provide a maximum

current of 700 mA. The LED modules feature

standard solder mask material, and oer

luminous ux and color binning. The devices

provide ESD withstand voltage up to 2 kV in

accordance with JESD22-A114-B and comply

with ROHS 2002/95/EC.

Vishay Intertechnology Releases Metal-Core-Based,ColdWhiteLED

PowerModulesAssembledWith12,24,or36High-BrightnessLEDs

and Featuring Color Temperature Range of 5000 K to 7000 K

Vishay

VLSL40xxA Available With VLSL-REFL01

Reector to Adjust Emissions, while

VLSL50xxA Features Buttery-Shaped

Radiation Characteristic

Vishay announced two metal-core-based, cold

white LED power modules, each assembled

with 12, 24, or 36 high-brightness LEDs. The

new VLSL40xxA is designed for exible use by

utilizing optional special reectors to adjust

the modules’ emission characteristics, while

the VLSL50xxA features a clear silicone lens for

a buttery-shaped radiation characteristic.

Optimized for illumination in streetlights,

internal building lighting, tunnel lights, and

general lighting applications, the VLSL40xxA

and VLSL50xxA oer a color temperature

range of 5000 K to 7000 K. Both devices feature

a shiny white surface and a metal-core, single-

side PCB with a Cu thickness > 0.75 µm. Each

module includes a conductive top layer with

a minimum Cu of 18µm and a 63-µm prepreg

1080 FR4 type isolation layer.

The VLSL40xxA is available with the VLSL-

REFL01 reector, which is composed of an Al-

alloy material with a non-high-polished surface.

By using dierent reector combinations, the

amplier when dimming or soft start functions

are required. Multiple MCP1630 devices can be

attached to a MCU to support multiple power

channels.

The MCP1630 can be used to solve advanced

power supply issues. When multiple MCP1630

devices are used, phase osets can be applied

to each clock input to reduce bus current

ripple. For applications that are sensitive to EMI,

dithering can be applied to the clock signal to

reduce radiated energy at a given frequency.

The MCP1631 is a 20-pin device which, in

addition to the MCP1630 includes an internal

5V or 3.3V regulator, shutdown control,

overvoltage protection, oscillator disable and

1x and 10x gain ampliers

MCP1630 Boost Mode LED Driver

Demonstration Board (MCP1630DM-LED2)

This demo board is a

step-up, switch-mode,

DC-DC converter

used for power LED

applications. The

demo board provides

a 350 mA or 700 mA

constant current

source with a jumper

selection. The input operating voltage range

is 9-16 VDC and the board can supply up to

30W to a string of power LEDs.

MCP1631HV Digitally Controlled

Programmable Current Source Reference

Design (MCP631RD-DCPC1)

This board provides

a SEPIC DC-DC

converter for power

LED and battery

charging applications.

The input voltage

range is 3.5-16 VDC

and the maximum

power output is 8.5W.

MCP1630andMCP1631High-SpeedPWMControllers

The MCP1630 and MCP1631 oer another

method that can be used to generate high

speed PWM signals for high power LED drivers.

The MCP1630 is an 8-pin device that contains

the components needed to generate an

analog PWM control loop, including an error

amplier, comparator and a high current

output pin to drive a power transistor.

The MCP1630 is designed to be used with a

MCU that provides a reference clock source.

The MCU controls the PWM frequency

and maximum duty cycle. The switching

frequency can be up to 1 MHz, depending on

the application requirements. The MCU can

also control the reference input for the error

Microchip

Current Feedback

Thermal Feedback

PIC12HV615

MCU

MCP1630

PWM

Controller

10 LED String

700 mA, 34V DC

User

Interface

9-13V DC

Clock

Reference

MCP9700

Temp Sensor

MCP1630 Boost Mode LED Driver

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Comments to this Manuals

No comments

Micrel KSZ8895 Specifications Page 12

Comments to this Manuals