Preface
With the reduction of LED production costs, its application range is becoming more and more extensive, including flashlights, automobiles and other lighting scenarios. Greater reliability, higher efficiency, and excellent responsiveness make LEDs an excellent light source. At the same time, compared with common lighting lamps such as fluorescent lamps and incandescent lamps, LEDs have a longer lifespan and can greatly reduce daily maintenance costs. In addition, LEDs are smaller in size and higher in brightness, which can be easily used in mobile power banks, outdoor power supplies, and backlights of mobile phones and displays.
Recently, when sorting out the recent dismantling cases, the charging head network found that outdoor power supplies from Anker, Greenlink, Empire and other manufacturers support lighting functions through built-in LED driver chips.
The LED driver chip that appears in the article
Some of the specifications of the LED driver chips that appear in the article are shown in the figure, and more parameters and application cases will be introduced to you in detail below.
CR Siwei PT4115
CR Siwei PT4115 is a high-brightness LED driver IC, with a simplified peripheral, the chip has a wide input voltage range of 6~30V, the highest output current is 1.2A, and the switching step-down mode is driven, providing more than 30W output power, capable of driving single or multiple series LEDs, and is available in SOT89-5 and ESOP-8 packages.
Application examples
安克PowerHouse II 400户外电源
The Anker PowerHouse II 400 power station is a rectangular chassis with a handle on the top for easy carrying. The product comes standard with lights, car charging sockets, USB ports and AC sockets, etc., and the built-in display can not only display the remaining power, but also the input/output power and the corresponding full/use time at a glance. The USB-C port supports 60W bidirectional fast charging, which can be charged at the same time as the DC port to shorten the charging time.
Related Reading:
拆解报告:安克PowerHouse II 400户外电源
ZESE哲思500W便携式储能电源ZES10
Philosophy 500W portable energy storage power supply ZES101 has a rounded shape, a handle design on the top is very easy to carry, and the metal body shell makes the product very strong and durable. The built-in display screen can be clear at a glance on the remaining power, input/output power and other power consumption, in addition to the lighting and USB-C, USB-A and the new national standard five-hole socket, etc., the C port supports PD two-way fast charging, with 5V/3A, 9V/3A, 15V/3A, 20V/3A four sets of fixed voltage levels, the maximum power up to 60W. Whether it's camping outdoors or an unexpected power outage indoors, it can come in handy.
Related Reading:
Teardown report: ZE philosophical 500W portable energy storage power supply ZES10
Kawanda 600W outdoor power supply
Kawanda's outdoor power supply adopts a flame-retardant shell made of PC material, and the overall black and red color scheme is particularly eye-catching. The product not only has outstanding 600W/626.4Wh high power and large capacity, but also has a variety of interfaces, which can meet the power needs of a family outing. In addition, it also supports lighting, 60W PD fast charging, etc., which is a very practical outdoor power supply.
Related Reading:
The automotive starter power supply giant Kaerku entered the outdoor power supply market, and Kawangda's 600W product was disassembled
Jingfeng Mingyuan BP1371
Jingfeng Mingyuan BP1371 is a step-down and constant current driver IC that drives high-brightness LEDs, with a compact periphery and a SOT89-5 package. The input voltage range of this chip is 5~40V, and the output current is set by the sampling resistor, and the maximum output current can reach 1.2A. The BP1371 has a built-in power switch, which can drive multiple 1 or 3 watt LEDs depending on the input voltage. In addition, over-temperature protection, LED short-circuit, and open-circuit protection are included in the chip.
Application examples
Greenlink 2200W Xingchen mobile energy storage power supply GS2200
Greenlink Xingchen GS2200 outdoor power station has a built-in 2048Wh lithium iron phosphate battery, which supports 2200W output power, and supports U-Turbo super energy mode, which supports 3500W output power. The outdoor power supply is equipped with carrying handles on both sides, AC output sockets and input sockets on the side, a fan inside for heat dissipation, an LCD screen on the front of the fuselage for status display, and USB-C and USB-A ports.
Related Reading:
Teardown report: Greenlink 2200W Xingchen mobile energy storage power supply GS2200
Greenlink 600W portable power station GS600
This outdoor power station launched by Greenlink has a built-in 680Wh lithium iron phosphate battery, the inverter adopts pure sine wave output, with 600W output power, and the output power is 1500W under the blessing of super mode, and supports UPS function, and the switch to the outdoor power supply is completed within 10ms. It also has USB-C and USB-A fast charging interfaces, and the USB-C interface supports 100W fast charging output.
Related Reading:
Teardown report: Greenlink 600W portable power station GS600
Weimob ME2215
Weimob ME2215 is an LED driver IC in SOT89-5 package. The chip has an input voltage range of 6-36V and can achieve a maximum current of 1A with an external adjustable resistor. With the right power supply and peripherals, the ME2215 can reach a maximum output power of 30W. The ME2215 has a built-in switch and high-side current detection circuitry that can be used to set the average output current using an external resistor. By controlling the VSET pins, the output current can be adjusted below the set value. The VSET pins can be controlled using either DC or PWM signals. It is possible to increase the soft-start time by connecting an external capacitor to ground on the VSET pin. When the VSET voltage drops below 0.2V, the switch is turned off and the device enters a low-power standby state.
Application examples
EMPIRE 200W Multi-function Portable Power Station
The EN2 is made of an aluminium alloy shell, with two end faces for AC inverter output and PD fast charging panel, and a leather handle on the side of the PD fast charging panel with higher usage rate, for easy use. The AC inverter supports 200W output power, which can meet the power supply needs of small household appliances. PD supports 65W bidirectional fast charging, and USB-A port supports 18W fast charging to meet the power supply needs of mobile phones and notebooks.
Related Reading:
Teardown Report: Empire 200W Multi-function Portable Energy Storage Power Supply
Summary of the charging head network
It can be seen from the products of Anker, Greenlink, Empire and other manufacturers that the chips of the original chips of China Resources Silicon, Jingfeng Mingyuan and Weimob mentioned in the article all have the characteristics of wide input voltage, easy development, simple application, and simplified periphery, and can drive a variety of high-power LED lights to meet the user's high-brightness lighting needs.
In addition, the core advantage of LED compared with other traditional lighting is high efficiency and low cost, I believe that in the future, with the continuous iteration and upgrading of LED-related technologies, we can expect it to reach a new height in lighting effects, and can continue to play an important role in various fields such as display, lighting, etc., to promote the continuous development of related product markets and improve people's quality of life.