According to statistics, the rough electricity measurement method adopted by more than 80% of the products on the market is serious. In order to provide consumers with a better user experience, cost-effective LCD mobile power with multiple excellent quality came into being. This article describes a low-cost, high-performance LCD mobile power supply design.
Figure 1: LCD mobile power
The CSU8RP3429 uses two high-speed PWM (32MHz) and five high-performance ADCs (12bit, deadband less than 3mV, internal reference voltage accuracy of 1% corrected by the unique reference source digital correction technology) and LCD driver. The IO port has a large current drive function, which can realize a synchronous rectified mobile power source with an efficiency of up to 90% without external peripheral ICs and without adding a drive circuit. Under the 2.1A output condition, the efficiency is still higher than 85%.
First, the system design
The mobile power consists of charge management, discharge management, input detection, and display output (see the figure below).
Figure 2: Mobile power composition
Second, detailed design
2.1 PWM control charging management (no need to charge management chip)
CSU8RP3429 through the PWM controlled Bulk DC-DC circuit, can flexibly control the current and voltage of the three stages of precharging, constant current charging and constant voltage charging to meet the charging requirements of different types of batteries with different capacities.
2.2 PWM control discharge management (synchronous rectification can be realized without peripheral DC-DC chip)
Using the high-speed PWM clock of the CSU8RP3429 and the high-current driving function of the I/O port, the Boost DC-DC can realize synchronous rectification with a discharge efficiency of up to 90%. Under the condition that the discharge current reaches 2.1A, the efficiency can still exceed 85. %.
2.3 Calibrate the internal 2.0V reference source with digital correction technology (eliminate external LDO chip)
The built-in 2.0V reference voltage of the CSU8RP3429 has a corrected error of less than 1%.
The CSU8RP3429 provides a near-hardware level protection mechanism for short-circuit and over-current of the battery. When the external power supply is short-circuited, the chip can close the output path in time. CSU8RP3429 does not require an external voltage divider resistor, which can directly obtain the battery voltage value, effectively preventing the battery from being overcharged and avoiding false detection due to external circuit failure. In addition, the chip detects the feedback mechanism of the loop in multiple links, thus ensuring that the system operates under closed loop and safe conditions.
2.5 Safety of charged devices
Poor USB contact can cause voltage overshoot and damage the device being charged. CSU8RP3429 comes with VDD high voltage detection function, which can control overshoot voltage in time: under 1A condition, overshoot voltage is less than 6.0V, duration is less than 200us, under 2A condition, overshoot voltage is less than 6.3V, duration is less than 200us, strong protection The safety of the device being charged.
Third, the chip comes with LCD driver application
The CSU8RP3429 chip comes with an LCD driver. When the IO port drives the LCD, you can select the LCD enable in the programming option to perform convenient LCD control—output current display, power display percentage, and so on.
Advantages of Led Grow Light for Marijuana
Long lifetime
Recommended useful lifetime of 50, 000 hours for LED lights the equivalent of
burning a light for 18 hours A day, 365 days a year for seven years and seven months.
Energy efficient
Save 70~85% on power than HID lighting, no need extra blowers and Air conditioning systems for cooling.
Better for plant growth
Plants can use nearly all of the light emitted from LED Lights.
Only about 35% of the light generated by metal halide lamps is useful for plant growth.
Low heat output
LED lights produce very little heat.thermalelectric separation technology and modular fans can control the generated heat amount to be a very low extent.
Features
Deep penetration : Good lighting penetration , can penetrate to the deep of the plants
Modular Internal Build: Fully upgradable, easy warranties
Thermal Management: Custom copper core heatsinks quickly dissipates heat for cool operating temperatures
Powerful: 2nd Generation ultra penetration 5W LEDs light deep into the canopy
Versatile: Power cord available in 85~265V and international plugs
Lighter weight: Much lighter than the same products in the marketplace, safer for hanging .
Plants: Suitable for both vegetative phrase and flowering phrase
Item Display
What is Full spectrum led chip ?
It is the newest trend for indoor plants. Advanced Led Grow Lights chip,not provide sigle color ,provide broad spectrum 400nm~840nm,simialr with sun light ,but most is red and blue,it is best for plant grow.This is a revolutionary step for Grow Light which have previously been unable to act as the sole light source for the indoor garden.Suitable for all stages of plant growth.
Advtanges:
Upgraded Epistar chips,High Lumen,High penetration.
Plug with listed certificate safe to use.
The Plug you can choose
Ageing Test
Our Quality Control systems
Package
Application: Greenhouse, Hydroponics, Aeroponics, Home Garden, Farm, Vegetable Shed, Botanic Garden, Flower Exhibitions, Horticulture, Hydroponics, Hemp Cultivations , Medical Plants Cultivations, etc.
Warnings:
1.lndoor use only.
2.To avoid being damaged,do not use water or drip irrigation while using.
3.Sunshine lighting time should be 12-18 hours.
4.While irradiating the plants,the height of led grow lamp is not less than 10 inches,
low height will cause the destruction of plants.
5.Highly hang the lamp will weaken the energy and affect the growth cycle of the
plants, so the lamp should not be hung too high.
6.While taking care of the plants, please spray the leaves and branches 2-3 times everyday,
to ensure the the plants do not wrinkle a wither, and have no phenomenon of few fruit, and
hard pericarp.
Our Company
Trade Terms
Payment: T/T, L/C, Paypal, 30% deposits before production, 70% balance to be paid before deliverying(Western Union are welcome)
Sample will be delivered within 7 working days.
Discounts are offered based on order quanlityes.
MOQ:sample order are acceptable
Delivery ways:DHL,UPS,FedEx,TNT, door to door,by sea,by air,etc.
Professional dedicated to Research, Development, Design, Manufacture of Innovative, Intelligent control and high efficiency Led Grow Lighting for modern agriculture,Marijuana,greenhouse,hydroponics, etc.
Large Capacity Led Grow Light,Led Grow Light For Plant Growing,Led Plant Grow Light,Cob Led Plant Grow Light
Shenzhen Phlizon Technology Co.,Ltd. , https://www.philizon.com