Maxim automotive application solutions (1): electric vehicles and electric bicycles

January 12, 2023

From battery pack management to motor control, Maxim provides comprehensive products to support electric vehicle applications. The electronic enthusiast network summarized the application program of the electric vehicle series of Meixin for your reference.

1. Electric bicycle

Electric bicycles are bicycles that do not require a driving license. The pedal power system is assembled and driven by a high-efficiency motor. It is a highly reliable and low-cost personal vehicle. Electric bicycles are different from mopeds or scooters with stable power limits.

Some components recommended

battery charger

data

model

Explanation

Key advantage

MAX8900A, MAX8900B, MAX8900C

1.2A switch mode Li + charger with ± 22V input rated voltage and JEITA battery temperature monitoring

A battery charger that complies with the JEITA standard provides the smallest size and least heat solution for space-constrained consumer electronics

MAX8804, MAX8804V, MAX8804W,
...

High voltage, USB / AC adapter dual input charger, 2mm x 3mm TDFN package

The industry's smallest dual-input, Li + battery charger can withstand 30V DC voltage, and the temperature adjustment function ensures safe, high-speed charging

Battery protection

data

model

Explanation

Key advantage

MAX11080, MAX11081

12-channel, high-voltage battery pack fault monitor

Ultra low power overvoltage / undervoltage monitor for monitoring 12 batteries

MAX11068

12-channel, high-voltage sensor, intelligent data acquisition interface

The industry's first Li + battery management IC for hybrid electric vehicles

Current Detection

data

model

Explanation

Key advantage

MAX9918, MAX9919, MAX9920

-20V to + 75V input range, high-precision single / bidirectional current-sense amplifier

The industry's only current-sense amplifier capable of operating below the ground potential (-20V) input common-mode voltage

MAX4210, MAX4211

High-side power and current monitor

MAX4080, MAX4081

76V, high-side, current sense amplifier with voltage output

Current sense amplifier with an accuracy of 0.1% can work up to 76V

DC-DC power supply

data

model

Explanation

Key advantage

MAX15023

4.5V to 28V wide input range, dual output synchronous buck controller

Low-cost, dual-channel DC-DC controller, operating from 4.5V to 28V, suitable for various applications

MAX5080, MAX5081

1A, 40V, MAXPower step-down DC-DC converter

MAX5072

2.2MHz, dual output, buck or boost converter with POR and power failure output

Fuel gauge

data

model

Explanation

Key advantage

DS2786B

Independent fuel gauge based on OCV

2-wire independent fuel gauge, which can provide initial capacity estimation or maintain accuracy during use without learning process; ideal for push-mail function of smart phones

LCD monitor

data

model

Explanation

Key advantage

MAX17075

Boost regulator with integrated charge pump, switch control and high-current operational amplifier

Integrated power supply solution for LCD display, effectively reduce costs and shorten design time

MAX8790

High-efficiency, 6-string white LED (WLED) driver provides effective current balancing for LCD flat panel displays

High-efficiency white LED driver for driving multiple strings of LEDs, which can independently adjust the current of each string of white LEDs

MAX1790, MAX8715