Applications

Automotive On Board Charger

ICs ideal for On Board Chargers

ICs ideal for On Board Chargers

The On Board Charger (OBC) converts AC power supplied from either a household outlet or charging station into DC power, which charges the high-voltage battery, drive for EV and PHEV.
The On Board Charger (OBC) uses low on-resistance Si IGBTs or SiC MOSFETs to reduce conversion loss. The on-resistance has the characteristic to drop as the gate voltage rises so it is recommended to design a gate drive circuit using, for example, an Si IGBT with a high voltage of around 15V or an SiC MOSFET with a high voltage of around 18V.
ABLIC has a lineup of LDOs that can output a high voltage required for the gate driver circuit. In addition, our lineup offers LDOs with built-in watchdog timers for monitoring MCUs, and operational amplifiers ideal for current monitoring of PFC. ABLIC undoubtedly provides ICs ideal for On Board Chargers (OBC).

On board charger block diagram
 

ICs ideal for On Board Chargers

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On board charger block diagram

ICs ideal for On Board Chargers

Product Recommended product Applications and Features
LDO Regulator
(Linear Regulator)
S-19212 For use in gate driver circuits. The output voltage can be set between 2.5 to 16V.
LDO Regulator
(Linear Regulator)
S-19213 For use in gate driver circuits. The output voltage can be adjusted between 1.8 to 30V using an external resistor.
Watchdog Timer S-1951x With reset and LDO regulator functions. Current consumption of 3.0µA.
Operational amplifier S-19630A High-accuracy current detection. 36V operation, Rail-to-Rail input/output, low offset voltage of 50μV.
Operational amplifier S-19611A High-accuracy current detection. 5.5V operation, Rail-to-Rail input/output, low offset voltage of 100μV.

Features

LDO Regulator S-19213 series
High output voltage
Ultra-low current consumption

Automotive, 125°C Operation, 36 V Input, 500 mA Voltage Regulator S-19213 Series

An LDO regulator capable of outputting the high voltage required by a gate driver circuit

This is an LDO regulator with a 36V input, 1.8 to 30V output, 500mA output, an ultra-low current consumption of 5.0μA (typ.) and a high-power dissipation of 5.21W. This makes it ideal for the around 15 to 18V high-voltage gate driver circuits.

 ≫Learning more about the S-19213

Series name


S-19213

Datasheet

 Output current: 500mA

Watchdog Timer S-1951x series
Ultra-low current consumption

Automotive, 125°C Operation, 36 V Input, 500 mA, Built-in Window Watchdog Timer, Voltage Regulator with Reset Function  S-1951x Series

Single chip IC for Supplying MCU Power, Monitoring Voltage and Operation

This is a window watchdog timer IC with a 36V input, 250mA/ 500mA output and comes with reset and LDO regulator functions. Current consumption during operation is a mere 3.0uA, which helps reducing standby current. We are sure you will find a product tailored to your needs in our extensive lineup.

 ≫Learning more about the S-19516/7/9 
≫Learning more about the S-19514/5/8

≫List of Watchdog timer

Series name


S-19516/7

Datasheet

 Output current: 500mA

S-19519

Datasheet

 Output current: 500mA
 LDO: Built-in ON / OFF circuit

S-19514/5

Datasheet

 Output current: 250mA

S-19518

Datasheet

 Output current: 250mA
 LDO: Built-in ON / OFF circuit

High-accuracy Operational Amplifier S-19630A
Low offset voltage
36V operation

Automotive, 125°C Operation, Low Input Offset Voltage CMOS Operational Amplifier S-19630A

Contributing to High-Accuracy Current Sensors

A wide operating voltage range allows use of this IC in systems from 5V to high-voltage systems directly connected to battery. Low offset voltage enables high-accuracy current detection. Input Rail-to-Rail enables low-side and high-side current detection.

≫Learning more about the S-19630A

Series name


S-19630A

Datasheet

 Operating voltage range: 4.0V to 36V
 Low offset voltage: 50μV max.
 Rail-to-Rail input and output

High-accuracy Operational Amplifier S-19611A
Low offset voltage
Low voltage operation

Automotive, 105°C Operation, Low Input Offset Voltage CMOS Operational Amplifier S-19611A

Contributing to High-Accuracy Current Sensors

Low offset voltage enables high-accuracy current detection. Input Rail-to-Rail enables low-side and high-side current detection.

≫Learning more about the S-19611A

Series name


S-19611A

Datasheet

 Operating voltage range: 2.65V to 5.5V
 Low offset voltage: 100μV max.
 Rail-to-Rail input and output