Table of Contents
ICs ideal for On Board Chargers
Overview
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).
ICs ideal for On Board Chargers
Block Circuit
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*VD: Voltage detector (Reset IC) *LDO: Low-dropout regulator *WDT: Watchdog timer
ICs ideal for On Board Chargers
ICs ideal for automotive Auxiliary Motors in 48V MHEV
| 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. |
| Flyback Controller (Switching regulator) | S-19990 | Low voltage operation (from 3.0V). 60μA quiescent current. The industry's smallest package. |
| 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
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.
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Flyback Controller S-19990 Series
Low voltage operation
Low noise
Low current consumption
Ideal for emergency backup battery
The S-19990 Series is the industry's lowest operation voltage of 3.0V for a 36V operation step-up switching regulator controller. It can also boost voltage even with low-voltage capacitors/batteries, making the emergency backup battery more compact and reducing costs.
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Watchdog Timer S-1951x series
Ultra-low current consumption
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.
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High-accuracy Operational Amplifier S-19630A
Low offset voltage
36V operation
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.
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Series name
Operating voltage range: 4.0 V to 36 V
Low offset voltage: 50μV max.
Rail-to-Rail input and output
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High-accuracy Operational Amplifier S-19611A
Low offset voltage
Low voltage operation
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.
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Series name
Operating voltage range: 2.65V to 5.5V
Low offset voltage: 100μV max.
Rail-to-Rail input and output
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