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500W Onboard Battery Charger for 2-Wheeler EV

Overview

Description

The global electric two-wheeler market is growing rapidly, driven by increasing environmental concerns, rising fuel costs, and government incentives. As adoption accelerates, the demand for reliable and efficient charging solutions becomes critical. Onboard chargers, like this 500W platform from Renesas, eliminate dependence on specialized infrastructure by enabling direct charging from standard AC outlets, offering unparalleled user convenience.

This platform leverages Renesas GaN devices for high efficiency and is optimized for universal input AC/DC battery charger designs with output power levels of up to 500W. Its architecture includes two advanced power stages: Power Factor Correction (PFC) which ensures efficient AC to DC conversion, and LLC Stage which delivers over 95% peak efficiency in DC to DC conversion.

System Benefits:

  • Exceptional efficiency with 650V GaN FETs, reducing power losses for faster charging and enhanced reliability.
  • Integrated MCU enables CAN communication with the end device for reporting critical information, including battery health, load connection/disconnection events, and other essential housekeeping functions.

Comparison

Applications

  • Energy storage
  • LED dimmable drivers
  • Gaming devices
  • EV/HEV onboard charger (OBC) and other chargers

Block Diagram

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WS009: WEB Connector Arrow.477 Connected signals line.260 Connected signals line.157 Connector Line.68 AC Power Source.184 Sheet.2 Alternating Current VIN VIN VIN Connector Arrow 85~265/45-65Hz 85~265/45-65Hz 85~265/45-65Hz HVPAK HVPAK HVPAK Transformer Inductor Iron Core Line.841 Inductor Air Core.212 Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Sheet.41 Line.29 Diode Sheet.44 Sheet.45 Sheet.46 Diode.47 Sheet.48 Sheet.49 Sheet.50 Circle Circle.53 Connector Line Connected signals line Circle.56 Diode.58 Sheet.59 Sheet.60 Sheet.61 Diode.62 Sheet.63 Sheet.64 Sheet.65 Circle.66 Circle.67 Circle.72 Connector Line.73 Connector Line.74 Connected signals line.75 Connected signals line.76 Shunt Sheet.78 Sheet.79 Sheet.80 Rs Rs Rs Connector Line.87 Connected signals line.88 Connector Arrow.89 Circle.90 Circle.91 Connector Arrow.93 PFC PFC PFC Connected signals arrow Diode.96 Sheet.97 Sheet.98 Sheet.99 Connected signals line.100 VCC1 VCC1 VCC1 PGND PGND PGND Capacitor Non-polarized Sheet.104 Sheet.105 Sheet.106 Sheet.107 Connector Line.108 Vd Vd Vd Connected signals line.156 Transformer Inductor Iron Core.182 Line.841 Inductor Air Core.212 Sheet.185 Sheet.186 Sheet.187 Sheet.188 Sheet.189 Sheet.190 Sheet.191 Sheet.192 Sheet.193 Line.29 Capacitor Non-polarized .195 Sheet.196 Sheet.197 Sheet.198 Sheet.199 Transformer Inductor Coreless (Air conductor) Sheet.224 Sheet.225 Sheet.226 Sheet.227 Sheet.228 Sheet.229 Sheet.230 Sheet.231 Sheet.232 Transformer Inductor Coreless (Air conductor).233 Sheet.234 Sheet.235 Sheet.236 Sheet.237 Sheet.238 Sheet.239 Sheet.240 Sheet.241 Sheet.242 Transformer Inductor Coreless (Air conductor).243 Sheet.244 Sheet.245 Sheet.246 Sheet.247 Sheet.248 Sheet.249 Sheet.250 Sheet.251 Sheet.252 Dynamic connector Dynamic connector.254 Circle.255 Circle.256 Circle.257 Connector Line.261 SR Controller SR Controller SR Controller SR Controller SR Controller SR Controller Circle.352 LLC Converter LLC Converter LLC Converter Connector Line.360 Connected signals line.361 Battery 2-Cell Sheet.365 Sheet.366 Sheet.367 Sheet.368 Line 1pt.1552 Line 1pt.1608 Connected signals line.371 Connected signals line.372 Capacitor Non-polarized .375 Sheet.376 Sheet.377 Sheet.378 Sheet.379 Connector Line.380 Connector Line.386 Shunt.387 Sheet.388 Sheet.389 Sheet.390 Rs Rs Rs Connector 1.160 35-60V 35-60V 35-60V Vo Vo Vo Connector Line.395 Optocoupler Optocoupler Optocoupler Optocoupler Optocoupler Optocoupler LLC Control LLC Control LLC Control Input Section Input Section Input Section 2-Wheeler EV 2-Wheeler EV 2-Wheeler EV CAN Transceiver CAN Transceiver CAN Transceiver Current Sense Op Amp Current Sense Op Amp Current Sense Op Amp Vo.415 Vo Vo Resistor - Fixed Resistor - Fixed.417 Connected signals line.418 Circle.419 Connector Line.420 Ground - Earth Sheet.422 Sheet.423 Sheet.424 Sheet.425 Circle.427 Connector Line.428 Connected signals arrow.429 Connector Arrow.435 Connector Arrow.436 Connector Arrow.437 Circle.439 Circle.441 Circle.442 Connector Arrow.443 Circle.444 Circle.445 Connector Arrow.446 Connector Arrow.447 Connector Arrow.448 Connector Arrow.449 Connector Arrow.450 AC Input AC Input AC Input 13V 13V 13V PGND PGND PGND 5V 5V 5V SGND SGND SGND Connector Arrow.457 Connector Arrow.460 Connector Arrow.461 Horizontal Wire Bundle Communication Lines B.795 2 2 2 Horizontal Wire Bundle.467 Communication Lines B.795 2 2 2 Connector Arrow.471 SGND SGND SGND Connector Arrow.473 5V 5V 5V Connector Arrow.475 Connector Arrow.478 CC/CV CC/CV CC/CV Circle.480 Circle.482 Circle.483 Circle.484 13V 13V 13V PGND PGND PGND Connector Arrow.487 Connector Arrow.488 Connector Arrow.489 Connector Arrow.490 G G G G G G Bi-directional Connector Arrow.494 Bi-directional.496 WS009 WS009 WS009 Connected signals line.498 Connector 1.160.499 Resistor - Fixed.500 Resistor - Fixed.501 Circle.502 Ground - Earth.504 Sheet.505 Sheet.506 Sheet.507 Sheet.508 Circle.509 Connector Line.511 Circle.513 Connector Line.515 Connected signals arrow.516 PFC Controller PFC Controller PFC Controller EMI Filter EMI Filter EMI Filter Sheet.517 Sheet.70 Sheet.29 GaN FET GaN FET GaN FET N-Channel Depletion MOSFET Sheet.13 Sheet.14 Sheet.15 Sheet.16 Sheet.17 Sheet.18 Sheet.19 Sheet.20 Sheet.21 Sheet.22 Sheet.23 Sheet.24 Connect.50 Sheet.26 Sheet.27 Sheet.28 Circle.69 Circle.83 Circle.84 Connector Line.82 Connector Line.86 Sheet.518 GaN FET GaN FET GaN FET N-Channel Depletion MOSFET.136 Sheet.137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Sheet.142 Sheet.143 Sheet.144 Sheet.145 Sheet.146 Sheet.147 Sheet.148 Connect.50 Sheet.150 Sheet.151 Sheet.152 Circle.69 Circle.83 Circle.84 Label Text 10pt.397 G G Connector Line.259 Sheet.519 Sheet.159 Sheet.160 GaN FET GaN FET GaN FET N-Channel Depletion MOSFET Sheet.163 Sheet.164 Sheet.165 Sheet.166 Sheet.167 Sheet.168 Sheet.169 Sheet.170 Sheet.171 Sheet.172 Sheet.173 Sheet.174 Connect.50 Sheet.176 Sheet.177 Sheet.178 Circle.69 Circle.83 Circle.84 Label Text 10pt.262.396 G G Connector Line.262 Sheet.520 MOSFET MOSFET MOSFET N-Channel Depletion MOSFET.319 Sheet.320 Sheet.321 Sheet.322 Sheet.323 Sheet.324 Sheet.325 Sheet.326 Sheet.327 Sheet.328 Sheet.329 Sheet.330 Sheet.331 Connect.50 Sheet.333 Sheet.334 Sheet.335 Circle.338 Circle.339 Circle.340 Sheet.521 MOSFET MOSFET MOSFET N-Channel Depletion MOSFET Sheet.266 Sheet.267 Sheet.268 Sheet.269 Sheet.270 Sheet.271 Sheet.272 Sheet.273 Sheet.274 Sheet.275 Sheet.276 Sheet.277 Connect.50 Sheet.279 Sheet.280 Sheet.281 Circle.71 Circle.315 Circle.316 Connector Line.317 Connector Line.313 Connector Line.314 Connector Line.337 Connector Line.341 Current Sense Op Amp Current Sense Op Amp Current Sense Op Amp Voltage Sense Op Amp Voltage Sense Op Amp Voltage Sense Op Amp Temperature Sensor Temperature Sensor Temperature Sensor Flyback Flyback Flyback LDO LDO LDO Sheet.522 MCU MCU MCU ADC ADC ADC CAN CAN CAN I2C I2C I2C ADC ADC ADC IRQ IRQ IRQ GND GND GND Vdd Vdd Vdd ADC ADC ADC GPIO GPIO GPIO
Exiting Interactive Block Diagram