Creating your own offline ups circuit
diagram is a good idea to secure your backup files is a really a wise idea. With
the increasing daily support on networked data systems, the need for goofproof
backup of power supply systems is now crucial.
UPS applications require a high-speed
control MCU with multiple on-chip inverter and converter PWM control functions
thus making the RL78/I1A an ideal choice for continuous commercial power
supplies. Renesas delivers optimal solutions for UPS applications by providing
a variety of semiconductor devices in addition to MCUs.
Recommended Products
| Block | Semiconductor device | Recommended products | Features, etc. |
|---|
| Controller | MCU | RL78/I1A | Optimal for standby(offline) power systems. Timers, 5V operation, small package. |
| R8C Family | Optimal for standby(offline) power systems. Timers, 5V operation, small package. |
| EEPROM | R1EX24xxx Series
| I2C bus interface. Optimal for power failure recording *1 |
| R1EX25xxx Series | SPI bus interface. Optimal for power failure recording *2 |
| Step-down circuit | MOSFET | RJK60xxDPK | Low on-resistance, high-speed switching |
| Step-up circuit | MOSFET | RJK1003DPN | Low on-resistance, high-speed switching |
| Inverter | MOSFET | RJK40/50/60xxDPK | Low on-resistance, high-speed switching |
| IGBT | RJH60DxDPP/DPK, RSH60FxDPK | low VCE(sat), FRD on-chip |
PFC
power supply | IGBT | RJH60DxDPP/DPK | low VCE(sat), FRD on-chip |
| PFC IC | R2A20115, R2A20112, R2A20117, R2A20118A, R2A20104 | |
| Power supply, etc. | Photocoupler
(standard) | PS23xx Series
PS27xx Series
PS28xx Series | High isolation voltage (5kVr.m.s.), 4p-LSOP, Ta=115°C
High isolation voltage (3.75kVr.m.s.), 4p-SOP, Ta=110°C
High isolation voltage (2.5kVr.m.s.), 4p-SSOP, Ta=110°C |
Photocoupler
(IGBT drive) | PS93xx Series
(6/8p-SDIP)
PS94xx Series
(16p-SOP)
PS95xx Series
(8p-DIP)
PS99xx Series
(8p-LSDIP) | High isolation voltage (5kV～7.5kVr.m.s.)
0.6～2.5A output
High CMR (CMR≧50kV/μs) |
| Op-amp | HA1630xxx series, μPC358 |
|
| MCU peripheral | Reset IC | RNA519xx Series | Variable detection voltage |
*1 I
2C : Inter-Integrated Circuit
*2 SPI : Serial Peripheral Interface
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