Everything You Need to Know About Power Supply Protections
Comparison Between Monitoring Integrated Circuits
Contents
In the table below we compare the main protections supported by the most popular monitoring integrated circuits. We are separating the circuits in two kinds, first the ones with integrated PWM controller (used by low-cost power supplies based on the half-bridge topology) and then the circuits used on power supplies with more modern topologies.
Unless noted, OVP and UVP circuits monitors the main positive voltages (+12 V, +5 V and +3.3 V) only.
| Circuit | PG | OVP | UVP | OCP | OTP | OPP |
| ATX2005 | Y | Y | Y | N | N | N |
| AZ7500 | N | N | N | N | N | N |
| CG8010 | Y | Y | Y | N | N | N |
| EST7502 | Y | Y | Y | N | N | N |
| SD6109 | Y | Y | Y | N | N | Y |
| SG6105 | Y | Y | Y* | N | N | Y |
| TL494 | N | N | N | N | N | N |
| WT7520 | Y | Y | Y | N | N | N |
Obs: ATX2005 is also known by other names like 2005AZ, SDC2005, etc.
| Circuit | PG | OVP | UVP | OCP | OTP |
| GR8323 | Y | Y | Y | 4 Ch. | Y |
| HY510N | Y | Y | Y** | N | N |
| PS113 | Y | Y | N | N | N |
| PS222 | Y | Y | Y | 3 Ch. | N |
| PS223 | Y | Y | Y | 4 Ch. | Y |
| PS224 | Y | Y | Y | 4 Ch. | N |
| PS229 | ? | ? | ? | ? | ? |
| PS231 | Y | Y | Y | 5 Ch. | N |
| PS232 | Y | Y | Y | 6 Ch. | N |
| PS236 | Y | Y | Y | 3 Ch. | N |
| PS238 | Y | Y | Y | 8 Ch. | N |
| S3515 | Y | Y | Y | 4 Ch. | N |
| SG6516 | Y | Y | Y | 4 Ch. | N |
| ST9S429 | Y | Y | Y | 4 Ch. | N |
| WT7502 | Y | Y | Y | N | N |
| WT7505 | Y | Y | Y | 3 Ch. | N |
| WT7510 | Y | Y | Y | N | N |
| WT751002 | Y | Y | Y** | N | N |
| WT7517 | Y | Y | Y | 5 Ch. | N |
| WT7518 | N | N | N | 4 Ch. | N |
| WT7525 | Y | Y | Y | 4 Ch. | N |
| WT7527 | Y | Y | Y | 4 Ch. | N |
| WT7579 | Y | Y | Y | 6 Ch. | Y |
* Also monitors -12 V and -5 V outputs.
** Doesn’t monitor +12 V for this protection.