Overvoltage Protection and Lockout for

12 V, 5 V, 3.3 V

Undervoltage Protection and Lockout for

5 V and 3.3 V

Fault Protection Output With Open-Drain

Output Stage

Open-Drain Power Good Output Signal for

Power Good Input, 3.3 V and 5 V

Power Good Delay; 300-ms TPS3510,

150-ms TPS3511

75-ms Delay for 5-V and 3.3-V Power

Supply Short-Circuit Turnon Protection

2.3-ms PSON Control to FPO Turnoff Delay

38-ms PSON Control Debounce

73-μs Width Noise Deglitches

Wide Supply Voltage Range From 4 V

to 15 V

description

The TPS3510/1 is designed to minimize external components of personal-computer switching power supply

systems. It provides protection circuits, power good indicator, fault protection output (FPO) and PSON control.

Overvoltage protection (OVP) monitors 3.3 V, 5 V, and 12 V (12-V signal detects via VDD pin). Undervoltage

protection (UVP) monitors 3.3 V and 5 V. When an OV or UV condition is detected, the power good output (PGO)

is set to low and FPO is latched high. PSON from low to high resets the protection latch. UVP function is enabled

75 ms after PSON is set low and debounced. Furthermore, there is a 2.3-ms delay (and an additional 38-ms

debounce) at turnoff. There is no delay during turnon.

Power good feature monitors PGI, 3.3 V and 5 V and issues a power good signal when the output is ready.

The TPS3510/1 is characterized for operation from –40°C to 85°C.