The TPS40422 is a dual-output PMBus protocol, synchronous buck controller. It can be configured also for a single, two-phase output.
The wide input range supports 5-V and 12-V intermediate buses. The accurate reference voltage satisfies the need of precision voltage to the modern ASICs and potentially reduces the output capacitance. Voltage mode control reduces noise sensitivity and also ensures low duty ratio conversion.
Using the PMBus protocol, the device margining function, reference voltage, fault limit, UVLO threshold, soft-start time, turn-on delay, and turn-off delay can be programmed.
In addition, an accurate measurement system is implemented to monitor the output voltages, currents and temperatures for each channel.
Part number | Order | Vin (Min) (V) | Vin (Max) (V) | Vout (Min) (V) | Vout (Max) (V) | Iout (Max) (A) | Regulated outputs (#) | Number of Phases | Switching frequency (Min) (kHz) | Switching frequency (Max) (kHz) | Iq (Typ) (mA) | Features | Duty cycle (Max) (%) | Operating temperature range (C) | Rating | Package Group | Type | Control mode |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TPS40422 |
|
4.5 | 20 | 0.6 | 5.6 | 60 | 2 | 2 | 200 | 1000 | 18 |
Dynamic Voltage Scaling
Enable Frequency Synchronization Multiple Outputs PMBus Phase Interleaving Remote Sense |
90 | -40 to 125 | Catalog |
VQFN | 40
WQFN | 40 |
Controller | Voltage Mode |
TPS40322 |
|
3 | 20 | 0.6 | 5.6 | 60 | 2 | 2 | 100 | 1000 | 6 |
Enable
Frequency Synchronization Multiple Outputs Phase Interleaving Power Good Remote Sense |
95 | -40 to 125 | Catalog | VQFN | 32 | Controller | Voltage Mode |
TPS40400 |
|
3 | 20 | 0.6 | 5 | 30 | 1 | 1 | 200 | 2000 | 6 |
Dynamic Voltage Scaling
Enable Frequency Synchronization PMBus Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification Tracking |
90 | -40 to 125 | Catalog | VQFN | 24 | Controller | Voltage Mode |
TPS40425 |
|
4.5 | 20 | 0.6 | 5 | 40 | 2 | 2 | 200 | 1500 | 18 |
Adjustable Current Limit
Dynamic Voltage Scaling Enable Frequency Synchronization Phase Interleaving Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification UVLO Adjustable Voltage Margining |
46 | -40 to 125 | Catalog | VQFN | 40 | Controller | Voltage Mode |
TPS40428 |
|
4.5 | 20 | 0.6 | 5 | 40 | 2 | 2 | 200 | 1500 | 18 |