Summary
The TPS54327 is a single, adaptive on-time, D-CAP2™-mode, synchronous buck converter requiring a very low external component count. The D-CAP2™ control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 700 kHz.
The high-side and low-side switching MOSFETs are incorporated inside the TPS54327 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS54327 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54327 dc/dc synchronous converter is designed to provide up to a 3-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 7 V. Rated input voltage and output current range for the evaluation module are given in Table 1.
The TPS54327EVM-686 evaluation module is a single, synchronous buck converter providing 1.05 V at 3 A from 5-V to 18-V input. This user’s guide describes the TPS54327EVM-686 performance.
The high-side and low-side switching MOSFETs are incorporated inside the TPS54327 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS54327 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54327 dc/dc synchronous converter is designed to provide up to a 3-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 7 V. Rated input voltage and output current range for the evaluation module are given in Table 1.
The TPS54327EVM-686 evaluation module is a single, synchronous buck converter providing 1.05 V at 3 A from 5-V to 18-V input. This user’s guide describes the TPS54327EVM-686 performance.
Specifications
| Manufacturer | Texas Instruments |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | 296-28143-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
1.05 V
|
| Current Out |
3 A
|
| Voltage In |
4.5 ~ 18 V
|
| Efficiency @ Conditions |
>86%, 5V in, 1.05V @ 0.3 ~ 1.2 A
>80%, 12V in, 1.05V @ 0.4 ~ 1.7 A >75%, 5V in, 1.05V @ 0.15 ~ 3 A >74%, 12V in, 1.05V @ 0.2 ~ 3 A |
| Voltage Out Range |
0.76 ~ 7 V
|
| Features |
Current Limit (Adj. or Fixed)
Over Current Protection Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
675 kHz
|
| Standby Current [Typical] |
1.8 µA
|
| Quiescent Current [Typical] |
800 µA
|
| Component Count + Extras |
15 + 12
|
| Internal Switch |
Yes
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Computers
DVD/Blu-ray Players LCD TV / Monitor Set-Top Boxes |
| Standby Current [Maximum] |
10 µA
|
| Quiescent Current [Maximum] |
1.2 mA
|
| Main I.C. Base Part |
TPS54327
|
| Date Created By Author | 2010-11 |
| Date Added To Library | 2012-04 |
Eval Board
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