The TPS54332 dc/dc converter is designed to provide up to a 3.5 A output from an input voltage source of 3.5 V to 28 V. Rated input voltage and output current range for the evaluation module are given in Table 1. This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54332 regulator.
The switching frequency is internally set at a nominal 1000 kHz. The high-side MOSFET is incorporated inside the TPS54332 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFET allows the TPS54332 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The compensation components are external to the integrated circuit (IC), and an external divider allows for an adjustable output voltage. Additionally, the TPS54332 provides adjustable slow start and undervoltage lockout inputs. The absolute maximum input voltage is 30 V for the TPS54332EVM-416.
At light load currents, the TPS54332 is designed to operate in pulse skipping Eco-mode™. When the peak inductor current is lower than 100 mA typical, the device enters Eco-mode™.
| Manufacturer | Texas Instruments |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | 296-24330-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
2.5 V
|
| Current Out |
3.5 A
|
| Voltage In |
5 ~ 15 V
|
| Efficiency @ Conditions |
>85%, 5V in, 2.5V @ 0.25 ~ 2.4 A
>80%, 12V in, 2.5V @ 0.4 ~ 3.3 A >77%, 15V in, 2.5V @ 0.5 ~ 3.5 A |
| Voltage Out Range |
0.8 ~ 5 V
|
| Features |
Current Limit (Adj. or Fixed)
Light Load Mode Over Voltage Protection Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
1 MHz
|
| Standby Current [Typical] |
1 µA
|
| Quiescent Current [Typical] |
82 µA
|
| Component Count + Extras |
16 + 10
|
| Internal Switch |
Yes
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Battery Chargers
LCD TV / Monitor Set-Top Boxes |
| Standby Current [Maximum] |
4 µA
|
| Quiescent Current [Maximum] |
120 µA
|
| Main I.C. Base Part |
TPS54332
|
| Date Created By Author | 2009-02 |
| Date Added To Library | 2012-04 |