The LM5006EVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 6V to 75V. The circuit delivers load currents to 500 mA, with current limit set at a nominal 1 Amp.
This high voltage regulator contains an 80V NChannel MOSFET Switch and a startup regulator. The device is easy to implement and is provided in an MSOP-10 package.
The regulator’s control scheme uses an on-time inversely proportional to VIN. This feature results in the operating frequency remaining relatively constant with line and load variations. The control scheme requires no loop compensation, resulting in fast transient response. An intelligent current limit is implemented with a forced off-time which is inversely proportional to VOUT.
This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, VCC Under Voltage Lock-out, Max Duty Cycle Limiter, a Pre-charge Switch, a programmable Under Voltage Detector with a status flag output, and a gate driver output for a synchronous rectifier.
| Manufacturer | Texas Instruments |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | LM5006EVAL/NOPB-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
5 V
|
| Current Out |
500 mA
|
| Voltage In |
6 ~ 75 V
|
| Efficiency @ Conditions |
>92%, 6V in, 5V @ 50 ~ 500 mA
>92%, 12V in, 5V @ 75 ~ 500 mA >88%, 24V in, 5V @ 200 ~ 500 mA >80%, 6 ~ 75V in, 5V @ 500 mA |
| Voltage Out Range |
- Not Given
|
| Features |
Shutdown, Enable, Standby
Status Indication Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
200 kHz
|
| Standby Current [Typical] |
20 µA
|
| Quiescent Current [Typical] |
1 mA
|
| Component Count + Extras |
20 + 5
|
| Internal Switch |
Yes
|
| Design Author |
Texas Instruments
|
| Application / Target Market |
Automotive
Telecom |
| Standby Current [Maximum] |
70 µA
|
| Quiescent Current [Maximum] |
1.3 mA
|
| Main I.C. Base Part |
LM5006
|
| Date Created By Author | |
| Date Added To Library | 2012-03 |
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