The LMR24220 Multi-Rail reference board implements an extremely compact solution. It is designed to convert from 12V or 24V rails down to typical point-of-load voltages of 3.3V, 1.8V and 1.2V. This design utilizes an LMR24220 Nano Regulator and two LMZ10501 Nano Modules to demonstrate a complete solution for space constrained multi-rail applications.
The LMR24220 Nano Regulator is ideal for intermediate rail conversions and can withstand input voltages up to 42V. It uses a constant on-time (COT) with emulated ripple mode architecture that requires no loop compensation and allows the use of low ESR ceramic capacitors. To further reduce conducted noise on the input supply a pi filter has been implemented on the LMR24220. The LMZ10501 Nano Module is ideal at the point-of-load and uses a current mode architecture combined with an integrated inductor for high efficiency, low noise, and low EMI.
The complete solution size is 20.32 x 13.34 x 2mm with all components placed on a single side. The board can be plugged into a standard 8-pin header with 100 mil spacing and total thickness less than 100mils for ease of prototyping.
Manufacturer | Texas Instruments |
---|---|
Category | AC/DC and DC/DC Conversion |
Sub-Category | DC/DC SMPS - Multi Output |
Eval Board Part Number | 296-LMR24220RB/NOPB-ND |
Eval Board Supplier | Texas Instruments |
Eval Board |
Normally In Stock
|
Topology |
Step Down
|
Outputs and Type |
3 Non-Isolated
|
Voltage Out: Highest Current First |
3.3V, 1.2V, 1.8V
|
Current Out |
2A, 1A, 1A
|
Voltage In |
5 ~ 32 V
|
Efficiency @ Conditions |
>80%, 24V in, 3.3V @ 0.3 ~ 1.8 A
>80%, 12V in, 3.3V @ 0.2 ~ 2 A |
Voltage Out Range |
- Not Given
|
Features |
Current Limit (Adj. or Fixed)
Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
Switching Frequency |
2 MHz
|
Standby Current [Typical] | |
Quiescent Current [Typical] | |
Component Count + Extras |
31 + 4
|
Internal Switch |
Yes
|
Design Author |
Texas Instruments
|
Application / Target Market |
Automotive
Point of Load (PoL) |
Standby Current [Maximum] | |
Quiescent Current [Maximum] | |
Main I.C. Base Part |
LMR24220
LMZ10501 |
Date Created By Author | 2011-10 |
Date Added To Library | 2017-05 |