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For Solid Power Management in your Application: Synchronous DC/DC Buck Converter for 12 to 36 V Industrial Voltage
It is robust, reliable, efficient, inexpensive and universally applicable.
With these characteristics, the SGM61412A from SG MICRO promotes itself as a step-down converter for your developments in the field of power infrastructure.
With the synchronous DC/DC buck converter, you can build 4 advantages into your applications:
| Wide input voltage range | The input voltage range of 4.5 V to 42 V covers the main industrial voltages of 36 V, 24 V, 15 V and 12 V. |
|---|---|
| Adjustable output voltage | The output voltage can be freely parameterized between 0.8 V - 20 V by means of a voltage divider. You remain flexible for new challenges. |
| Layout-friendly | The pinout, the internal compensation circuitry and the synchronous topology ensure an easy and speedy PCB layout in the smallest space. |
| High efficiency | Efficiencies of 80 % to 95 % reduce heat generation and enable longer use of the application with battery or rechargeable battery operation. |
Now more about the technical features:
The buck converter in the TSOT-23-6 package delivers output currents of up to 1200 mA. The external circuitry is limited to the input and output capacitors, a bootstrap capacitor, the feed-back voltage divider and the storage inductor.
The PWM switching frequency of fSW = 1.2 MHz allows the use of small, low-cost partially shielded or shielded inductors in the range of 4.7 µH to 10 µH.
For example, an upstream SGM61412A offers the possibility to feed a 4.3" TFT display, which requires an operating voltage of 3.3 V @ 600 mA, directly from a 24 V industrial voltage with an efficiency of ɳ > 80 %.
Technical data
- Input voltage from 4.5 V to 42 V
- Output current up to 1.2 A
- Output voltage - adjustable from 0.83 V to 20 V
- CCM -> D = VOUT / VIN = 0,12 - 0,88
- Switching frequency fSW = 1,2 MHz
- High efficiency ɳ -> 80 % to 95 %.
- Low quiescent and shutdown current:
- Iq = 55 µA
- ISHTDWN = 1.2 µA
- Precision Enable function (UVLO set.)
- Soft-Start
- Internal compensation
- PSM Power Save Mode @ low ILOAD
- Temperature range from - 40 °C to 125 °C
- Proven TSOT-23-6 package
- Low wiring complexity
- Protection circuits against:
- Short circuit ISHORT
- Current limit ILIM
- Overvoltage (output voltage) VOV
- Overtemperature OT - TSD @ typ. 155 °C, THYS= 30 K
| MODEL | MODI | ORDERCODE | PACKAGE MARKING | PACKINGOPT. |
| SGM61412A | PSM- & PWM-Mode | SGM61412AXTN6G/TR | CN1XX | T&R, 3k |
| SGM61412B | PFM- & PWM-Mode | SGM61412BXTN6G/TR | CN2XX | T&R, 3k |
We provide reference designs for the output voltages VOUT = 3.3 V, 5 V and 12 V in 78XX-RETROFIT design on request.
Take advantage of GLYN's proven technical and commercial support for a fast and smooth design-in.
Data sheet: SGM61412 REV-A2 (1,06 MB)