Analog Devices DC2895A LT7101 100V, 1A Low EMI Synchronous Step-Down Regulator
Demonstration circuit for the LT7101 synchronous step-down regulator, delivering 12V/1A from a 12V to 100V input range with low EMI performance.
Overview
The DC2895A is a demonstration board featuring the LT7101, a high-voltage, low EMI synchronous monolithic step-down switching regulator. It is configured to provide a 12V output at up to 1A from an input voltage range of 12V to 100V. Operating at a 400kHz switching frequency, the board includes an integrated EMI filter designed to pass CISPR 25 Class 5 radiated emission tests. The design supports multiple operating modes including Burst Mode for high light-load efficiency, pulse-skipping, and forced continuous mode. The LT7101 integrates power switches and compensation circuitry to minimize external component count, and the board provides terminals for clock synchronization and current monitoring.
Use Cases
- Automotive Power Systems
- Industrial Control Regulators
- Medical Diagnostic Equipment
- Telecommunications Infrastructure
Topics
Referenced Parts
XEL6060-333ME
Coilcraft
IND, 33μH
NRPN042PAEN-RC
Sullins Connector Solutions
HEADER, 4PIN DBL ROW 2mm
GRM32ER72A475KE14
Murata
4.7uF 100V Murata GRM32ER72A475KE14 (X7R 1210).
100V
Murata
4.7uF 100V Murata GRM32ER72A475KE14 (X7R 1210).
16V
Murata
22uF 16V Murata GRM32ER71C226KEA8
100V
Panasonic
33uF 100V Panasonic EEEFK2A330P
200mA
Panasonic
6 1 C14 CAP, 33μF, 100V, 200mA PANASONIC, EEEFK2A330P
| 0805YC105KAT2A | AVX | CAP, X7R, 1μF, 16V, 10%, 0805 |
| JS202011CQN | C&K | SWITCHE, SUB MINIATURE SLIDE SWITCHE |
| 2501-2-00-80-00-00-07-0 | Mill-Max | TESTPOINT, TURRET 0.095" |
| BLM31PG121SN1L | Murata | FERRITE BEAD, 120Ω AT 100MHz, 1206 |
| GRM188R71E104KA01D | Murata | CAP, X7R, 0.1μF, 25V, 10%, 0603 |
| GRM21BR72A104KAC4L | Murata | CAP, X7R, 0.1μF, 100V, 10%, 0805 |
| NRC06F1782TRF | NIC Components | RES, 17.8k, 1%, 0603 |
| EEEFK2A330P | Panasonic | CAP, 33μF, 100V, 200mA |
| 2SN-BK-G | Samtec | SHUNT |
| C3225X7S2A475M200AB | TDK | CAP, CER 4.7μF 100V X7S 1210 |
| HMK212B7224KG-T | Taiyo Yuden | CAP, X7R, 0.22μF, 100V, 10%, 0805 |
| CRCW06030000Z0EA | Vishay | RES, 0Ω, JUMPER 0603 |
| CRCW0603100KFKEA | Vishay | RES, 100k, 1%, 0603 |
| CRCW06031K00FKEA | Vishay | RES, 1k, 1%, 0603 |
| CRCW06039K31FKEA | Vishay | RES, 9.31k, 1%, 0603 |
| CRCW080510M0FKEA | Vishay | RES, 10M, 1%, 0805 |
| CRCW12060000Z0EA | Vishay | RES, 0Ω, SHUNT, 1206 |
| CC0603KRX7R9BB105 | Yageo | CAP, X7R, 1μF, 50V, 10%, 0603 |
| 8833 | Keystone Electronics | STAND-OFF, NYLON 0.5" TALL |
| BLM31PG121SN1 | Murata | FB1,FB2 Ferrite Bead Murata BLM31PG121SN1 |
| EEEFK2A330P | Panasonic | 33uF 100V Panasonic EEEFK2A330P |
| HMK212B7224KGHT | Taiyo Yuden | 0.22uF 100V 0805 TAIYO YUDEN HMK212B7224KGHT |
| LT7101EUHE#PBF | Analog Devices | LT7101EUHE, QFN 5MM X 6MM |
| GRM32ER71C226KEA8 | Murata | CAP, X7R, 22μF, 16V, 20%, 1210 |
| GRM32ER71C226KEA8 | Murata | 22uF 16V Murata GRM32ER71C226KEA8 |
| XEL6060-333ME | Coilcraft | IND, 33μH |
| NRPN042PAEN-RC | Sullins Connector Solutions | HEADER, 4PIN DBL ROW 2mm |
| GRM32ER72A475KE14 | Murata | 4.7uF 100V Murata GRM32ER72A475KE14 (X7R 1210). |
| 100V | Murata | 4.7uF 100V Murata GRM32ER72A475KE14 (X7R 1210). |
| 16V | Murata | 22uF 16V Murata GRM32ER71C226KEA8 |
| 100V | Panasonic | 33uF 100V Panasonic EEEFK2A330P |
| 200mA | Panasonic | 6 1 C14 CAP, 33μF, 100V, 200mA PANASONIC, EEEFK2A330P |