Infineon ILD8150/E 80V High-Side Buck LED Driver Design Guide
Design guide for the Infineon ILD8150 80V high-side buck LED driver featuring hybrid dimming, 1.5A output current, and 97% efficiency for general lighting applications.
Overview
This document details the operation and design of the Infineon ILD8150/E hysteretic high-side buck LED driver IC. Operating from 8V to 80V, the device supports output currents up to 1.5A and switching frequencies up to 2MHz. Key features include hybrid dimming (analog and PWM), ±3% current accuracy, and integrated protections like over-temperature and cycle-by-cycle current limiting. The guide provides component selection calculations for sense resistors, inductors, and capacitors, as well as PCB layout recommendations and performance measurement results for a reference design. It also includes an application example utilizing the XDPL8219 flyback converter as a primary stage.
Use Cases
- General LED lighting
- Tunable white lighting
- Horticultural lighting
- Secondary stage DC-DC LED drivers
Topics
Referenced Parts
GCM1885C1H100JA16#
Murata
Murata GCM1885C1H100JA16#
CRCW12061R33FK
Vishay
resistor Vishay CRCW12061R33FK
CRCW12062R05FK
Vishay
resistor Vishay CRCW12062R05FK
CRCW12063R60FK
Vishay
resistor Vishay CRCW12063R60FK
CRCW12064R30FK
Vishay
resistor Vishay CRCW12064R30FK
V/0.1/X7R
AVX
6 C6 22 n Cap-0805-22n/100 V/0.1/X7R AVX 08051C223K4Z2A
V/0.1/X7R
AVX
7 C7 100 n Cap-0603-100 n/50 V/0.1/X7R AVX 06035C104K4Z2A
V/0.1/NP0
Kemet
8 C8 100 p Cap-0805-100 p/25 V/0.1/NP0 Kemet C0805C101K3GACTU
| XDPL8219 | Infineon | Application with flyback converter XDPL8219 |
| 06035C104K4Z2A | AVX | 7 C7 100 n Cap-0603-100 n/50 V/0.1/X7R AVX 06035C104K4Z2A |
| 08051C223K4Z2A | AVX | 6 C6 22 n Cap-0805-22n/100 V/0.1/X7R AVX 08051C223K4Z2A |
| 12061C103K4Z2A | AVX | capacitor automotive grade AVX 12061C103K4Z2A |
| SMBJ51A | Bourns | directional TVS diode/51 V Bourns SMBJ51A |
| C0603C181J5GACTU | Kemet | ceramic chip capacitor Kemet C0603C181J5GACTU |
| C0805C101K3GACTU | Kemet | 8 C8 100 p Cap-0805-100 p/25 V/0.1/NP0 Kemet C0805C101K3GACTU |
| HTSW-102-07-L-S | Samtec | Samtec HTSW-102-07-L-S |
| TSW-103-08-G-D | Samtec | pins, vertical, double row Samtec TSW-103-08-G-D |
| C3216X7R2A104K160AA | TDK | ceramic chip capacitor TDK C3216X7R2A104K160AA |
| C3225X7S2A475K200AB | TDK | ceramic chip capacitor TDK C3225X7S2A475K200AB |
| CRCW08051K50FKEA | Vishay | 22 R1 1.5 k 1.5 k/150 V/1 percent Vishay CRCW08051K50FKEA |
| CRCW12060000Z0EA | Vishay | 32 R12 0 R 0 R/200 V/20 mΩ Vishay CRCW12060000Z0EA |
| CRCW120618R2FKEA | Vishay | 23 R2 18.2 R 18.2R/200 V/1 percent Vishay CRCW120618R2FKEA |
| CRCW12061R40FKEA | Vishay | 34 R16 1.4 R 1.4 R/200 V/1 percent Vishay CRCW12061R40FKEA |
| ILD8150 | Infineon | Infineon’s hysteretic high-side MOSFET buck DC-DC LED driver IC ILD8150 |
| ILD8150E | Infineon | ILD8150/E 80 V high side buck LED driver IC with hybrid dimming |
| ILD8150E | Infineon | 37 U1 ILD8150E DC-DC LED driver IC Infineon ILD8150E |
| GCM1885C1H100JA16# | Murata | Murata GCM1885C1H100JA16# |
| CRCW12061R33FK | Vishay | resistor Vishay CRCW12061R33FK |
| CRCW12062R05FK | Vishay | resistor Vishay CRCW12062R05FK |
| CRCW12063R60FK | Vishay | resistor Vishay CRCW12063R60FK |
| CRCW12064R30FK | Vishay | resistor Vishay CRCW12064R30FK |
| V/0.1/X7R | AVX | 6 C6 22 n Cap-0805-22n/100 V/0.1/X7R AVX 08051C223K4Z2A |
| V/0.1/X7R | AVX | 7 C7 100 n Cap-0603-100 n/50 V/0.1/X7R AVX 06035C104K4Z2A |
| V/0.1/NP0 | Kemet | 8 C8 100 p Cap-0805-100 p/25 V/0.1/NP0 Kemet C0805C101K3GACTU |