XL6019 boost converter: specs and pinout
Boost (step-up) converter module built around the XLSEMI XL6019 chip. The chip is documented here; the module board is not.
Specs
| Spec | Value | Source |
|---|---|---|
| Input voltage range (XL6019 chip) | 5 V to 40 V | source XLSEMI XL6019 datasheet Rev 1.5, Features p.1; Electrical Characteristics (DC parameters) p.5 |
| Switch current limit (XL6019 chip) | 5 A (maximum switching current) | source XLSEMI XL6019 datasheet Rev 1.5, Features p.1; Electrical Characteristics p.5 |
| Switching frequency (XL6019 chip) | 180 kHz fixed (144-253 kHz) | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5 |
| Feedback reference (XL6019 chip) | 1.25 V (1.213-1.287 V) | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5 |
| Switch pin overvoltage protection (XL6019 chip) | 60 V on the SW pin | source XLSEMI XL6019 datasheet Rev 1.5, Typical Application Circuit p.3; Electrical Characteristics p.5 |
| Efficiency example (XL6019 chip) | 93% typical at Vin = 12 V, Vout = 24 V, Iout = 1 A | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5 |
| Quiescent current (XL6019 chip) | 2.5 mA typical, 5 mA maximum | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5 |
| Shutdown supply current (XL6019 chip, EN low) | 70 uA typical, 100 uA maximum (EN low) | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5 |
| Absolute maximum input voltage (XL6019 chip) | 45 V on VIN; 60 V on SW | source XLSEMI XL6019 datasheet Rev 1.5, Absolute Maximum Ratings p.4 |
| Operating junction temperature (XL6019 chip) | -40 C to 125 C | source XLSEMI XL6019 datasheet Rev 1.5, Absolute Maximum Ratings p.4 |
Power
| Value | Source | |
|---|---|---|
| Supply | Chip input 5-40 V; the module board's own limits are not covered by the maker document | source XLSEMI XL6019 datasheet Rev 1.5, Electrical Characteristics p.5; chip switch current limit 5 A |
Chip pins
These are the pins of the chip on the module, from the chip datasheet. The module's own header may label or expose them differently.
The module board (adjustment, input and output terminals, diode, inductor, fitted parts) is not covered by an official document. Pin rows are the XL6019 chip's TO263-5L pins.
| Pin | Function | Voltage | Notes | Source |
|---|---|---|---|---|
| 1 | GND | Ground | source XLSEMI XL6019 datasheet Rev 1.5, Table 1, p.2 | |
| 2 | EN | Enable; high turns it on, floating is default high | source XLSEMI XL6019 datasheet Rev 1.5, Table 1, p.2 | |
| 3 | SW | Power switch output pin | source XLSEMI XL6019 datasheet Rev 1.5, Table 1, p.2 | |
| 4 | VIN | 5-40 V | Supply input; bypass to GND with a large capacitor | source XLSEMI XL6019 datasheet Rev 1.5, Table 1, p.2 |
| 5 | FB | 1.25 V threshold | Feedback pin; external divider senses the output voltage | source XLSEMI XL6019 datasheet Rev 1.5, Table 1, p.2 |
Build with it
Project ideas for the XL6019 boost converter. Each link opens Soldr with the prompt filled in; Soldr assigns the pins, checks power and shows how to wire every part.
- A bench setup to set a boost converter module to 12 V and check it with a multimeter, powered by two 18650 cells: Two cells in series are about 7.4 V, inside the XL6019 chip's 5-40 V input range. The module's output setting is not documented, so set and check the output with the meter before any load is connected. Use cells with protection, and stop using the pack well before it falls toward 5 V.
- Two-cell 18650 to 12 V converter: Two cells in series are about 7.4 V, inside the chip's 5-40 V input range; stop using the pack well before it falls toward 5 V. The 6010 fan needs 12 V at 0.15 A. Use cells with protection. The module's output setting is not documented: set and check the output with a meter before connecting the fan.
- Boost converter efficiency test: The ESP32 reads the INA226 over I2C to compare input and output power of the converter, using a 12 V fan as the load. Two 18650 cells in series are about 7.4 V, inside the XL6019 chip's input range; use cells with protection and check the module's input terminals first. Learning project. The module's output setting is not documented: set and check the output with a meter before connecting the fan.
Common mistakes
- Input outside 5-40 V: the chip's operating input range is 5 V to 40 V and VIN must not exceed 45 V (source: link, p.5 and Absolute Maximum Ratings p.4)
- Expecting 5 A of output current: 5 A is the chip's switch current limit, and a boost converter's input current is higher than its output current, so output current is lower; the module's own rating is not documented (source: link, p.1 and p.5)
- Setting an output above the SW pin rating: SW overvoltage protection is at 60 V (source: link, p.5)
Not covered by the official source
- The module board is not documented: output current rating, adjustment method and range, input connector and terminal labels are unknown.
- The chip's recommended-output-current charts are graphs and are not read here.
Sources
- link (XLSEMI XL6019 datasheet, Rev 1.5)