XC9711
SMALL BUCK DC/DC CONVERTER FOR INDUSTRIAL APPLICATIONS
60V 1A Synchronous Step-Down DC/DC Converter, Topr≤125ºC
For modern electronic systems operating from 12V or 24V power rails, stable and efficient DC/DC conversion is essential to ensure reliable performance across various loads and operating conditions. Torex’s latest power management solutions are designed to meet these requirements with compact form factors, high efficiency, and low noise characteristics. The XC9711 supports a wide input voltage range, easily handling overshoot on 24V lines.
The XC9711 and its sister product XC9702 (60V 300mA) enable significant miniaturisation by reducing the number and size of peripheral components, while maintaining high efficiency even at light loads. They support large step-down ratios, including direct conversion to 3.3V, and feature low-noise operation through a selectable F-PWM/PWM-PFM mode control.
KEY FEATURES:
- Wide Input Voltage Range
- Up to 60V (61.5V Ab. Max.)
- Supports high step-down ratio.
- Wide Operating Temperature Range
- -40ºC to 125ºC
- Thermal Shutdown @ 160ºC
- Switch between PWM and PWM/PFM operation using the MODE pin
- Low Current Consumption
- Only 9 μA Quiescent Current
- 0.8 μA in Standby Mode
- Space Saving Solution
- Ultra-small Package (3.0 x 3.0 x 0.75mm)
- Replace inefficient Linear Regulators
KEY ELECTRICAL PARAMETERS:
| SERIES | XC9711  |
||
| IOUT (max) | 1.0 A | ||
|
ON Resistance (Typ.) |
N-Ch (H) |
0.42 Ω
|
|
| N-Ch (L) | 0.25 Ω | ||
| VIN Range | 4.5 V ~ 60 V | ||
| VOUT Range | 2.5 V ~ 18.0 V | ||
| FB Voltage | 0.75 V ±1.5% | ||
| Switching Frequency | 800kHz | ||
| Operation Mode | PWM (MODE=”H”) | ||
| PWM/PFM (MODE=”L”) | |||
| Quiescent Current (Typ.) | 9 μA | ||
| Standby Current (Typ.) | 0.8 μA | ||
| Protection Circuits | Current Limit (Foldback) | ||
| Output Over Voltage Protection | |||
| Lx short protection | |||
| Thermal Shutdown (160 ºC) | |||
| Other Features | Adjustable Soft-Start | ||
| Power Good | |||
| Inductor Value | 10 μH | ||
| Amb. Op. Temp. Range | -40 ~ 125 ºC | ||
| Standard Packages | DFN3030-12A or HSOP-8N | ||
| Smallest Package (mm) | 3.0 x 3.0 x 0.75mm | ||
TYPICAL APPLICATION CIRCUIT
PCB LAYOUT
EFFICIENCY vs. OUTPUT CURRENT
RIPPLE VOLTAGE vs. OUTPUT CURRENT
APPLICATION BLOCK DIAGRAM FOR SMALL INDUSTRIAL SENSORS
12V/24V TO 5.0V, THEN TO 3.3V
- Control the sequence of the subsequent power supply with the PG of the XC9711
- Supervise 12V/24V power voltage with XC6138N and monitor output to MCU
12V/24V DIRECTLY TO 3.3V
The control method can be changed dynamically with the MODE pin.
- MODE “H” = PWM ⇒ Low noise (For sensors, etc.)
- MODE “L” = PWM/PFM ⇒ High efficiency at light load
PACKAGE AND PIN-OUT
Solutions for Inverting, Positive and Negative, Flyback and Isolation/Multi-Channel
XC9711 can also be used for solutions including Inverting, Positive and Negative, Flyback, and Isolation/Multi-Channel applications.
To learn more, download the presentation by clicking on the image below.
