FFSD0665A - SiC Diode - 650V, 6A, DPAK - 艾金森 Dratk MMBZ5270B - 225 mW 91 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSD0865A - SiC Diode - 650V, 8A, DPAK - 艾金森 Dratk FFSD1065A - SiC Diode - 650V, 10A, DPAK - 艾金森 Dratk MMBZ5V6A - Zener Transient Voltage Supressor, Dual, 5.6 V, Common Anode - 艾金森 Dratk FFSH10120A - SiC Diode, 1200V, 10A, TO-247-2 - 艾金森 Dratk MMBZ6V2A - 6.2 V Dual Common Anode Zener?Diode?Transient Voltage Suppressor - 艾金森 Dratk FFSH10120A-F085 - SiC Schottky Diode 1200 V, 10 A - 艾金森 Dratk MMBZ6V8A - 6.8 V Dual Common Anode Zener?Diode?Protection - 艾金森 Dratk FFSH1665A - SiC Diode - 650 V, 16 A - 艾金森 Dratk MMBZ9V1A - 9.1 V Dual Common Anode Zener?Diode?Transient Voltage Suppressor - 艾金森 Dratk FFSH1665ADN - SiC Diode, 650V, 16A, TO-247-3, Common Cathode - 艾金森 Dratk MMSZ10 - 500 mW 10 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH20120A-F085 - SiC Schottky Diode, 1200V, 20A - 艾金森 Dratk MMSZ11 - 500 mW 11 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk MMSZ12 - 500 mW 12 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH20120ADN-F085 - SiC, Dual Die, 1200 V, 20 A - 艾金森 Dratk MMSZ13 - 500 mW 13 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH2065A - SiC Diode - 650 V, 20 A - 艾金森 Dratk MMSZ13E - 225 W Energy Rated Zener 13 V SOD-123 - 艾金森 Dratk FFSH2065ADN - SiC Diode, 650V, 20A, TO-247-3, Common Cathode - 艾金森 Dratk MMSZ15 - 500 mW 15 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH2065BDN_F085 - Automotive Silicon Carbide (SiC) Schottky Diode, 650 V - 艾金森 Dratk MMSZ15E - 225 W Energy Rated Zener 15 V SOD-123 - 艾金森 Dratk FFSH30120A - SiC Diode, 1200V, 30A, TO-247-2 - 艾金森 Dratk MMSZ16 - 500 mW 16 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH3065A - SiC Diode - 650 V, 30 A - 艾金森 Dratk MMSZ18 - 500 mW 18 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH3065ADN - SiC Diode, 650V, 30A, TO-247-3, Common Cathode - 艾金森 Dratk MMSZ18E - 18 V, 225 W Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH3065B_F085 - Automotive Silicon Carbide (SiC) Schottky Diode, 650 V - 艾金森 Dratk MMSZ18VCF - 1W Zeners - 艾金森 Dratk FFSH40120A - SiC Schottky Diode, 1200 V, 40 A - 艾金森 Dratk MMSZ20 - 500 mW 20 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk MMSZ20VCF - 1W Zeners - 艾金森 Dratk FFSH40120ADN-F085 - SiC, Dual Die, 1200 V, 40 A - 艾金森 Dratk MMSZ22 - 500 mW 22 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH4065A - SiC Diode, 650V, 40A, TO-247-2 - 艾金森 Dratk MMSZ24 - 500 mW 24 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH4065ADN-F155 - SiC Diode, 650V, 40A, TO-247-3, Common Cathode - 艾金森 Dratk MMSZ27 - 500 mW 27 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSH50120A - SiC Diode, 1200V, 10A, TO-247-2 - 艾金森 Dratk MMSZ27E - 225 W Energy Rated Zener 27 V SOD-123 - 艾金森 Dratk FFSH5065A - SiC Diode, 650V, 50A, TO-247-2 - 艾金森 Dratk MMSZ28VCF - 1W Zeners - 艾金森 Dratk FFSPF0665A - SiC Diode - 650V, 6A, TO-220FP-2 - 艾金森 Dratk MMSZ2V4 - 500 mW 2.4 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSPF0865A - SiC Diode - 650V, 8A, TO-220FP-2 - 艾金森 Dratk MMSZ2V7 - 500 mW 2.7 V ±5% Zener?Diode?Voltage Regulator - 艾金森 Dratk FFSPF1065A - SiC Diode - 650V, 10A, TO-220FP-2 - 艾金森 Dratk
ISL6422B
Highly Integrated Dual Output LNB Supply and Control Voltage Regulator with I2C Interface

热度 207

The ISL6422B is a highly integrated voltage regulator and interface IC, specifically designed for supplying power and control signals from advanced satellite set-top box (STB) modules to the low noise blocks (LNBs) of two antenna ports. The device is consists of two independent currentmode boost PWMs and two low-noise linear regulators along with the circuitry required for 22kHz tone generation, modulation and I2C device interface. The device makes the total LNB supply design simple, efficient and compact with low external component count.

Two independent current-mode boost converters provide the linear regulators with input voltages that are set to the final output voltages, plus typically 0.8V to insure minimum power dissipation across each linear regulator. This maintains constant voltage drops across each linear pass element while permitting adequate voltage range for tone injection.

The final regulated output voltages are available at two output terminals to support simultaneous operation of two antenna ports for dual tuners. The outputs for each PWM can be controlled in two ways, full control from I2C using the VTOP1, VTOP2 and VBOT1, VBOT2 bits or set the I2C to the lower range ie 13V/14V and switch to higher range ie 18V/19V with the SELVTOP1, SELVTOP2 pins. All the functions on this IC are controlled via the I2C bus by writing 8 bits words onto the System Registers (SR). The same register can be read back, and four bits per output will report the diagnostic status. Separate enable commands sent on the I2C bus provide independent standby mode control for each PWM and linear combination, disabling the output into shutdown mode. Each output channel is capable of providing 750mA of continuous current. The overcurrent limit can be digitally programmed.

The External modulation input EXTM1, EXTM2 can accept a modulated DiSEqC command and transfer it symetrically to the output. Alternatively the EXTM1, EXTM2 pins can be used to modulate the continuous internal tone. The FLT pin serves as an interrupt for the processor when any condition turns OFF the LNB controller (Over- Temperature, Overcurrent, Disable). The nature of the fault can be read of the I2C registers.

  • Single Chip Power Solution
    • True Dual Operation for 2-Tuner/2-Dish Applications
    • Both Outputs May be Enabled Simultaneously at Maximum Power
    • Integrated DC/DC Converter and I2C Interface
      • LNB Power Supply and Control for Satellite Set-Top Box
 
Alternatives
Parameters ISL6422B ISL9491 ISL6421A ISL6423B
VIN (min) (V)8 8 8 8
VIN (max) (V)14 14 14 14
VOUT (min) (V)13.3/14.3 13.3 13 13.3/14.3
VOUT (max) (V)18.3/19.3 20 18 18.3/19.3
IOUT (max) (mA)750x2 860 500 750
IBIAS (min)3 mA 4 mA 1.5 mA 1.5 mA
Qualification LevelStandard Standard Standard Standard

Renesas 官网地址

LNB 稳压器
门户

新闻

创意思路

海外资讯