ISL9444
ISL9444 is Synchronous Step-Down PWM Controller manufactured by Renesas.
Features
- Three Integrated Synchronous Buck PWM Controllers
- Internal Bootstrap Diodes
- Independent Programmable Output Voltage
- Independent Power-Good Indicators, Soft-Starting and Tracking
- Power Failure Monitor
- Light Load Efficiency Enhancement
- Low Ripple Diode Emulation Mode with Pulse Skipping
- Supports Pre-Biased Output
- Programmable Frequency: 200k Hz to 1200k Hz
- Adaptive Shoot-through Protection
- Out-of-Phase Switching (0°/180°/0°)
- No External Current Sense Resistor
- Uses Lower MOSFET’s r DS(ON)
- plete Protection
- Overcurrent, Overvoltage, Over-Temperature
- Wide Input Voltage Range: 4.5V to 28V
- Pb-Free (Ro HS pliant)
Applications
- Vo X Gateway Devices
- NAS/SAN Devices
- ATX Power Supplies
+12V
+
Q1
CIN1 CIN2
VOUT1 +1.0V, 6A
CO1+ 100µF
L1 1.0µH
R4 15.8kΩ
RESN1 1.3kΩ
+12V R2
62kΩ
R1 10kΩ
C1 4.7µF
R3 31.6kΩ
RT 49.9kΩ
CSS 10n F
SGND OCSET1 OCSET2 OCSET2 MODE/SYNC CLKOUT PGOOD1,2,3 TK/SS2,3 FB3
LGATE1...
