Supports Multiple Current Sensing Methods
Lossless Inductor DCR Current Sensing
Precision Resistor Current Sensing
Differential Remote Voltage Sensing
Programmable VBOOT Voltage at Start-up
Resistor Programmable IMAX, Switching Frequency for Both Outputs
Adaptive Body Diode Conduction Time Reduction
Description
The ISL95833 Pulse Width Modulation (PWM) controller IC provides a complete solution for IMVP-7/VR12™ compliant
microprocessor and graphic processor core power supplies. It provides the control and protection for two Voltage
Regulators (VRs). The first VR, typically for V
CORE
, incorporates 1 integrated driver and can operate in 2- or 1-phase
configurations. The second VR, typically for Graphics, is a single phase regulator incorporating an integrated driver. The
two VRs share a serial control bus to communicate with the CPU and achieve lower cost and smaller board area
compared with the two-chip approach.
Both VRs utilize Intersil's Robust Ripple Regulator R3 Technology™. The R3 modulator has numerous advantages
compared to traditional modulators, including faster transient response, variable switching frequency during load
transients, and improved light load efficiency due to its ability to automatically change switching frequency.
The ISL95833 has several other key features. Both outputs support either DCR current sensing with a single NTC
thermistor for DCR temperature compensation, or more precise resistor current sensing if desired. Both outputs come
with remote voltage sense, programmable VBOOT voltage, IMAX, and switching frequency, adjustable overcurrent
protection and separate Power-Good signals.
Pricing / Packaging / Samples / Ordering
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Available in RoHS/Pb-Free
Part No.
Design-In
Status Temp. Package MSL
Price
US $
ISL95833HRTZ Active Hi-Temp Comm 32 Ld TQFN 3
ISL95833HRTZ-T Active Hi-Temp Comm 32 Ld TQFN T+R 3
ISL95833IRTZ Active Ind 32 Ld TQFN 3
ISL95833IRTZ-T Active Ind 32 Ld TQFN T+R 3
The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices
in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing
Technical Documentation
Datasheet(s):
