ISL62875 PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator

ISL62875

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PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator

Datasheets,
Related Docs
& Simulations

Ordering Information

iBuy direct from Intersil	iBuy direct - out of stock	Request samples
Check distributor inventory	Available in RoHS/Pb-Free

Part No.

Design-In
Status

Temp.

Package

MSL

Price
US $

ISL62875HRUZ-T

Active

Hi-Temp Comm

20 Ld uTQFN T+R

1.37

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

Description

The ISL62875 is a Single-Phase Synchronous-Buck PWM voltage regulator featuring Intersils Robust Ripple Regulator (R³) Technology™. The wide 3.3V to 25V input voltage range is ideal for systems that run on battery or AC-adapter power sources. The ISL62875 is a low-cost solution for applications requiring dynamically selected slew-rate controlled output voltages. The soft-start and dynamic setpoint slew-rates are capacitor programmed. Voltage identification logic-inputs select four resistor-programmed setpoint reference voltages that directly set the output voltage of the converter between 0.5V to 1.5V, and up to 3.3V using a feedback voltage divider. Robust integrated MOSFET drivers and Schottky bootstrap diode reduce the implementation area and component cost.

Intersils R³ Technology™ combines the best features of both fixed-frequency and hysteretic PWM control. The PWM frequency is 500kHz during static operation, becoming variable during changes in load, setpoint voltage, and input voltage when changing between battery and AC-adapter power. The modulators ability to change the PWM switching frequency during these events in conjunction with external loop compensation produces superior transient response. For maximum efficiency, the converter automatically enters diodeemulation mode (DEM) during light-load conditions such as system standby

Key Features

Input Voltage Range: 3.3V to 25V
Output Voltage Range: 0.5V to 3.3V
Output Load up to 30A
Extremely Flexible Output Voltage Programmability
- 2-Bit VID Selects Four Independent Setpoint Voltages
- Simple Resistor Programming of Setpoint Voltages
- Accepts External Setpoint Reference such as DAC
±0.75% System Accuracy: -10C to +100C
Fixed 500kHz PWM Frequency in Continuous Conduction
Integrated High-current MOSFET Drivers and Schottky Boot-Strap Diode for Optimal Efficiency

Related Documentation

Datasheet(s):
PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator

Technical Brief(s):
PCB Land Pattern Design and Surface Mount Guidelines for QFN (MLFP) Packages

Parametric Data


V_IN (min) (V)		3.3

V_IN (max) (V)		25

V_OUT (min) (V)		.5

V_OUT (max) (V)		3.3

I_OUT (max) (A)		30

V_BIAS (V)		5

Applications		GPU core power, I/O Controller Hub, Memory Controller Hub

Applications

Mobile PC GPU Core Power
Mobile PC I/O Controller Hub (ICH) VCC Rail
Tablet PCs/Slates and Netbooks
Hand-Held Portable Instruments

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Parametric Table

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