900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Renesas Electronics Components Datasheet

ISL6562 Datasheet

Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller

No Preview Available !

DATASHEET
ISL6562
Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
FN9012
Rev 0.00
Mar 23, 2001
The ISL6562 two-phase current mode, PWM control IC
together with companion gate drivers, the HIP6601A,
HIP6602A, HIP6603A or HIP6604 and MOSFETs provides a
precision voltage regulation system for advanced
microprocessors. Two-phase power conversion is a marked
departure from earlier single phase converter configurations
previously employed to satisfy the ever increasing current
demands of modern microprocessors. Multi-phase
converters, by distributing the power and load current results
in smaller and lower cost transistors with fewer input and
output capacitors. These reductions accrue from the higher
effective conversion frequency with higher frequency ripple
current due to the phase interleaving process of this
topology. For example, a two phase converter operating at
350kHz per phase will have a ripple frequency of 700kHz.
Moreover, greater converter bandwidth of this design results
in faster response to load transients.
Outstanding features of this controller IC include
programmable VID codes from the microprocessor that
range from 1.050V to 1.825V with an accuracy of 0.8%.
Pull up currents on these VID pins eliminates the need for
external pull up resistors.
Another feature of this controller IC is the PWRGD monitor
circuit which is held low until the CORE voltage increases, to
within 18% of the programmed voltage. Over-voltage, 24%
above programmed CORE voltage, results in the PWRGD
output going low to indicate that the CORE is above the
specified limit. Under voltage is also detected and results in
PWRGD going low if the CORE voltage falls 18% below the
programmed level. Over-current protection folds back the
output voltage to 95mV, reducing the regulator dissipation.
These features provide monitoring and protection for the
microprocessor and power system.
Ordering Information
PART NUMBER TEMP. (oC) PACKAGE
ISL6562CB
0 to 70 16 Ld SOIC
ISL6562CB-T
16 Ld SOIC Tape and Reel
ISL6560/62EVAL1 Evaluation Platform
PKG. NO.
M16.15
Features
• Two-Phase Power Conversion
• Precision Channel Current Sharing
• Precision CORE Voltage Regulation
- 0.8% Accuracy
• Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 1.050V to 1.825V in 25mV Steps
- Programmable “Droop” Voltage
• Fast Transient Recovery Time
• Over Current Protection
• High Ripple Frequency, (Channel Frequency
Times Number of Channels). . . . . . . . . . . . . 100kHz to 2MHz
Applications
• VRM8.5 Modules
• Intel® Tualatin Processor Voltage Regulator
• Low Output Voltage, High Current DC/DC Converters
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Pinout
ISL6562 (SOIC)
TOP VIEW
VID3 1
VID2 2
VID1 3
VID0 4
VID25mV 5
COMP 6
FB 7
CT 8
16 VCC
15 REF
14 CS-
13 PWM1
12 PWM2
11 CS+
10 PWRGD
9 GND
FN9012 Rev 0.00
Mar 23, 2001
Page 1 of 6


Renesas Electronics Components Datasheet

ISL6562 Datasheet

Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller

No Preview Available !

ISL6562
Block Diagram
REF
VCC
PWRGD
VID3
VID2
VID1
VID0
VID25mV
FB
COMP
D/A
3V REFERENCE
X 0.82
X1.24
+-
UV
+-
OVP
E/A
+-
UVLO and
BIAS CIRCUITS
OSCILLATOR
CONTROL
LOGIC
CMP
+-
CT
PWM1
PWM2
CS+
CS-
GND
Simplified Power System Diagram
FB
ISL6562
PWM 1
SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
PWM 2 SYNCHRONOUS
RECTIFIED BUCK
CHANNEL
VID
MICROPROCESSOR
Functional Pin Description
VID3 1
VID2 2
VID1 3
VID0 4
VID25mV 5
COMP 6
FB 7
CT 8
16 VCC
15 REF
14 CS-
13 PWM1
12 PWM2
11 CS+
10 PWRGD
9 GND
VID3 (Pin 1), VID2 (Pin 2), VID1 (Pin 3), VID0 (Pin 4)
and VID25mV (Pin 5)
Voltage Identification inputs from microprocessor. These pins
respond to TTL and 3.3V logic signals. The ISL6562 decodes
VID bits to establish the output voltage. See Table 1.
COMP (Pin 6)
Output of the internal transconductance error amplifier.
Voltage at this terminal sets the output current level of the
Current Sense Comparator. Pulling this pin to ground disables
the oscillator and drives both PWM outputs low.
FB (Pin 7)
Inverting input of the internal transconductance error amplifier.
CT (Pin 8)
A capacitor on this terminal sets the frequency of the internal
oscillator.
GND (Pin 9)
Bias and reference ground. All signals are referenced to this
pin.
PWRGD (Pin 10)
Open drain connection. A high voltage level at this pin with a
resistor connected to this terminal and VCC indicates that
CORE voltage is at the proper level,
CS+ (Pin 11) and CS- (Pin 14) These inputs monitor the
supply current to the converter positive input voltage. CS+ is
connected directly to the decoupled supply voltage and current
sampling resistor. CS- is connected to the other end of the
current sampling resistor and the upper drains of the series
transistors.
PWM2 (Pin 12) and PWM1 (Pin 13)
PWM outputs connected to the gate driver ICs.
REF (Pin 15)
Three volt supply used to bias the output of the
transconductance amplifier.
VCC (Pin 16)
Bias supply. Connect this pin to a 12V supply.
FN9012 Rev 0.00
Mar 23, 2001
Page 2 of 6


Part Number ISL6562
Description Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Maker Renesas
Total Page 6 Pages
PDF Download

ISL6562 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 ISL6560 Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Renesas
2 ISL6561 Multi-Phase PWM Controller
Renesas
3 ISL6562 Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
Renesas
4 ISL6563 Two-Phase Multiphase Buck PWM Controller
Renesas
5 ISL6564 Multiphase PWM Controller
Renesas
6 ISL6564A Multiphase PWM Controller
Renesas
7 ISL6565 Multi-Phase PWM Controller with Precision rDS(ON) or DCR Current Sensing for VR10.X Application
Intersil Corporation
8 ISL6565A Multi-Phase PWM Controller
Renesas
9 ISL6565B Multi-Phase PWM Controller
Renesas





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy