XRP7704ILBTR-1003-F

XRP7704ILBTR-1003-F Datasheet

XRP7704

Part	Datasheet
XRP7704ILBTR-1003-F	XRP7704ILBTR-1003-F (pdf)

Related Parts	Information
XRP7704ILBTR-F	XRP7704ILBTR-F
XRP7704ILB-F	XRP7704ILB-F
XRP7704ILB-1003-F	XRP7704ILB-1003-F
XRP7704ILB-1002-F	XRP7704ILB-1002-F
XRP7704ILBTR-1002-F	XRP7704ILBTR-1002-F

PDF Datasheet Preview
XRP7704 Quad-Output Digital PWM Buck Controller September 2009 The XRP7704 is a quad-output pulse-width modulated PWM step-down DC-DC controller with a built-in LDO for standby power and GPIOs. The device provides a complete power management solution in one IC and is fully programmable via the included I2C serial interface. Independent Digital Pulse Width Modulator DPWM channels regulate output voltages and provide all required protection functions such as current limiting and over-voltage protection. Each output voltage can be programmed from 0.9V to 5.1V without the need of an external voltage divider. The wide range of the programmable DPWM switching frequency from 300 KHz to MHz enables the user to optimize between efficiency and component size. Input voltage range is from 6.5V to 20V. I2C bus interface is provided to program the IC as well as to communicate with the host for fault reporting and handling, power rail parameters monitoring, etc. The device offers a complete solution for soft-start and softstop. The start-up delay and ramp of each PWM regulator can be independently controlled. The device can start up a pre-biased PWM channel without causing large negative inductor current. Computing Servers, Storage Systems Consumer Set-top box STB , Game Systems Industrial ATE, DC-DC converters, Video Processing Plasma Display Panel PDP Networking and Telecommunications Equipment KEY FEATURES Four switching buck step-down controllers each with internal FET drivers 6.5V to 20V input voltage range no additional voltage rails required Output voltages programmable from 0.9V to 5.1V Up to 6 reconfigurable GPIO pins Fully programmable via I2C interface Independent Digital Pulse Width Modulator DPWM channels with five coefficient PID control High Integration elimination of external circuits and components required for compensation, parameter adjustment and interface Programmable DPWM frequency range 300 kHz to MHz enables efficiency and component size optimization Complete power monitoring and reporting Independently controlled start-up delay and ramp for each regulator, including soft start with a pre-biased load voltage Independently controlled soft-stop delay and ramp for each regulator with a programmable stop voltage Over-temperature protection OTP and Under Voltage Lockout UVLO per-channel over-current protection OCP and over-voltage protection OVP Built-in LDO configurable to 3.3V or 5V with over-current protection Non-volatile memory for system configuration development tools Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510 668-7000 • FAX 510 668-7017 • XRP7704 Quad-Output Digital PWM Buck Controller ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCCA, VCCD, LDOOUT, GLx, AVDD, VIN1, 22V -1V to 22V Logic 6V BSTx, 27V Storage -65°C to 150 °C Thermal 18°C/W Lead Temperature Soldering, 10 °C ELECTRICAL SPECIFICATIONS Unless otherwise specified Ta=Tj=25°C, ENABLE=HIGH, CGL=CGH=1nF. Those specifications denoted by a are guaranteed over the full operating temperature range, -40°C <Tj< 125°C. QUIESCENT CURRENT PARAMETER VIN Supply Current in STANDBY VIN Supply Current in SHUTDOWN VIN Supply Current VIN Supply Current MIN TYP MAX UNITS CONDITIONS ORDERING INFORMATION Junction Temperature Range Package to +125oC Lead Free 40 PIN 6 x 6 mm TQFN to +125oC ................Lead Free 40 PIN 6 x 6 mm TQFN, Tape and Reel The “AAAA” Suffix will differentiate the configuration of a specific customer. EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY. XRP7704 Quad-Output Digital PWM Buck Controller APPLICATION INFORMATION, Typical Performance Data at TA = 25°C, unless otherwise specified. 12Vin Efficiency Single Channel 300kHz - Channels not in use are disabled FET Si4944 Inductor 744314xxx 7x7x5mm 12Vin Combined Efficiency 5V, 3V3, 1V8 & 1V 5A 300kHz PWM Frequency FETs Si4944 Inductor 744314xxx 7x7x5mm 12Vin Efficiency Single Channel 300kHz - Channels not in use are disabled FET FDS8984 Inductor:744310200 7x7x3mm 12Vin Efficiency Single Channel 1MHz - Channels not in use are disabled FET FDS8984 Inductor:744310200 7x7x3mm EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY. XRP7704 Quad-Output Digital PWM Buck Controller APPLICATION INFORMATION Cont CH1:3.3V CH2:5V CH3:1V CH4:1.8V Simultaneous Start-up Configuration CH1:3.3V CH2:5V CH3:1V CH4:1.8V Simultaneous Soft-Stop CH1:3.3V CH2:5V CH3:1V CH4:1.8V Sequential Start-up Configuration CH1:5V CH2:3.3V CH3:1.8V CH4:1.2V Sequential Soft-Stop Configuration Vout Shutdown = 0.8V, 3A load CH1 Vout 5V Startup into 3V prebias - 5V output CH1:3.3V CH2:5V CH3:1V CH4:1.8V Sequential Soft-Stop Configuration Vout Shutdown = 0.8V, No load EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY. XRP7704 Quad-Output Digital PWM Buck Controller APPLICATION INFORMATION Cont CH1:Iout 1A/div CH2 Vout 3.3V Load Transient Response Temperature Regulation V out +/- 1% Vo window Temperature Regulation V out +/- 1% Vo window EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY. XRP7704 Quad-Output Digital PWM Buck Controller General DPWM Benefits - Eliminate temperature and time variations associated with passive components in o Output set point o Feedback compensation o Frequency set point o Under voltage lock out o Input voltage measurement o Gate drive dead time - Tighter parameter tolerances including operating frequency set point - Easy configuration and re-configuration for different VOUT, Iout, Cout, and Inductor selection by simply changing internal PID coefficients. No need to change external passives for a new output specification. - Higher integration Many external circuits can be handled by monitoring or modifying internal registers 4 Independent DPWM channels in a small package - Selectable DPWM frequency and Controller Clock Frequency Other Benefits - A single voltage is needed for regulation [no External LDO required]. - I2C interface allows o Communication with a System Controller or other Power Management devices for optimized system function o Access to modify or read internal registers that control or monitor Output Current Input and Output Voltage Soft-Start/Soft-Stop Time ‘Power Good’ Part Temperature Enable/Disable Outputs Over Current Over Voltage Temperature Faults Adjusting fault limits and disabling/enabling faults - 6 Configurable GPIO pins, 4 if I2C is in use . Pins can be configured in several ways o Fault reporting including OCP, OVP, Temperature, SoftStart in progress, Power Good o Allows a Logic Level interface with other non-digital IC’s or as logic inputs to other devices o Possible to configure as traditional ‘enable’ pin for all 4 outputs o 2 GPIOs can be dedicated to the I2C Interface as required by the customers design

PDF Datasheet Preview

XRP7704

Quad-Output Digital PWM Buck Controller

September 2009

The XRP7704 is a quad-output pulse-width modulated PWM step-down DC-DC controller with a built-in LDO for standby power and GPIOs. The device provides a complete power management solution in one IC and is fully programmable via the included I2C serial interface. Independent Digital Pulse Width Modulator DPWM channels regulate output voltages and provide all required protection functions such as current limiting and over-voltage protection. Each output voltage can be programmed from 0.9V to 5.1V without the need of an external voltage divider. The wide range of the programmable DPWM switching frequency from 300 KHz to MHz enables the user to optimize between efficiency and component size. Input voltage range is from 6.5V to 20V. I2C bus interface is provided to program the IC as well as to communicate with the host for fault reporting and handling, power rail parameters monitoring, etc. The device offers a complete solution for soft-start and softstop. The start-up delay and ramp of each PWM regulator can be independently controlled. The device can start up a pre-biased PWM channel without causing large negative inductor current.

Computing Servers, Storage Systems Consumer Set-top box STB , Game Systems Industrial ATE, DC-DC converters, Video Processing Plasma Display Panel PDP Networking and Telecommunications Equipment

KEY FEATURES

Four switching buck step-down controllers each with
internal FET drivers
6.5V to 20V input voltage range no additional voltage
rails required

Output voltages programmable from 0.9V to 5.1V Up to 6 reconfigurable GPIO pins Fully programmable via I2C interface Independent Digital Pulse Width Modulator DPWM
channels with five coefficient PID control

High Integration elimination of external circuits and
components required for compensation, parameter adjustment and interface

Programmable DPWM frequency range 300 kHz to

MHz enables efficiency and component size optimization

Complete power monitoring and reporting Independently controlled start-up delay and ramp for each
regulator, including soft start with a pre-biased load voltage

Independently controlled soft-stop delay and ramp for
each regulator with a programmable stop voltage

Over-temperature protection OTP and Under Voltage

Lockout UVLO per-channel over-current protection OCP and over-voltage protection OVP

Built-in LDO configurable to 3.3V or 5V with over-current
protection

Non-volatile memory for system configuration development tools

Exar Corporation 48720 Kato Road, Fremont CA, 94538
• 510 668-7000
• FAX 510 668-7017
•

XRP7704 Quad-Output Digital PWM Buck Controller

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

VCCA, VCCD, LDOOUT, GLx, AVDD,

VIN1, 22V -1V to 22V Logic 6V BSTx, 27V Storage -65°C to 150 °C Thermal 18°C/W Lead Temperature Soldering, 10 °C

ELECTRICAL SPECIFICATIONS

Unless otherwise specified Ta=Tj=25°C, ENABLE=HIGH, CGL=CGH=1nF. Those specifications denoted by a are guaranteed over the full operating temperature range, -40°C <Tj< 125°C.

QUIESCENT CURRENT PARAMETER

VIN Supply Current in STANDBY

VIN Supply Current in SHUTDOWN

VIN Supply Current

VIN Supply Current

MIN TYP MAX

UNITS

CONDITIONS
ORDERING INFORMATION

Junction Temperature Range

Package
to +125oC Lead Free 40 PIN 6 x 6 mm TQFN
to +125oC ................Lead Free 40 PIN 6 x 6 mm TQFN, Tape and Reel

The “AAAA” Suffix will differentiate the configuration of a specific customer.

EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.

XRP7704 Quad-Output Digital PWM Buck Controller

APPLICATION INFORMATION, Typical Performance Data
at TA = 25°C, unless otherwise specified.
12Vin Efficiency Single Channel 300kHz - Channels not in use are disabled FET Si4944 Inductor 744314xxx 7x7x5mm
12Vin Combined Efficiency 5V, 3V3, 1V8 & 1V 5A 300kHz PWM Frequency

FETs Si4944 Inductor 744314xxx 7x7x5mm
12Vin Efficiency Single Channel 300kHz - Channels not in use are disabled FET FDS8984 Inductor:744310200 7x7x3mm
12Vin Efficiency Single Channel 1MHz - Channels not in use are disabled FET FDS8984 Inductor:744310200 7x7x3mm

EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.

XRP7704 Quad-Output Digital PWM Buck Controller

APPLICATION INFORMATION Cont

CH1:3.3V CH2:5V CH3:1V CH4:1.8V Simultaneous Start-up Configuration

CH1:3.3V CH2:5V CH3:1V CH4:1.8V Simultaneous Soft-Stop

CH1:3.3V CH2:5V CH3:1V CH4:1.8V Sequential Start-up Configuration

CH1:5V CH2:3.3V CH3:1.8V CH4:1.2V Sequential Soft-Stop Configuration

Vout Shutdown = 0.8V, 3A load

CH1 Vout 5V Startup into 3V prebias - 5V output

CH1:3.3V CH2:5V CH3:1V CH4:1.8V Sequential Soft-Stop Configuration

Vout Shutdown = 0.8V, No load

EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.

XRP7704 Quad-Output Digital PWM Buck Controller

APPLICATION INFORMATION Cont

CH1:Iout 1A/div CH2 Vout 3.3V Load Transient Response

Temperature Regulation V out +/- 1% Vo window

Temperature Regulation V out +/- 1% Vo window

EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.

XRP7704 Quad-Output Digital PWM Buck Controller

General DPWM Benefits - Eliminate temperature and time variations associated with passive components in o Output set point o Feedback compensation o Frequency set point o Under voltage lock out o Input voltage measurement o Gate drive dead time
- Tighter parameter tolerances including operating frequency set point
- Easy configuration and re-configuration for different VOUT, Iout, Cout, and Inductor selection by simply changing internal PID coefficients. No need to change external passives for a new output specification.
- Higher integration Many external circuits can be handled by monitoring or modifying internal registers 4 Independent DPWM channels in a small package
- Selectable DPWM frequency and Controller Clock Frequency

Other Benefits - A single voltage is needed for regulation [no External LDO required]. - I2C interface allows o Communication with a System Controller or other Power Management devices for optimized system function o Access to modify or read internal registers that control or monitor Output Current Input and Output Voltage Soft-Start/Soft-Stop Time ‘Power Good’ Part Temperature Enable/Disable Outputs Over Current Over Voltage Temperature Faults Adjusting fault limits and disabling/enabling faults
- 6 Configurable GPIO pins, 4 if I2C is in use . Pins can be configured in several ways o Fault reporting including OCP, OVP, Temperature, SoftStart in progress, Power Good o Allows a Logic Level interface with other non-digital IC’s or as logic inputs to other devices o Possible to configure as traditional ‘enable’ pin for all 4 outputs o 2 GPIOs can be dedicated to the I2C Interface as required by the customers design

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived XRP7704ILBTR-1003-F Datasheet file may be downloaded here without warranties.

Datasheet ID: XRP7704ILBTR-1003-F 512931