LP87564-Q1 Four-Phase 4 A per Phase Buck Converter with Integrated Switches | TI.com

LP87564-Q1 (ACTIVE) Four-Phase 4 A per Phase Buck Converter with Integrated Switches

 

Description

The LP8756x-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output, 3-phase and 1-phase outputs, 2-phase and 2-phase outputs, one 2-phase and two 1-phase outputs, or four 1-phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals.

The automatic pulse-width-modulation (PWM) to pulsed-frequency-modulation (PFM) operation (AUTO mode), together with the automatic phase adding and phase shedding, maximizes efficiency over a wide output-current range. The LP8756x-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) improving the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP8756x-Q1 device supports load-current measurement without the addition of external current-sense resistors. The device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can include GPIO signals to control external regulators, load switches, and processor reset. During start-up and voltage change, the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage: 2.8 V to 5.5 V
  • Output Voltage: 0.6 V to 3.36 V
  • Four High-Efficiency Step-Down DC/DC Converter Cores:
    • Maximum Output Current: 16 A (4 A per Phase)
    • Programmable Output Voltage Slew-Rate: 0.5 mV/µs to 10 mV/µs
  • Switching Frequency: 2 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Programmable Power-Good Signal (PGOOD)
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)

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Parametrics

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Part number Order Regulated outputs (#) Processor supplier Processor name Vin (Min) (V) Vin (Max) (V) Step-up DC/DC controller Step-down DC/DC controller LDO Step-up DC/DC converter Step-down DC/DC converter Iout (Max) (A) Iq (Typ) (mA) Features Shutdown current (Typ) (uA) Rating Operating temperature range (C) Configurability Package Group Package size: mm2:W x L (PKG)
LP87564-Q1 Order now 4         2.8     5.5     0     0     0     0     4     4       Diagnostics
Dynamic Voltage Scaling
Enable
Enable Pin
I2C Control
Over Current Protection
Power Good
Power Sequencing
Power Supply and System Monitoring
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Fixed    
  Automotive     -40 to 125     Factory programmable
Software configurable    
VQFN-HR | 26     26VQFN-HR: 18 mm2: 4 x 4.5 (VQFN-HR | 26)    
LP873220-Q1 Order now 4     Texas Instruments     DRA71x
DRA79x    
2.8     5.5     0     0     2     0     2     2       Enable Pin
I2C Control
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable    
  Automotive     -40 to 125       VQFN | 28     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)    
LP87332A-Q1 Order now 4     TI     TDA3x     2.8     5.5     0     0     2     0     2     3       Enable Pin
I2C Control
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Adjustable    
  Automotive     -40 to 125       VQFN | 28     28VQFN: 25 mm2: 5 x 5 (VQFN | 28)    
LP87524B-Q1 Order now 4     Texas Instruments     AWR1243     2.8     5.5     0     0     0     0     4     4     0.0067     Diagnostics
Dynamic Voltage Scaling
Enable
I2C Control
Over Current Protection
Power Good
Power Sequencing
Spread-Spectrum Clock (SSC) Generation
Thermal Shutdown
UVLO Fixed    
1.4     Automotive     -40 to 125     Factory programmable
Software configurable    
VQFN-HR | 26     26VQFN-HR: 18 mm2: 4 x 4.5 (VQFN-HR | 26)    
LP87524J-Q1 Order now 4     Texas Instruments     AWR1243, AWR1443     2.8     5.5     0     0