MPQ8878-AEC1

MPQ8878-AEC1

36V, 10A, Four-Switch, Synchronous Buck-Boost Converter with ZDP^TM,AEC-Q100 Qualified

Description

The MPQ8878-AEC1 is a 36V, monolithic, synchronous buck-boost DC/DC converter. The wide 2.9V to 36V input voltage (V_IN) range makes this device well-suited for multi-purpose automotive and industrial applications. Proprietary Zero-Delay PWM^TM (ZDP^TM) control and the device's fully integrated, four-switch configuration allow the chip to flexibly change the converter topology between buck, boost, and buck-boost modes. This optimizes performance and efficiency with input votlages that are above, below, or equal to the output voltage (V_OUT). It also ensures seamless transitions between the adjacent operational regions.

The MPQ8878-AEC1 can be configured via a standard I²C interface, and UART versions are also available. The parameters can be adjusted by writing settings to the device without any hardware changes required.

The switching frequency (f_SW) can be configured to 200kHz, 400kHz, 470kHz, 2200kHz, or it can be synchronized between 250kHz and 2.2MHz via an external clock signal. In addition, the configurable frequency spread spectrum (FSS) function can dither the f_SW periodically for improved EMI performance.

Robust fault protections include input under-voltage lockout (UVLO), input over-voltage protection (OVP), cycle-by-cycle peak current limiting, output OVP, output short-circuit protection (SCP), and thermal shutdown. The built-in power good (PG) function can indicate whether V_OUT is regulated properly.

The MPQ8878-AEC1 is available in a thermally enhanced TQFN-23 (4mmx5mm) package, and is available in AEC-Q100 Grade 1.

Features & Benefits

Designed for Automotive Applications:
- 2.9V to 36V Wide Input Voltage (V_IN) Range
- Load Dump Up to 40V
- Cold Crank Down to 2.9V
- Single-Channel, Four-Switch, Synchronous Buck-Boost Configuration
- Proprietary Zero-Delay PWM^TM (ZDP^TM) Control for Seamless Transitions
- Up to 10A of Continuous Output Current (I_OUT) in Buck Mode
- Available in AEC-Q100 Grade 1
Extends Vehicle Battery Life:
- 1μA Shutdown Current
- 50μA Quiescent Current (I_Q)
Easy-to-Optimize Efficiency and EMI Performance:
- Configurable 200kHz, 400kHz, 470kHz, or 2200kHz Switching Frequency (f_SW)
- Synchronizable f_SW
- Switching Frequency Spread Spectrum (FSS)
Reduces Board Size and BOM:
- Integrated Compensation Network
- Fixed Output Voltage (V_OUT) Options
Rich Protections and Diagnostics:
- Configurable Input Under-Voltage Lockout (UVLO)
- Cycle-by-Cycle Current Limiting
- Over-Current Protection (OCP)
- Output Over-Voltage Protection (OVP)
- Input Over-Voltage Protection (OVP)
- Output Under-Voltage Protection (UVP)
- Over-Temperature Shutdown
- Power Good (PG) Indication
Application Flexibility with I²C/UART Interface:
- 1Mb/s I²C Interface with Packet Error Checking (PEC)
- Configurable Parameters:
  - Converter On/Off
  - 1V to 24V V_OUT Range
  - f_SW
  - Switching Slew Rate
  - FSS Setting
  - Compensation Network
  - Soft-Start Time (t_SS)
  - Dynamic V_OUT Adjustment with Slew Rate Control
  - Converter Mode Transition Threshold
  - Asynchronous Advanced Modluation (AAM) Mode or Forced Continuous Conduction Mode (FCCM)
  - Protection Threshold
  - Fault Behaviors
  - Power Good (PG) Threshold
Additional Features:
- One-Time Programmable (OTP) for Default Parameter Settings
- Available in a Mesh-Connect^TM Flip-Chip TQFN-23 (4mmx5mm) Package
- Available in Thermal-Enhanced THQFN to Facilitate Top-Side Cooling
- Available with Wettable Flanks
Functional Safety System Design Capability:
- MPSafe^TM-Compatible – Functional Safety Supporting Document Available

Active Part Numbers:

MPQ8878GVTE-xxxx-AEC1-Z MPQ8878GVTE-xxxx-AEC1-P MPQ8878GVTE-0000-AEC1-Z MPQ8878GVTE-0000-AEC1-P MPQ8878GVTHE-xxxx-AEC1-Z MPQ8878GVTHE-xxxx-AEC1-P MPQ8878GVTHE-0000-AEC1-Z MPQ8878GVTHE-0000-AEC1-P

Meaning of P & Z