MPQ8837-AEC1

MPQ8837-AEC1

36V, 8A, 4-Switch, Synchronous Buck-Boost Converter with CC/CV Operation and I²C, AEC-Q100 Qualified

概要

The MPQ8837-AEC1 is a 36V, synchronous, 4-switch, buck-boost converter with integrated MOSFETs and a fixed switching frequency (f_SW). The wide 2.8V to 36V input voltage (V_IN) range makes the device well-suited for multi-purpose automotive and industrial applications. The device can deliver up to 8A output current (I_OUT) or 60W of peak output power (P_OUT) at certain V_IN supply ranges with excellent efficiency.

The I²C interface and one-time programmable (OTP) memory provide flexibility for configurable parameters.

f_SW can be configured as 280kHz, 420kHz, 600kHz, 1.2MHz, and 2.1MHz. The configurable frequency spread spectrum (FSS) function can dither f_SW periodically for improved EMI performance.

Fault condition protections include constant-current limit, input and output over-voltage protection (OVP), and thermal shutdown (TSD).

The MPQ8837-AEC1 requires a minimal number of readily available, standard components, and is available in a small, thermal-enhanced TQFN-18 (3mmx4mm) package with wettable flanks.

機能と利点

Designed to Handle Automotive Transients:
- Wide 2.8V to 36V Input Voltage (V_IN) Range
- 1V to 26V Output Voltage (V_OUT) Range
- Up to 8A Continuous Switch Current
- Up to 60W Peak Output Power (P_OUT)
- Single-Channel, 4-Switch, Synchronous Buck-Boost Configuration:
  - Internal Buck Low-Side Power MOSFET (LS-FET)
  - Internal Buck Low-Side Synchronous Rectifier
  - Internal Boost LS-FET
  - Internal Boost LS-FET
Extends Vehicle Battery Life:
- 1μA Shutdown Current
- 280μA Quiescent Current (I_Q)
Easy to Optimize Efficiency and EMI Performance:
- Configurable 280kHz, 420kHz, 600kHz, 1.2MHz, or 2.1MHz Switching Frequency (f_SW)
- Switching Frequency Spread Spectrum (FSS)
- Fixed f_SW with Current Mode Control

Rich Protections and Diagnostics:

Input Under-Voltage Lockout (UVLO)
Cycle-by-Cycle Current Limiting
Constant Current-Limit Protection
Over-Voltage Protection (OVP)
Over-Temperature (OT) Shutdown

Additional Features:

I²C-Configurable Reference Voltage (V_REF) Range: 0V to 2.047V, with 0.5mV Resolution
Integrated 5V/60mA Low-Dropout (LDO) Regulator to Supply an External MCU
I²C-Configurable ALT Pin for Fault/Event and Power Good (PG) Indication
HW-Configurable I²C Target Address
Line Drop Compensation
External Clock Synchronization
Selectable Automatic Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode and Forced PWM Mode
One-Time Programmable (OTP) Memory for Default Parameter Setting
MeshConnect^TM Flip-Chip Package
Available in a TQFN-18 (3mmx4mm) Package with Wettable Flanks
Available in AEC-Q100 Grade