MPQ8645P

MPQ8645P

NOT RECOMMENDED FOR NEW DESIGNS

16V, 30A, Scalable, Digital, Synchronous Step-Down Converter with PMBus^TM

ALTERNATIVE PART

Datasheet EN

MPQ8645P continues to be in production for existing customers. Please consider this alternative for new designs:

MPQ8655GVT

16V, 30A, Scalable, Digital, Synchronous Step-Down Converter with Digital Interface

Features & Benefits

Digital Interface 1.3 Compliant
Scalable Multi-Phase Operation
3.1V to 16V Input Voltage (V_IN) with External 3.3V V_CC Bias
4V to 16V V_IN with Internal Bias
Up to 30A of Continuous Output Current (I_OUT) per Phase
Low On Resistance (R_DS(ON)) Integrated Power MOSFETs
Lossless and Accurate On-Die Current Sensing
Adaptive Multi-Phase Constant-On-Time (MCOT) for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitors
0.5% Reference Voltage (V_REF) Across 0°C to 70°C Junction Temperature (T_J) Range
Output Voltage (V_OUT) True Remote Sense
V_OUT, I_OUT, V_IN, and T_J Reporting
V_OUT Adjustable from 0.4V to 0.9 x V_IN, Up to 5.5V Max
Built-In Memory to Store Custom Configurations
Configurable via Digital Interface:
- V_OUT
- I_OUT Limit
- Selectable Pulse-Skip Mode (PSM) or Forced Continuous Conduction Mode (FCCM)
- Soft-Start Time (t_SS)
- Selectable 400kHz, 600kHz, 800kHz, or 1000kHz Switching Frequency (f_SW)
- Over-Current Protection (OCP), Over-Voltage Protection (OVP), and Over-Temperature Protection (OTP) with Options for Hiccup or Latch-Off Mode
- Ramp Compensation
Available in a TQFN-25 (4mmx5mm) Package

… and many more!

Description

The MPQ8645P is a fully integrated, PMBus^TM-compatible, high-frequency, synchronous buck converter. The MPQ8645P offers a very compact solution that achieves up to 30A of output current per-phase with excellent load and line regulation over a wide input supply range. The MPQ8645P operates at high efficiency over a wide output current load range.

The PMBus^TM interface provides converter configurations and key parameter monitoring.

The MPQ8645P adopts MPS’s proprietary multi-phase constant-on-time (MCOT) control, which provides fast transient response and eases loop stabilization. The MCOT scheme also allows multiple MPQ8645P devices to be connected in parallel with excellent current sharing and phase interleaving for high-current applications.

Fully integrated protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MPQ8645P requires a minimal number of readily available, standard, external components and is available in a TQFN-25 (4mmx5mm) package.

Features & Benefits

PMBus^TM 1.3 Compliant
Scalable Multi-Phase Operation
3.1V to 16V with External 3.3V VCC Bias 4V to 16V with Internal Bias or External 3.3V VCC Bias
30A Continuous Output Current Per Phase
Low R_DS(ON) Integrated Power MOSFETs
Lossless and Accurate On-Die Current Sensing
Adaptive COT for Ultrafast Transient Response
Stable with Zero-ESR Output Capacitors
0.5% Reference Voltage Over 0°C to +70°C Junction Temperature Range
Output Voltage True Remote Sense
Output Adjustable from 0.4V to 0.9 x V_IN up to 5.5V Max
Output Voltage/Current, Input Voltage, and Junction Temperature Reporting
Built-In MTP to Store Custom Configurations
Programmable via PMBus^TM
- Output Voltage
- Output Current Limit
- Selection of Pulse-Skip or Forced-CCM Operation
- Soft-Start Time
- Selection of Switching Frequency from 400kHz, 600kHz, 800kHz, or 1000kHz
- Selection of Hiccup or Latch-Off for OCP, OVP, and OTP
- Ramp Compensation
Available in a TQFN-25 (4mmx5mm) Package

Active Part Numbers:

MPQ8645PGVT-xxxx-P MPQ8645PGVT-xxxx-Z MPQ8645PGVT-0000-P MPQ8645PGVT-0000-Z

Meaning of P & Z

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Hardware & Software Requirements: