MEZS7-1S-4SPDPowerbank

MEZS7-1S-4SPDPowerbank

Bidirectional PD Power Bank Solution with Fully Integrated Buck-Boost Charger for 1-Cell to 4-Cell in Series Battery Packs

ALTERNATIVE PART

Datasheet

MEZS7-1S-4SPDPowerbank continues to be in production for existing customers. Please consider this alternative for new designs:

MEZS7-PDPowerBank-MP2651

Fully Integrated, Buck-Boost Charger Solution Module for 2-Cell to 4-Cell Series Bidirectional USB PD Power Banks

Features & Benefits

Buck-Boost Charger for 2-Cell to 4-Cell Series Battery Packs
4V to 22V Operating Input Voltage (V_IN)
Up to 26V Sustainable Voltage, or Up to 28V with an External MOSFET
Smooth Transitions between Buck and Boost Modes
Configurable Maximum Input Current (I_IN) Limit and Minimum V_IN Limit
Up to 6A of Configurable Charge Current
Configurable Battery-Full Voltage Up to 4.67V/Cell with 0.5% Accuracy
Output Compatible with USB PD 3.0 Source Mode
Configurable 4V to 21V IN Output Voltage in Source Mode (V_{IN_SRC}) with 20mV/Step
Up to 6A of Output Current (I_OUT) with 50mA/Step
500kHz to 1.2MHz Configurable Switching Frequency (f_SW)
I²C or SMBus Host Control Interface to Support Flexible Parameter Setting
Input Power Source Status Indicator
Integrated 10-Bit Analog-to-Digital Converter (ADC) for Monitoring in Both Charge Mode and Source Mode
Analog Output Pin Monitors Charge Current
Input and Battery Over-Voltage Protection (OVP)
Output Short-Circuit Protection (SCP) in Source Mode
Battery Missing Detection
NTC Pin Floating Detection
Integrated N-Channel MOSFET Driver for Input Power Pass-Through or OVP
Configurable JEITA for Battery Temperature Protection
Thermal Regulation and Thermal Shutdown

… and many more!

Parameters Description

Series Cells
1, 2, 3, 4
Vbatt (min) (V)
4.67
Vbatt (max) (V)
18.68
Icharge (max) (A)
6
Operating Vin (min) (V)
4
Operating Vin (max) (V)
22
Topology
Buck (Charge) / Boost (Discharge)
Device Used
MP2651

The MEZS7-1S-4SPDPowerBank is a solution module for PD applications with the MP2651 and CCG3PA, supporting PD3.0 and BC1.2 protocols. The MP2651 is a buck-boost charger designed for battery packs with 1 cell to 4 cells in series. The device supplies a wide 3V to 21V voltage range at the IN pin in source mode. It is compliant with USB PD specifications. The CCG3PA is a Cypress PD controller that handles the PD protocol.

The MEZS7-1S-4SPDPowerBank contains a DRP USB Type-C port. When an adapter is inserted, the port acts as a UFP to charge the battery with a maximum 5A charge current. When a load is inserted, the port acts as a DFP to power the USB from the battery.

Features & Benefits

Buck-Boost Charger for 1-Cell to 4-Cell Series Battery Packs
4V to 22V Input Voltage (V_IN)
Up to 26V Sustainable Voltage (Up to 28V with External MOSFET)
High-Efficiency, 6A, 600kHz Charger
Supports USB 2.0, USB 3.0, USB 3.1, USB 3.2, Type-C, and USB PD 3.0
3V to 21V Source Mode Output Compatible with USB PD 3.0 from the Battery
Minimum V_IN Loop for Maximum Adapter Power Tracking
Up to 12.75A Battery Discharge Current
I²C Port for Flexible System Parameter Setting and Status Reporting
High Accuracy:
- ±0.5% Charge Voltage Regulation
- ±5% Charge Current Regulation
- ±3% Output Regulation in Boost Mode
Safety:
- Configurable JEITA for Battery Temperature Protection
- Battery Charging Safety Timer
- Thermal Regulation and Thermal Shutdown
- Input/System/Battery Over-Voltage Protection (OVP)
- Charge Mode System Short-Circuit Protection (SCP)
- Source Mode Output SCP
- Supports Temperature Protection on the Battery Side
- Charge Operation Indication

Active Part Numbers:

MEZS7-1S-4SPDPowerbank

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The MP2651 is a buck-boost charger IC designed for battery packs with 1 cell to 4 cells in series. The device can accept a wide 4V to 22V input voltage (V_IN) range to charge the battery. The buck-boost topology allows the battery voltage to be above or below V_IN.

When the input is present, the MP2651 operates in charge mode. It measures the battery voltage and charges the battery with four phases: constant current trickle charge, constant current pre-charge, constant current fast charge, and constant voltage charge. Other features include charge termination and auto-recharge.

The MP2651 also integrates the input current (I_IN) limit and V_IN limit to avoid overloading the input power source. This is compliant with the USB and PD specifications.

The MP2651 can also supply a wide voltage range (4V to 21V) at the input when source mode is enabled. The device also has an IN output current limit in source mode (I_{IN_SRC}) with high resolution in source mode.

The I²C/SMBus interface can configure the charge and discharge parameters, including the I_IN limit, V_IN limit, charge current, battery-full regulation voltage, IN output voltage in source mode (V_{IN_SRC}), and I_{IN_SRC}. The MP2651 can also use the registers to provide information on statuses and faults.

To guarantee safe operation, the device limits the die temperature to a configurable threshold. Other safety features include input over-voltage protection (OVP), battery OVP, thermal shutdown, and a configurable timer to prevent prolonged charging of a dead battery.

The MP2651 is available in a TQFN-30 (4mmx5mm) package.