Maxim Integrated Complete System Power Protection ICs
Highly Integrated Solution Enables Small and Robust Design
Maxim Integrated System Power Protection ICs prevent field failures and unexpected downtime by mitigating the harmful effects of reverse voltage, hot swap, overvoltage, overcurrent, and over temperature fault conditions frequently encountered in industrial, medical, e-mobility, and other environments.
Maxim’s complete system protection ICs integrate back-to-back MOSFETs for robust protection with nanosecond response times. Their robust, compact solutions feature:
- Inrush current limit
- e-Fuse/overload limit
- Reverse voltage
- Power limit
- Thermally controlled current foldback
- Current monitoring
MAX17613A Current Limiter
Industry's smallest and most robust integrated system protection solution
The Maxim Integrated MAX17613A series of adjustable overvoltage and overcurrent protection devices are ideal to protect systems against positive and negative input voltage faults up to +60V and -65V, and feature low 130m Ω (typ) RON FETs.
The adjustable input overvoltage protection range is 5.5V to 60V and the adjustable input undervoltage protection range is 4.5V to 59V. The input overvoltage-lockout (OVLO) and undervoltage-lockout (UVLO) thresholds are set using external resistors. Additionally, the devices offer an internal input undervoltage threshold at 4.2V (typ).
The devices feature programmable current-limit protection up to 3A; hence, controlling the inrush current at startup while charging high capacitance at the output. The current-limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the device prevents further increases in current by modulating the FET resistance. The devices can be programmed to behave in three different ways under current-limit condition: autoretry, continuous, or latchoff modes. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device and can be read by an ADC.
MAX17613A and MAX17613C block current flowing in the reverse direction (i.e., from OUT to IN) whereas MAX17613B allows current flow in the reverse direction. The devices feature thermal shutdown protection against excessive power dissipation.
The devices are available in a small, 20-pin (4mm x 4mm) TQFN-EP package and operate over the -40°C to +125°C extended temperature range.
MAX17613 Block Diagram
The MAX17613AEVKIT# evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the MAX17613A 4.5V to 60V, 3A, overvoltage (OV), undervoltage (UV) protector with forward current limit and reverse current block in a 20-pin TQFN-EP package.
The EV kit can be configured to demonstrate adjustable overvoltage, undervoltage, three current-limit types (Autoretry, Continuous, and Latchoff) with different current limit thresholds (from 0.15A to 3A).
- 4.5V to 40V Operating Voltage Range (Remove the TVS Diode to Extend the Operating Voltage Range up to 60V)
- Features a 40V TVS Diode (D1) across the Input and Schottky Diode across the Output Terminals
- Evaluates Undervoltage-Lockout (UVLO), Overvoltage-Lockout (OVLO), Three Current-Limit Types, and Current-Limit Threshold
- UVLO Programmed to 4.5V
- OVLO Programmed to 36V
- Jumper-Configurable Current-Limit
- Jumper-Configurable Current-Limit Type
- Programmable Startup Blanking Time
- Features Fault Indication Signals (Activ-Low UVOV, Active-Low FLAG)
- Proven PCB Layout
- Fully Assembled and Tested
- Condition Monitoring
- Factory Sensors
- Industrial Applications such as PLC, Control Network Modules, Battery-Operated Modules
- Process Instrumentation
- Sensor Systems
- Weighing and Batching Systems