ZSPM4523 High-Efficiency Solar PV MPPT Regulator for Super Capacitor Systems Datasheet Brief Description Features The ZSPM4523 is a DC/DC synchronous switching Temperature-independent MPPT regulation super capacitor charger with fully integrated power V reverse-current blocking OUT switches, internal compensation, and full fault pro- Programmable temperature-compensated tection. It uses a temperature-independent photo- termination voltage: 2.48 to 2.74 V 1% voltaic maximum power point tracking (MPPT) calcu- User programmable maximum charge current: lator to optimize power output from the source during 50mA to 1500mA Full-Charge Mode. Its 1MHz switching frequency Input supply under-voltage lockout allows using small filter components, which results in Full protection for V over-voltage OUT smaller board space and reduced bill-of-material 2 costs. I C program interface with EEPROM registers Charge status indication In Full-Charge Mode, the duty cycle is controlled by the MPPT function. Once the termination voltage is reached, the regulator operates in Constant Voltage Related IDT Smart Power Products Mode. When the regulator is disabled (the EN pin is ZSPM4521 High-Efficiency Charger for Li-Ion low), the device draws 10A (typical) quiescent Batteries with MPPT Regulator current from V . OUT ZSPM4551 High-Efficiency Charger for Li-Ion The ZSPM4523 integrates a wide range of protec- Batteries tion circuitry, including input supply under-voltage ZSPM4121 Ultra-low Power Under-Voltage Switch lockout, output over-voltage protection, current ZSPM4141 Ultra-Low-Power Linear Regulator limiting, and thermal shutdown. The ZSPM4523 includes supervisory reporting via Available Support the NFLT (Inverted Fault) open-drain output to Evaluation Kit interface other components in the system. Device Support Documentation programming is achieved by the IC* interface through the SCL and SDA pins. Physical Characteristics Benefits Wide input voltage range: 3.2V to 7.2V Junction operating temperature -40C to 125C Up to 1.5A continuous output current Packaged in a 16-pin PQFN (4mm x 4mm) High efficiency up to 92% at typical load ZSPM4523 Application Circuit Photovoltaic Cells VIN C IN ZSPM4523 GND C Vdd L R OUT SENSE Super Cap VDD SW COUT SCL VSENSE VDD R PULLUP (optional) SDA VOUT VDD R PULLUP (optional) EN NFLT PGND 2 * I C is a trademark of NXP. 2016 Integrated Device Technology, Inc. 1 January 29, 2016 Backgate Blocking ZSPM4523 High-Efficiency Solar PV MPPT Regulator for Super Capacitor Systems Datasheet ZSPM4523 Block Diagram Photovoltaic Cells EN VIN NFLT VIN VIN SCL IC* Interface SDA MONITOR & ~5V 450mA CONTROL Over- Voltage VOUT Protection Oscillator Ramp Generator VOUT Current VOUT Control VIN S Vref Gate Drive SW Gate Drive L OUT RSENSE Control Comparator Gate Error Amp Drive PGND Compensation VIN Network Typical Applications MPP & Current VDD Regulator Control VSENSE Portable solar chargers VOUT Off-grid systems VDD GND CVDD Wireless sensor networks 2 * I C is a trademark of NXP. Ordering Information Ordering Code Description Package ZSPM4523AA1W ZSPM4523 High-Efficiency Regulator for Super Cap Systems 16-pin PQFN / 7 Reel (1000 parts) ZSPM4523AA1R ZSPM4523 High-Efficiency Regulator for Super Cap Systems 16-pin PQFN / 13 Reel (3300 parts) ZSPM4523KIT ZSPM4523 Evaluation Kit 2016 Integrated Device Technology, Inc. 2 January 29, 2016 C IN COUT Super Cap