ZSPM4523
High-Efficiency Solar PV MPPT Regulator for Super Cap Systems
Brief Description
The ZSPM4523 is a DC/DC synchronous switching
super capacitor charger with fully integrated power
switches, internal compensation, and full fault pro-
tection. It uses a temperature-independent photo-
voltaic maximum power point tracking (MPPT) calcu-
lator to optimize power output from the source during
Full-Charge Mode. Its 1MHz switching frequency
allows using small filter components, which results in
smaller board space and reduced bill-of-material
costs.
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
Mode. When the regulator is disabled (the EN pin is
low), the device draws 10µA (typical) quiescent
current from V
OUT
.
The ZSPM4523 integrates a wide range of protec-
tion circuitry, including input supply under-voltage
lockout, output over-voltage protection, current
limiting, and thermal shutdown.
The ZSPM4523 includes supervisory reporting via
the NFLT (Inverted Fault) open-drain output to
interface other components in the system. Device
programming is achieved by the I²C™* interface
through the SCL and SDA pins.
Features
Temperature-independent MPPT regulation
V
OUT
reverse-current blocking
Programmable temperature-compensated
termination voltage: 2.48 to 2.74 V ± 1%
User programmable maximum charge current:
50mA to 1500mA
Input supply under-voltage lockout
Full protection for V
OUT
over-voltage
2
I C™ program interface with EEPROM registers
Charge status indication
Related ZMDI Smart Power Products
ZSPM4521 High-Efficiency Charger for Li-Ion
Batteries with MPPT Regulator
ZSPM4551 High-Efficiency Charger for Li-Ion
Batteries
ZSPM4121 Ultra-low Power Under-Voltage Switch
ZSPM4141 Ultra-Low-Power Linear Regulator
Available Support
Evaluation Kit
Support Documentation
Physical Characteristics
Benefits
Up to 1.5A continuous output current
High efficiency – up to 92% at typical load
Wide input voltage range: 3.2V to 7.2V
Junction operating temperature -40°C to 125°C
Packaged in a 16-pin PQFN (4mm x 4mm)
Photovoltaic Cells
ZSPM4523 Application Circuit
VIN
C
IN
ZSPM4523
GND
L
OUT
R
SENSE
C
Vdd
VDD
SCL
R
PULLUP
(optional)
Super Cap
C
OUT
SW
VSENSE
VOUT
VDD
R
PULLUP
VDD
SDA
EN
PGND
(optional)
NFLT
* I
2
C™ is a trademark of NXP.
For more information, contact ZMDI via
analog@zmdi.com.
© 2013 Zentrum Mikroelektronik Dresden AG — Rev.1.00 — February 14, 2013.
All rights reserved. The material contained herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
ZSPM4523
High-Efficiency Solar PV MPPT Regulator for Super Cap Systems
ZSPM4523 Block Diagram
NFLT
EN
VIN
VIN
VIN
SCL
SDA
C
IN
Photovoltaic
Cells
I²C™*
Interface
MONITOR
&
CONTROL
Over-
Voltage
Protection
~5V @ 450mA
VOUT
Oscillator
Ramp
Generator
VOUT Current
Control
VOUT
VIN
Vref
Gate Drive
Control
Backgate
Blocking
Gate
Drive
SW
L
OUT
R
SENSE
Comparator
Error Amp
Compensation
Network
Gate
Drive
VIN
PGND
Typical Applications
VDD Regulator
Portable solar chargers
Off-grid systems
Wireless sensor networks
MPP & Current
Control
VSENSE
VOUT
VDD
C
VDD
GND
* I
2
C™ is a trademark of NXP.
Ordering Information
Ordering Code
ZSPM4523AA1W
ZSPM4523AA1R
ZSPM4523KIT
Description
ZSPM4523 High-Efficiency Regulator for Super Cap Systems
ZSPM4523 High-Efficiency Regulator for Super Cap Systems
ZSPM4523 Evaluation Kit
Package
16-pin PQFN / 7” Reel (1000 parts)
16-pin PQFN / 13” Reel (3300 parts)
Sales and Further Information
Zentrum Mikroelektronik
Dresden AG
Grenzstrasse 28
01109 Dresden
Germany
ZMD America, Inc.
1525 McCarthy Blvd., #212
Milpitas, CA 95035-7453
USA
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG, Japan Office
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
ZMD Far East, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Analog@zmdi.com
Zentrum Mikroelektronik
Dresden AG, Korea Office
U-space 1 Building
11th Floor, Unit JA-1102
670 Sampyeong-dong
Bundang-gu, Seongnam-si
Gyeonggi-do, 463-400
Korea
Phone +82.31.950.7679
Fax
+82.504.841.3026
Phone +49.351.8822.7.776
Fax +49.351.8822.8.7776
Phone +855.275.9634 (USA) Phone +81.3.6895.7410
Fax
+81.3.6895.7301
Phone +408.883.6310
Fax
+408.883.6358
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG
(ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under
no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever
arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or
any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing,
performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise.
© 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 — February 14, 2013
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
Super Cap
C
OUT
Embedded System
京公网安备 11010802033920号
EEWORLD
