IT8700P+ High Speed Multi-channel DC Electronic Load

IT8700P+ series high-speed multi-channel DC electronic load is an upgraded version of the original IT8700P series with higher speed and higher precision. Its modules support master-slave paralleling connection for power extension. It's compatible with IT8700P mainframe, the new modules and old modules can work together. The IT8700P+ modules have faster dynamic response and the current rising and falling slope of a single module can reach 12A/μs. In addition, the low internal resistance makes it suitable for low-voltage loading test. Faster loop speed can accurately control current without overshoot which improves test efficiency. Furthermore, it has three current ranges for higher accuracy and lower ripple. The voltage and current measurement speed of this series has been upgraded to 250kHz. It has built-in LAN, USB and RS232 interfaces, and supports SCPI protocol. Therefore, IT8700P+ is good for system integration and is suitable for R&D and production line testing of super capacitors, fuel cells, lithium ion batteries, high-speed AC-DC and DC-DC power supplies such as computer power supplies and communication power supplies.

Product Features

♦ Three-stage current range, higher accuracy and lower ripple

♦ Supports master-slave parallel connection of 16-channel modules, flexibly extends power

♦ Faster dynamic response, the current rising and falling slope of a single module can reach 12A/μs

♦ Stable operation down to zero volts, suitable for low-voltage capacitors, solar cells, fuel cells, and other low-voltage high current power supplies

♦ Faster loop speed, precise control of current without overshoot

♦ The voltage and current measurement speed is upgraded to 250kHz, good for system integration

♦ Comprehensive protection functions: OVP/OCP/OPP/OTP, Sense protection

♦ Compatible with IT8700P mainframe, old and new modules can be matched

♦ Short-circuit peak current measurement function

♦ Available front/rear terminals*1

♦ 8 operating modes: CC/ CV/ CR/ CW/ CV+CC/ CR+CC/ CW+CC/ CV+CR (CR-LED)

♦ Automatic test function to tell whether the test results exceed the set specifications

♦ Built-in LAN, USB, RS232 interfaces

♦ CV loop speed is adjustable to match different DUTs

♦ Multi channel synchronous control

*1 Current is no more than 15A if connecting with front terminals

Functions and Advantages

Flexible modules combination

The IT8700P+ series is designed with removable modules, so that you can choose different modules according to your needs. These modules can work with the original IT8700P series modules too. There are high-performance microprocessor chips in each load module and mainframe. Parallel architecture is adopted to achieve faster testing. The load modules are controlled synchronously by the system, and the power supply with multiple outputs can also be tested synchronously.

Fast dynamic response

Power supplies often have high requirements for instantaneous signals and dynamic response. In order to meet faster and faster testing requirements, IT8700P+ series provides high-speed, programmable dynamic sequence control. The current slew rate can reach 12A/μs per module, much faster than the last generation and most other E-loads in the market. So it can be used for high-speed dynamic test of communication power supply and computer power supply. There are three modes of the dynamic test function, namely continuous mode, pulse mode and toggle mode.

Master-slave parallel connection

The IT8700P+ series supports master-slave parallel connection, 8 units (16 channels) at most can be connected in parallel, and the power can be extended to 4800W. Thanks to the flexible power extension , it can be used to test various DUTs and increase equipment utilization. The current sharing mode makes no sacrifice of the dynamic performance after parallel connection.

3 current ranges, well applied to Energy Star standard test for consumer electronics products

IT8700P+ provides 3 current ranges and higher measurement accuracy for DUTs that require high current accuracy like batteries. No need to build a complex test bench, the low current range of the IT8700P+ can be used for Energy Star standard testing in sleep, idle and standby modes of consumer electronics products. Actually it is suitable for almost all consumer electronics products that require precise current setting and measurement at the μA and mA levels.

Low voltage loading

The parameters can be set under each current range of the IT8700P+ modules. When operating in low and medium ranges, the minimum loading voltage is no more than 0.1V, while in the high current range, the minimum loading voltage at full current is no more than 0.5V. It achieves lower input impedance after parallel connection, which is good for the testing of fuel cells, super capacitors, DC-DC converters and other low-voltage, high-current electronic components.