GW Instek PPH-1503D - 45W High Precision Dual Channel Output DC Power Supply

GW Instek introduces new PPH-1503D programmable high precision dual-channel DC power supply. PPH-1503D’s CH1 provides dual operational ranges for voltage and current and its total power output is 45W. The dual operational ranges are 0 to 15V/0 to 3A or 0 to 9V/0 to 5A. CH2 provides 0 to 12V/0 to 1.5A with 18W power output.

PPH-1503D’s high precision measurement capability achieves the maximum resolution of 1mV/0.1uA and the smallest pulse current width of 33us that satisfy customers’ measurement application requirements of high resolution and pulse current. Fast load current variation will result in voltage sag for general power supplies that will have an impact on DUT’s internal circuit operation. PPH-1503D is equipped with the excellent transient recovery time, which can, in less than 40us, recover the output voltage to within 100mV of the previous voltage output when the current level changes from 10% to 100% of the full scale. Furthermore, conventional power supplies do not have sufficient response speed to promptly respond to set voltage value once the set voltage is changed. PPH-1503D has a rise time of 0.2ms and a fall time of 0.3ms, which are 100 times faster than that of conventional power supplies. Therefore, PPH-1503D can provide DUT with a stable output voltage even when DUT is operating under large transient current output. The internal high-speed sampling circuit design of PPH-1503D, with the sample rate of 64K, can conduct pulse current measurement without using a current probe and oscilloscope. The current read back accuracy is 0.2%+1uA (equals to 11uA) at 5mA range, and the read back resolution is 0.1uA that allow DUT to be measured with a high accuracy level. Unlike battery, general power supplies, which do not have the characteristics of fast transient recovery time, can not maintain a stable power supply for cellular phone, wireless device, and wearable device which produce large transient pulse current load for hundreds of μs to dozens of ms when in use. PPH-1503D, different from general power supplies, has the characteristics of fast transient recovery time. While simulating battery to output pulse current, PPH-1503D can quickly compensate the voltage drop caused by pulse current. CH1 has the built-in battery simulation function, which can define output impedance settings so as to accurately simulate battery’s impedance characteristics during battery discharge. Fast transient recovery time and built-in battery simulation function together facilitate PPH-1503D to accurately simulate battery’s real behavior pattern so as to conduct product tests.

PPH-1503D is not only suitable for simulating battery, charger and supplying power to DUT, but also ideal for simulating an electronic load to conduct discharge tests with its sink current capability. The sink current function allows PPH-1503D to simulate a voltage source with the sink current capability. The maximum sink current of PPH-1503D’s CH1 is 3.5A and for CH2 is 2A. Long integration current measurement can be utilized to conduct average current measurement for periodical pulse current in a long period of time that is applied to analyze power consumption for a period of time. One of the applications is to measure the average power consumption of a cellular phone in use so as to conduct the internal RF module parameter analysis. The maximum current measurement range of CH1 is 5A and for CH2 is 1.5A. The built-in sequence function of CH1 provides users with 1000 steps to edit sequential outputs, including voltage, current and execution time. The built-in DVM function of CH2 has a voltage range from 0 to +20VDC that saves users the cost of purchasing an additional voltage meter.

PPH-1503D provides OTP function and shows heat sink temperature on the upper right corner of the display screen. Other than that, features such as five sets of system setting values for the SAVE/RECALL function, 10 sets of Power On Setup Settings, Key-Lock function to prevent unauthorized inputs, temperature-controlled fan to reduce noise, hardcopy to save screen information, and external relay control device together augment PPH-1503D’s usability. PPH-1503D supports test requirements of Profile1, Profile2 and Profile3 from USB Power Delivery (PD) constructed by USB-IF association. 

Sink current function

When connecting with an electric potential circuit and the output voltage of the tested electric potential circuit is greater than that of PPH-1503D by approximately 0.3V to 2.5V, PPH-1503D will automatically convert its power supply role to the sink current role acting as a load of voltage source. At this time, the voltage setting of PPH-1503D can be regarded as the CV setting of an electronic load. A single PPH-1503D can be used to charge battery and to simulate battery’s load to consume power without extra instruments. It is ideal for tests on battery and portable charger.

Connection diagram for PPH-1503D and an electrical potential circuit

The following diagrams show voltage setting values and allowable sink current for CH1 and CH2 of PPH-1503D:

Pulse Current Measurements

While measuring pulse current, users can set trigger levels to avoid measuring noise. Trigger level setting range is from 0.005A to 5A. Signals, noises, transients below trigger levels will be ignored during measurement processes. The appropriate measurement integration time can be set by system or manual setting from 33.3us to 833ms. Pulse current measurements facilitate designers to decide the required power supply allocation for DUT at the preliminary stage. Applications include batteries for portable RF module, blue tooth and cellular phone. 

Pulse Current Measurement

Long Integration Current Measurement

Long integration current measurement is to measure the average current of periodical pulse current in a long period of time. The measured pulse must be a complete periodical waveform or multiple complete periodical waveforms. The total measurement time is up to 60 seconds. Measurements can be taken from pulse’s positive edge trigger or negative edge trigger. Users can also take measurements from the beginning of power output. Long integration current measurement is to analyze power consumption for a period of time. For instance, users can measure the average power consumption of a cellular phone in use to analyze its internal RF module parameters. 

Long Integration Current Measurement

Sequence Function

For the practical usage, PPH-1503D can be programmed to output a sequential voltage variation according to the requirements. There are 1000 steps for users to edit output voltage, current and execution time. Programmable execution time range is from 0.001 second to 3600 seconds and the resolution is 0.001 second. Programmable recurring frequency is from 1 to 9999 or it can be set to infinite execution (set recurring frequency to 0). 

Functional Setting Page for Sequence Function

Battery Simulation Function

PPH-1503D’s battery simulation function is equivalent to a variable resistance circuit internally connected in series to simulate battery’s output impedance. The function can also be regarded as a power supply with a variable internal resistor. The variable internal resistance range is from 0.000Ω to 1.000Ω and the resolution is 1mΩ. PPH-1503D can be utilized as a battery or an ideal voltage source Vset to be connected with variable resistance Res in series. The following diagram shows battery simulation to produce output voltage Vout.  

Battery Equivalent Model

Built-in Digital Voltmeter

PPH-1503D’s built-inDigital Volt-Meter (DVM)has adedicated input terminallocated on the front panel. With the DC voltage measurement range from 0 to +20VDC, PPH-1503 not only provides power supplyfor DUT but also measures the voltage on DUT. The read back accuracy reaches ±(0.05%+3mV) and read back resolution is 1mV. Users are able to save the cost of purchasingan extra voltage meter.Furthermore, DVM measurements can be remotely controlled by SCPI commands via a PC. 

DVM Input Terminal

Mobile communications applications

The battery simulationfunction and pulse current measurement function of PPH-1503D are ideal for mobile communications measurements, including tests of cellular phone, wireless, blue tooth peripheraland wearabledevice. Monitoring pulse current of cellular phone in use is a very important test, which can be done by using one channel to simulate battery and the other channel to simulate USB charging device. By so doing, charging and measuring current changes can be achieved at the same time.

External Relay Control 

PPH-1503Dprovides four control modes, including Limit, Trip, LimitRelay and Trip Relay. Limit mode is to maintainCC output when output current reaches CC value. Trip mode is to turn off power output when output current reaches CC value. When output current reaches CC value, Limit Relay will maintain CC output and execute simultaneous Relay operation to control externaldevice. When output current reaches CC value,Trip Relay mode will turn off power output and execute simultaneous Relay operation to control externaldevice.

The External Control Diagram for using a PPH-1503D's + 5Vdc Power

• Dual Channel DC Power Output
• Ch1: 45W (0~15V/0~3A or 0~9V/0~5A) / Ch2: 18W (0~12V/0~1.5A)
• 3.5 inch TFT LCD Display
• Built-in DVM Measurement Function
• High Measurement Resolution (1mV/0.1μA for 5mA Range)
• Current Sink Function (Maximum : 3.5A)
• Pulse Current Measurement
• Long Integration Current Measurement
• Sequence Function (Sequential power output)
• Built-in Battery Simulation Function
• OVP, OCP, OTP & Temperature Display for Heat Sink
• Support USB (Device& Host)/GPIB/LAN
• 5 Groups of Save/Recall Setting
• External RELAY Control

Channel 1

Channel 2

General

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