WD1000P Series Power Module

Product introduction

Product Introduction

WD1000P series DC-DC Power Module is a new generation product developed by W&H-GAMAY. It has high voltage and wide range power input (200-400Vdc), and adjustable output (22-30.8Vdc), the output power is 1000W; Standard all brick package, closed structure; It has the characteristics of High reliability, high efficiency, high power density and low ripple noise. It can be widely used in radar, communication, industrial control,etc.

Main Features
1. Typical Efficiency: 93.5%;
2. Adjustable Output Voltage: - 20%～+ 10%;
3. Input Over and Under Voltage Protection;
4. Output over-voltage, over-current, short circuit and over temperature protection;
5. 4250vdc Isolation and withstand voltage;
6. With current sharing function.

Model Designation

Product Parameter

Name	Parameter		Remark
Product Model	WD1000P-540S28T	WD1000P-300S28T
Rated input voltage（Vdc）	500	300
Input Voltage Range (Vdc)	380-650	200-400
Output Voltage (Vdc)	28
Output Adjustable Range	－20%～+10%
Maximum Output Current（A）	35.7
Typical Value of Ripple and Noise（mV）	100
Efficiency （%）	93.5
Overall Dimension	116.86113.9mm（LWH）
Note：1, Unless otherwise stated, all specifications are measured at the operating temperature of 25℃, rated input, full load output conditions; 2, Above products can provide M file, for other output voltage, please contact us.

1. Input Characteristics

Items		Minimum	Typical Value	Maximum	Unit	Remark
Model	WD1000P-500S28T
Input	Voltage Range	380	500	650	Vdc
	Under Voltage Protection Point	345	355	365	Vdc	Output with half load
	Under Voltage Recovery Point	355	365	375	Vdc	Output with half load
	Over voltage Protection Point	675	685	700	Vdc	Output with half load
	Over voltage Recovery Point	650	665	680	Vdc	Output with half load
Model	WD1000P-300S28T
Input	Voltage Range	200	300	400
	Under Voltage Protection Point	180	185	190
	Under Voltage Recovery Point	190	195	200
	Over voltage Protection Point	410	420	430
	Over voltage Recovery Point	400	405	410
ON/OFF Remote control （Negative Logic）		2.4		18.0	Vdc	High level, without output
ON/OFF Remote control （Negative Logic）		-1		0.8	Vdc	Dangling or low level, normal output
Maximum Input Current				5.5	A	Vin=380Vdc，Po=1000W
No-load Input Current			40	60	mA	Rated input, no load output Tc=25℃
Input Great Instantaneous Current				5	A2s	Vin=500Vdc, External high frequency low ESR 470µF; 22uF electrolytic capacitor , inductance 12uH
Input External Capacitor		22	47	100	µF	High frequency low ESR aluminum electrolytic capacitor, withstand voltage≥800 Vdc; When the operating temperature is lower than -25 ℃, add a 2.2μF/1000Vdc CBB capacitor.

2. Output Characteristics

Items		Minimum	Typical Value	Maximum	Unit	Remark
Output Voltage Set Value		27.72	28.00	28.28	Vdc	Rated input, output with half load
Output Voltage Regulated Accuracy				±1	%	Input full range,output no-load to full load
Voltage Regulation				±0.2	%	Input full range，rated output current
Load Regulation				±0.5	%	Rated input, output full range
Output Adjustable Range		-10		+10	%Vo	Output power≤Maximum output power output current ≤Maximum current output
Current-sharing Bus Voltage		4.75	5.00	5.25	Vdc	Rated input, output full load
Sharing Current			±5	±10	%	Vout=28Vdc，Io=17.85-35.7A
Output Over-current Protection		40.0	42.0	44.0	A	Vin=500Vdc，Vout=28Vdc； Constant current firstly, then hiccups, and self-recovery
Output Over-voltage Protection		33	35	37	Vdc	Vin=500Vdc，Io=35.7A；Locking mode
Auxiliary Power Output Voltage		9	11	13	Vdc	Output 0-20mA
Auxiliary Power Output Current				20	mA
Ripple + Noise (peak-to-peak )			200	350	mV	Test method is shown in Figure (16)
Output External Capacitor		1000	1500		μF	Solid capacitor or polymer capacitor
Output Capacitive Load				3000	μF	Pure resistance mode
Output Voltage Rise Time			20	40	ms	Output voltage from 10% rise to 90%(Rated output capacitance)
Remote Boot Output Voltage Rise Time			20	40	ms	The input is powered on first, then turn ON/OFF, the output voltage from 10% rise to 90%(Rated output capacitance).
Turn on Delay				1500	ms	The input voltage rises to the undervoltage restore Point until the output voltage rises to 10%.
Remote Startup Delay			600	1000	ms	Input Power-on first, and then turn ON/OF until the output voltage rises to 10%.
Dynamic Response to Overshoot Amplitude			840	1400	mV	25%-50%-25%，50%-75%-50% load step change，di/dt= 2.5A/µs, output external 1000μF solid-state capacitor or high-molecular polymer capacitor.
Dynamic Response Recovery Time			500	1000	uS
On off Output Voltage Overshoot Amplitude				5	%Vout
Efficiency	100% Load	91.5	93.5		%	Vin=500Vdc，Vo=28Vdc，Tc=25℃
Efficiency	50% load	91.5	93.5		%	Vin=500Vdc，Vo=28Vdc，Tc=25℃

3. General Characteristics

Items		Minimum	Typical Value	Maximum	Unit	Remark
Isolation Voltage	input-output	4250			Vdc	Testing Condition：10mA/60s; No breakdown.
	Input to Case	3535			Vdc
	Output to Case	1500			Vdc
Insulation Resistance		100			MΩ	Relative humidity:90%; Under standard atmospheric pressure, 500Vdc voltage.
MTBF		2			MHrs	Rated input, rated output,Tc=25℃
Operation Temperature		-55		80	℃	M grade, aluminum substrate temperature
Operation Temperature		-40		80	℃	T grade, aluminum substrate temperature
Storage Temperature		-55		125	℃	Working Temperature
Relative Humidity		5		95	%	non-condensing
Storage Humidity		5		95	%	non-condensing
Size		116.86113.9			mm	L * W * H
Weight		225			g

Structure & Size
1. Overall Dimensions （Unit：mm）

Note：
1. Case Material: Aluminum substrate + Plastic Enclosure;
2. For Pin 5、6、13-18, the diameter is 2.0mm; Other pin diameters are 1.0mm, Pin Tolerance: ±0.1mm;
3. Unmarked Tolerance: x.x±0.5mm.

2. Pin Definition

Pin	Name	Function
1	NC	NOT CONNECTED
2	NC	NOT CONNECTED
3	ON/OFF（+）	ON/OFF Remote control input positive end
4	ON/OFF（-）	ON/OFF Remote control input negative end
5	Vin（+）	Input voltage positive end
6	Vin（-）	Input voltage negative end
7	Vaux	Auxiliary power output positive end（(reference: Vout（-）)
8	Start_Sync	Synchronize start（optional）
9	Ishare	Current sharing end
10	Trim	Output voltage trimmer end
11	S(+)	Remote compensation positive input end
12	S(-)	Remote compensation negative input end
13、14、15	Vout（-）	Output voltage negative end
16、17、18	Vout（+）	Output voltage positive end

Typical Application

The power module has a built-in filter, which can meet the general application requirements. If a power system with higher requirements is needed, an external filter network can be added to the input circuit. The typical application is shown as Figure (13).

Figure (13) Typical application circuit

Components recommendations

Components Tag Number	Description
R1,R2	470KΩ，1/2W
C1，C2	47μF/450Vd Capacitor
C3	solid-state capacitor or high-molecular polymer capacitor,1500μF/50V

Note:

1. When the operating temperature is lower than -25 ° C and the input voltage rises at a fast rate (for example, greater than 10Vdc/μs), to prevent module damage caused by high input surge voltage, It is recommended that at least one CBB capacitor of 2.2μF/1000vdc and no less than 20μF input capacitance (under test condition: -55℃ and10Khz) be added at the input end, or other anti-surge circuits be added. In applications, it is recommended that according to the actual test result.

2. When adding EMI circuit, please match the input capacitance to prevent high surge voltage at the input, which may damage the module.

3.There is no fuse inside the module. To improve security, connect a fast fusing type fuse externally at the module input. The fuse is connected to the Vin(+), and the fast fusing 10A fuse is selected.

4. Please use the shortest way to connect to the module terminal.

5. Please confirm the allowable pulsating current value of the capacitor used.

Remote Control Switch

The control mode of the remote terminal is: negative logic.
Status of the power module as following:

Control Method	electrical level of ON/OFF
Control Method	low level	dangling	high level
negative logic	Module turn on	Module turn on	Module turn off

Connection diagram of ON/OFF

Figure (14) Remote control mode diagram

Output Voltage Regulation

The applied resistance between Trim and S(+) and Trim and S(-) respectively, it can increase or decrease the output voltage in the 25.2-30.8Vdc range. When the resistance is added between the Trim and the S(+), the output voltage will be increased; When the resistance is added between the Trim and the S(-), the output voltage will be reduced. During the adjustment process, keep the adjusting resistance close to the power module terminal as possible; When this function is not required, Trim suspended.

Figure (17) Output voltage up-regulation diagram Figure(18) Output voltage down-regulation diagram

Up-regulation resistance formula Down-regulation resistance formula

Note:

2. Vout: Output voltage after output adjustment
3. Vout norm: Output nominal voltage: 28Vdc
4. The maximum rated power of the module remains unchanged, if the output voltage increases, the output current will decrease accordingly.
5. The maximum output current of the module is unchanged, if the output voltage is reduced, the maximum output current remains unchanged.
6. The maximum output voltage cannot exceed 30.8Vdc;The input voltage less than 450Vdc,It can only be raised by 5%.
7. The ends of S(+) and S(-)cannot be used suspended.If the ends of S(+) and S(-) are not used, the end of S(+) can be connected to Vout(+),and the end of S(-) can be connected to Vout(-).
8. When adjusting the output voltage during the operating state, adjust the corresponding resistance value slowly; If need to quickly adjust the resistance value of the resistor, be sure to turn off the machine.

Output Voltage Remote Compensation

The power module has the function of remote output voltage compensation which can automatically compensate the voltage drop on the output lead. As Figure (19) : Connect the s(+) and S(-) ends to both ends of the load respectively through the twisted pair cable, and the voltage at both ends of this contact is the rated output voltage. When this function is not required, the s(+) terminal is short connected with the output Vout(+), and the S(-) terminal is short connected with the output Vout(-).

Figure (19) Output Voltage Remote Compensation Circuit

Note:
1. The maximum output voltage cannot exceed 30.8Vdc;The input voltage less than 450Vdc,It can only be raised by 5%.
2. The maximum rated power of the module remains unchanged, if the output voltage increases, the output current will decrease accordingly.
3. The polarity of the output voltage of S(+) and S(-) must be consistent; Otherwise, the power module will enter protection state.

Looking forward to the choice of our customers, and always ready to provide you with services。 Submission

Looking forward to the choice of our customers, and always ready to provide you with services。

Submission