P: Positive N: Negative

Transcription

1 As the most powerful member of Glary s new EGeneration power module, the E8 provides three outputs including 12V, V and 3.3V from 18~36V or 36~7V input ranges with industry standard 1/8Brick pin assignment. The efficient converter core is designed with patented BuckReset Forward topology, which cooperates with special designed PartialResonantSynchronousRectifier stages at 4kHz switching frequency to efficiently deliver more power, achieving 94% of conversion efficiency and 36W/in3 power density. A proprietary ultrafast current limiting circuit is also embedded in the E 8 series to eliminate the so called ShortCircuitCurrentRunaway, which is a destructive high output current driven by the minimum output voltage caused by nonzero propagation delay of the current limiting loop of the PWM converter. With this technology, the E8 can largely cut the delay time from 3us to 6nS, effectively shifting the current limit set point to be higher than that of conventional converters without reliability impact, providing superior driving capability to motors and capacitive loads. To provide higher power and improve the system reliability, the E8 series utilizes a proprietary wideband Droop Current Sharing control circuit, which allows directly connecting the outputs of modules without a noise sensitive current share bus. System built by paralleling multiple E8 modules is capable to respond full scale step load within 2μS without evident overshot and ringing. The E8 modules are also built with AntiBackDriving circuit to prevent the reversed current and further reduce the power loss. All the power semiconductor chips of E8 are attached onto the inner surface of a low profile sixsided metallic case to spread heat to the outer surface homogeneously, and further result in lower thermal resistance for better cooling. The package is designed to allow external cooling means to be attached on its top or bottom sides by using four M2 screws, which provide sufficient mechanical strength to install the module on applications of vehicles for resisting harsh vibration. The cavity of E8 metal case is vacuum potted with high thermal conductivity silicone, which helps the heat transfer and maintains hydrostatic pressure balance in the high strength metallic case to withstand pressure range from 1mBar to 1Bar. E8 can effectively simplify the system power design of deep water probes, high altitude instruments and other equipments that its conventional cousins cannot. MODEL NAME SYSTEM E a b c d XXXX Series VIN VOUT Startup / Shutdown Enable Pin Length Standoff Suffix E8 24:18V~36V 48:36V~7V I: 4ºC / +11ºC A: 6ºC / +13ºC P: Positive N: Negative Classification only if used 12= 12V =.V The selected option codes for the abcd section in the model number determine various options for the user. For example, the E82412IN1 module is configured to has negative enable logic,.16 pin length,.2 standoff height with 4ºC ~ +11ºC of Startup / Shutdown setting MODEL LIST (Contact to factory for special specifications) Part Number Maximum Input Maximum Output Efficiency Preliminary Data Sheet Part Number Maximum Input Maximum Output Efficiency E V~36V 32W 12.V/2A 3W 93% E V~7V 38W 12.V/3A 4W 94% E824 18V~36V 3W.V/A 27W 92% E848 36V~7V 33W.V/7A 3W 92% E V~36V 2W 3.3V/6A 21W 9% E V~7V 26W 3.3V/8A 264W 9% Since the E8 modules are designed to fulfill some critical mechanical and environmental requirements, which cannot be managed by just few digits of model name. Please contact Glary or our local distributors to obtain an additional Part Code for purchasing of the specific E8 part. http: service@glary.com Fax: / 6 R18A

2 COMMON SPECIFICATIONS Absolute Maximum Ratings Temperature Storage C to +12 C Operation: Transient (1mS): Input to Output Input to Case Output to Case Input Voltage Range Isolation Voltage.V to +8Vdc.V to +4Vdc 1V Maximum V Maximum 2.KV Minimum 1.KV Minimum 1.KV Minimum.V to +12Vdc Remote Control General Parameters OTP Bellcore TR332 issue 6 TC C (E84812abcd) See Startup / Shutdown Weight Metal Enclosed 32g Logic High Logic Low +3.V to +6.V V to +1.V MTBF Control Functions Remote Control Input Current of Remote Control Pin.mA ~ +1.mA Input Off State Input Current VNOM +36V to +7Vdc +18V to +36Vdc +34.V to +36.Vdc +17.V to +18.Vdc +31.2V to +33.2Vdc +1.6V to +16.6Vdc 6mA Max LatchState Input Current VNOM 8mA Max Input Capacitance 2.uF Max 4.uF Max Operation Voltage Range Power ON Voltage Ranges Power OFF Voltage Ranges Output Limitations Part Number Capacitive Load CE Prebiased Voltage VB Reverse Current IB Short Circuit Output Current IS E82433 <47uF@1mΩ Load <3.1V <1mA@VB 2mΩ Load E824 <22uF@9mΩ Load <4.7V <1mA@VB 2mΩ Load E82412 <22uF@48mΩ Load <11.4V <ma@vb 2mΩ Load E84833 <47uF@42mΩ Load <3.1V <1mA@VB 2mΩ Load E848 <22uF@72mΩ Load <4.7V <1mA@VB 2mΩ Load E84812 <22uF@364mΩ Load <11.4V <8mA@VB 2mΩ Load Note http: service@glary.com Fax: / 6 R18A

3 Model Number: E84812 MODEL PARAMETERS General Conversion Efficiency Typical See efficiency plots Switching Frequency Typical 4KHz Reflected Input Ripple Current LEXT = 1uH 2mA rms/6mapp Input Ripple Rejection (<1KHz) VNOM, Full Load db Voltage Accuracy Typical ±1.% Line Regulation Full Input Range ±.2% Load Regulation %~1% ±.2% Temperature Drift 4 C ~1 C ±.3%/ C Output Tolerance Band All Conditions ±4% Ripple & Noise (2MHz) PeakPeak (RMS) 3% (1%) VO Over Voltage Protection VNOM, 1% Load 11~13 %VO Output Current Limits VNOM 18%~12% Voltage Trim VNOM, 1% Load ±1% Step Load (2.A/μS) %~7% Load ±6%Vo/μS StartUp Delay Time VNOM, Full Load 2mS/2mS Input/Output TYPICAL WAVES AND CURVES Startup waveform of E84812 (VIN: 48V, Load: 33A) Transient response of E84812 (VIN: 48V, Load: 22.A/1A@2.A/μS) 1 Input/Output ripples of E84812 (VIN: 48V, Load: 33A, LIN=1uH) W 8 % V 7 36V 48V 7 48V 7V 7V Efficiency plot of E Power loss curves of E84812 http: service@glary.com Fax: / 6 R18A

4 Model Number: E84812 DERATING CURVES m/s.m/s 1.m/s 1.m/s 2.m/s ColdPlate m/s.m/s 1.m/s 1.m/s 2.m/s ColdPlate 1 2 Ta Calculated derating of E84812I Ta Calculated derating of E84812A VOLTAGE DROP COMPENSATION The resistors R+OUT and ROUT on the righthand side circuit represent the impedances of the power distribution bus contributing voltage drops V+BUS and VBUS respectively. The voltage drop V +BUS can be eliminated by connecting the +S to the positive node of the load. The S pin functions differently as it can disable the droop current sharing, compensate the voltage drop VBUS, manipulate the load regulation of droop current sharing function or enhance the step load performance. By connecting a resistor RS between the S pin and the negative node of the voltage on the load can be regulated. The values of R S for eliminating different VBUS and droop current sharing regulation at full load condition are listed in table below, which can be calculated from the equation righthand below by leting I O= IRATED and VO= VRATED. Precision resistor with less than 1% of tolerance is recommended for R S. VBUS 6mV 12mV 18mV 24mV 3mV 36mV 42mV 48mV 4mV 6mV RS(Ω) I O )V RATED I RATED R S = 3 IO V O +V BUS +( 1)V RATED 6 I RATED ( V BUS * Please consult Glary Power for manipulating load sharing and dynamic performance. TRIM AND TRIM TABLE The output of the E84812 power module can be adjusted for higher or lower than the rated voltage level by connecting the TRIM pin through a resistor to the pins of S or +S respectively as shown as on the right hand side. The resistor for trimming output voltage higher or lower are denoted as RU and RD, which have different resistances for each different output voltage level. The resistance table for trimming the output voltage with 1% of step are listed as below for reference. Trim Up +1% +9% +1% RU (KΩ) % Trim Down RD (KΩ) +2% 2% +3% 3% +4% 4% +% +6% +7% +8% % 6% 7% 8% 9% 1% * Please contact Glary Power if a trim range beyond ±1% is needed. http: service@glary.com Fax: / 6 R18A

5 DROOP CURRENT SHARING Fig. 1 shows schematic of the droop current sharing connection by using EGeneration modules. The droop current sharing function allows directly connecting outputs of multiple modules in parallel without current sharing bus. The reliable current sharing is achieved not only by minimizing the output voltage error but also the balancing the impedance of distribution bus. The output voltage error between modules determines the output current error constantly as show in Fig. 2. However, as shown in Fig. 3, the ratio of the shared current error for each module is gradually approaching to zero while the total output current increases. 4% 3% 3% Module 2% ut 2% 1% Module1(11.96V) 1% Module2(11.986V) % Module3(12.9V) % 1% 2% 3% 4% % 6% 7% 8% 9% 1% Total Output Current Fig. 2. Current sharing error 6% 4% 2% Share Error % 2% 4% Module1(11.96V) 6% Module2(11.986V) 8% Module3(12.9V) 1% 1% Fig. 1. Schematic of droop current sharing 2% 3% 4% % 6% 7% 8% 9% 1% Total Output Current Fig. 3. Related current sharing error The bandwidth of the droop current sharing loop is comparable to that of the voltage loop, which can respond to high current slew rate load transient without high current peak deviation. Fig. 4 shows waveforms of two Eseries modules in current sharing responding to a A to 2A step load, the maximum current slew rate is 2.A/μS limited by the used electrical load for testing. The waveform shows that the current error of two paralleled modules in the time period of A load is relatively large due to a significantly output voltage error, which has been reduced with a very short of settling time in the time period of the 2A load current. Fig. 4. Stepload response A/2A@2.A/μS NOTE: 1. It is recommended that the input should be protected by fuses or other protection devices. 2. Specifications are subject to change without notice. 3. Printed or downloaded datasheets are not subject to Glary document control. 4. Product labels shown, including safety agency certificates, may vary based on the date of manufacture.. Information provided in this documentation is for ordering purposes only. 6. This product is not designed for use in critical life support systems, nuclear control systems or other such applications, which necessitate specific safety and regulatory standards other than the ones listed in this datasheet. IMPORTANT In order to secure effective usage of converter and the validity of Glary's service and warranty coverage, please refer to the application notes for general usage. For needs of usage beyond the application notes, please contact to Glary headquarter or our regional sales representative office for help. http: service@glary.com Fax: / 6 R18A

6 MECHANICAL DRAWING.2 Pin Length.48 (12.2) OUT(8) S(7) TRIM(6) +S() +OUT(4) 1.2 (2.9).8 (21.9) (61.2) (6.88) Baseplate Side +IN(3) IN(1) ON/OFF(2) Pin Side M2 X 4 Dimensions and Pin Connections Designation Function Description Pin # Dimensions: inches (mm) Tolerances:.xx±.2 (.x±.) IN Negative input 1 PC Remote control. To turnon and turnoff output. 2 +IN Positive input 3 Weight: 32g +Vo Positive output 4 Base plate: Anode oxide aluminum alloy +S Positive remote sense TRIM Output voltage adjust 6 S Negative remote sense 7 Vo Negative output 8.xxx±.1 (.x±.2) Mounting inserts: M2 or throughhole Maximum torque: 1.3inIb (.1Nm) Pin material: Copper alloy or Brass Pin plating: Golden over Nickel http: service@glary.com Fax: / 6 R18A