GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Description Features GM7130HV series is designed to provide all the active function for a step-down (buck) switching regulator, and drives a maximum load current as high as 3A line and load regulations. GM7130HV is available in fixed output voltages of 3.3V, 5V, 12V and a versatile Adjustable output version. These regulators are simple to use and require minimum number of external components. The features include internal frequency compensation and a fixed-frequency oscillator. The GM7130HV is high-efficiency replacements for popular three-terminal linear regulators, and is requiring a smaller heat sink or even no need heat sink. GM7130HV performs well with standard inductors from most of manufacturers, and simplifying the design of switch-mode power supplies. External shutdown is included with 80 µA (typical) standby current. The output switch has cycle-by-cycle current limiting as well as thermal shutdown for full protection under fault conditions. 3.3V, 5V, 12V and Adjustable output versions Adjustable version output voltage range 1.23V to 57V VOUT accuracy is up to ± 2% under specified input voltage the output load conditions Input voltage range up to 60V Requires only 4 external components with High efficiency TTL shutdown capability, low power standby mode Built-in thermal shutdown, current limit protection Uses standard inductors 52 kHz fixed frequency internal oscillator GM7130HV operates at a switching frequency of 52 kHz which allowing smaller size filter components than what would be needed with lower frequency switching regulators. GM7130HV series are available in a standard 5lead TO-220, TO220B and TO263 packages. Application Pre-regulator for linear regulators On-card/board switching regulators High-efficiency step-down buck regulator Positive to negative converter (buck-boost) Typical Application Circuits Feedback 4 1 VIN L1 100μH Output CIN 100μF GND 3 2 ON/OFF 5 D1 1N5822 5V regulated output, COUT 680μF www.gammamicro.com.tw GM7130HVV2.05 GM7130HV-5.0 7V – 60V Unregulated DC Input 1 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Marking Information and Pin Configurations (Top View) TO-220-5 TO-220B-5 TO-263-5 GM7130HVG VVAYWW GM7130HVG VVAYWW GM7130HVG VVAYWW GM7130HVV2.05 5. ON/OFF 4. Feedback 3. GND 2 2. Output 1. VIN 5. ON/OFF 4. Feedback 3. GND 2. Output 1. VIN 5. ON/OFF 4. Feedback 3. GND 2. Output 1. VIN G: Green Product VV: Voltage suffix (15 = 1.5V, 50 = 5.0V…A = Adj) A: Assembly / Test site code Y: Year WW: Week GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Ordering Information Ordering Number Output Voltage Package Shipping TO-263-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube GM7130HV-ATB5BTG TO-220-5B 50 Units / Tube GM7130HV-3.3TA5TG TO-263-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-220-5B 50 Units / Tube TO-263-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-220-5B 50 Units / Tube TO-263-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-220-5B 50 Units / Tube GM7130HV-ATA5TG GM7130HV-ATA5RG Adj GM7130HV-ATB5TG GM7130HV-3.3TA5RG 3.3 GM7130HV-3.3TB5TG GM7130HV-3.3TB5BTG GM7130HV-5.0TA5TG GM7130HV-5.0TA5RG 5.0 GM7130HV-5.0TB5TG GM7130HV-5.0TB5BTG GM7130HV-12TA5TG GM7130HV-12TA5RG GM7130HV-12TB5TG GM7130HV-12TB5BTG GM7130HVV2.05 12 3 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Absolute Maximum Ratings (Note 1) Rating Value Unit Maximum Supply Voltage 63 V ON/OFF Pin Input Voltage -0.3 + VIN + 0.3 V Feedback Pin Voltage -0.3 + VIN + 0.3 V -1.0 V Internally Limited - - 65 to 150 °C + 150 °C Operating Temperature Range - 40 to 125 ℃ Minimum EDS Rating (Note 2) 2 kV + 260 °C Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range Maximum Junction Temperature Lead Temperature (Soldering, 10 sec) Block Diagram FB 4 VIN R2* Regulator With Enable Error Amplifier Comparator R1 1.0K Gnd 3 VOUT = 3.3V, R2 = 1.7K VOUT = 5.0V, R2 = 3.1K VOUT = 12V, R2 = 8.84K VOUT = ADJ, R1 = OPEN, R2 = 0Ω GM7130HVV2.05 Driver 5 ON/OFF 1.23V Reference 52KHz Oscillator 4 1 Reset Thermal Shutdown & Current Limit 2 VOUT GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Electrical Characteristics: GM7130HV-ADJ (Specifications with standard type face are for TJ = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Feedback Voltage Efficiency Condition (Note 3) Symbol VIN = 12V, ILOAD = 0.5A, VOUT = 5V, Circuit of Fig 2. 8.0V VIN 60V, 0.5A ILOAD 3A, VOUT = 5V, Circuit of Fig 2. VIN =12V, ILOAD=3.0A, VOUT = 5V Min Typ 1.217 VOUT 1.193 Unit 1.243 1.230 1.180 η Max V 1.267 1.280 77 % Electrical Characteristics: GM7130HV-3.3 (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition (Note 3) Symbol 6V VIN 60V, 0.5A ILOAD 3A, VOUT VIN =12V, ILOAD=3.0A 3.168 η Max Unit 3.366 3.300 3.135 Circuit of Fig 2 Efficiency Typ 3.234 VIN = 12V, ILOAD = 0.5A, Circuit of Fig 2. Output Voltage Min 3.432 V 3.465 75 % Electrical Characteristics: GM7130HV-5.0 (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition (Note 3) Symbol 8V VIN 60V, 0.5A ILOAD 3A, VOUT VIN =12V, ILOAD=3.0A 4.800 η Max Unit 5.100 5.000 4.750 Circuit of Fig 2. Efficiency Typ 4.900 VIN = 12V, ILOAD = 0.5A, Circuit of Fig 2. Output Voltage Min 5.200 V 5.250 77 % Electrical Characteristics: GM7130HV-12 (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Condition (Note 3) Symbol 15V VIN 60V, 0.5A ILOAD 3A, VOUT VIN =15V, ILOAD=3.0A 11.52 η Max Unit 12.24 12.00 11.40 Circuit of Fig 2. Efficiency Typ 11.76 VIN = 25V, ILOAD = 0.5A, Circuit of Fig 2. Output Voltage Min 12.48 V 12.60 88 % GM7130HVV2.05 Parameter 5 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Electrical Characteristics: All Output Voltage Versions (Specifications with standard type face are for TJ = 25°C, and those with bold face type apply over full Operating Temperature rage. Unless otherwise specified, VIN = 12V for 3.3V, 5.0V and Adj version, VIN = 25V for 12V version, ILOAD = 500mA) Parameter Condition Symbol Min Typ Feedback Bias Current VOUT =5V (Adjustable Version Only) Ib - 50 Oscillator Frequency (Note 8) fo Saturation Voltage lOUT = 3A (Notes 4) VSAT - Max Duty Cycle (ON) (Note 5) DC 93 Current Limit Peak Current (Notes 4, 8) lCL Quiescent Current Standby Quiescent Current Unit 100 nA 500 47 58 52 42 kHz 63 1.8 1.4 98 % 6.9 3.5 A 7.5 2 lL Output = -1V (Notes 6, 7) ON/OFF= 5V (OFF) - 5.8 Output =0V (Notes 6, 7) (Note 6) V 2.0 4.2 Output Leakage Current Max 7.5 - mA 30 lQ - 5 10 mA lSTBY - 50 200 μA VIH - 1.2 1.0 Low (ON) 0.8 ON/OFF Pin V Logic lnput Level 2.2 High (OFF) ON/OFF Pin Input Current VIL 1.4 - 2.4 VLOGlC = 2.5V (OFF) IH 12 30 VLOGlC IL 0 10 = 0.5V (ON) μA Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. GM7130HVV2.05 Note 2: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). 6 Note 3: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the GM7130HV is used as shown in the Figure 2 test circuit, system performance will be as shown in system parameters section of Electrical characteristics. Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output. Note 5: Feedback pin removed from output and connected to 0V. Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V, versions, and +25V for the 12V and 15V versions, to force the output transistor OFF. Note 7: VIN =40V (60V for high voltage version). Note 8: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self protections feature lowers the average power dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Test Circuit and Layout Guidelines Careful layout is important with any switching regulators. Rapidly switching currents associated with wiring inductance generate voltage transients which can cause problems. To minimize inductance and ground loops, the lengths of the leads indicated by heavy lines in Figure 1& 2 below should be kept as short as possible. Single point grounding (as indicated ) or ground plane construction should be used for best results. When using the Adjustable version, place the programming resistors as close as possible to GM7130HV, to keep the sensitive feedback wiring short. 1 4 Feedback GM7130HV-x.x VIN VIN Unregulatedd DC Input 2 Output 3 GND CIN 100μF 5 ON/OFF L1 100μH VOUT D1 D1 MBR360 COUT 1000μF L O A D Figure 1 Fixed Ouput Votlage Versions CIN = 100μF, 75V, Aluminum Electrolytic COUT = 1000μF, 25V, Aluminum Electrolytic D1 = Schottky, MBR360 L1 = 100μH GM7130HV-ADJ VIN VIN Unregulatedd DC Input CIN 100μF 3 GND L1 100μH VOUT 5.0V 2 VOUT 5 ON/OFF R2 D1 MBR360 COUT 1000μF Figure 2 Adjustable Ouput Votlage Versions CIN = 100μF, 75V, Aluminum Electrolytic COUT = 1000μF, 25V, Aluminum Electrolytic D1 = Schottky L1 = 100μH VOUT = VREF (1 + R2/R1) where VREF = 1.23V and R1 is between 1K to 5K R1 L O A D GM7130HVV2.05 1 4 FB 7 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Application Hints Input Capacitors (C IN ) The regulator input pin must be by-passed with at least a 100μF electrolytic capacitor to maintain stability. The capacitor’s leads must be kept short, and located near GM1730HV. If the operating temperature range includes temperature below -25°C, the input capacitor value may need to be larger. With most electrolytic capacitors, the capacitance value decreases and the ESR increase with lower temperature and age. It is suggested to parallel a ceramic or solid tantalum capacitor to increase the stability at cold temperature. It is n should be used for best results. When using the Adjustable version, place the programming resistors as close as possible to GM7130HV, to keep the sensitive feedback wiring short. Inductor Selection All switching regulators have two basic modes of operation: continuous and discontinuous. The difference between the two types relates to the inductor current, whether it is flowing continuously, or if it drops to zero for a period of time in the normal switching cycle. Each mode has distinctively different operating characteristics, which can affect the regulator performance and requirements. The GM7130HV can be used for both continuous and discontinuous modes of operation. Inductors are available in different styles such as pot core, toriod, E-frame, bobbin core, etc., as well as different core materials, such as ferrites and powdered iron. The least expensive, the bobbin core type, consists of wire wrapped on a ferrite rod core. This type of construction makes for an inexpensive inductor, but since the magnetic flux is not completely contained within the core, it generates more electromagnetic interference (EMI). This EMI can cause problems in sensitive circuits, or can give incorrect scope readings because of induced voltages in the scope probe. GM7130HVV2.05 An inductor should not be operated beyond its maximum rated current because it may saturate. When an inductor begins to saturate, the inductance decreases rapidly and the inductor begins to look mainly a resistor (the DC resistance of the winding). This will cause the switch current to rise very rapidly. Different inductor types have different saturation characteristics, and this should be kept in mind when selecting an inductor. The inductor manufacturer’s data sheets include current and energy limits to avoid inductor saturation. 8 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Package Outline Dimensions – TO-263-5 0.176 – 0.184 (4.47 – 4.67) 0.389– 0.408 (9.88 – 10.18) 0.046 – 0.054 (1.17 – 1.37) 0.061 – 0.069 (1.56 – 1.76) 0.322– 0.339 (8.20 – 8.60) 0.028– 0.036 (0.71 – 0.91) 0.410 (10.41) 0.596– 0.612 (15.14 – 15.54) 7° 0.575 (14.61) 3° 0.200– 0.216 (5.08 – 5.48) 0.092 – 0.108 (2.34 – 2.74) 0 -8° 0.067 Typ. (1.70) 0.425 (10.8) 0.224– 0.272 (5.70 – 6.90) 0.012 – 0.021 (0.31 – 0.53) 0.042 (1.07) 0.067 (1.70) 0.085 (2.16) Package Outline Dimensions – TO-220-5 0.048 – 0.052 (1.22 – 1.32) 0.400 + 0.015 0.400 – 0.005 (0.38+ 0.18) (0.38 +- 0.03) 0.149 – 0.153 (3.78 – 3.89) 0.175 – .185 (4.45 – 4.75) 0.100 – 0.120 (2.54 – 3.05) 0.330 – 0.350 (8.38 – 8.89) 0.525 – 0.555 (13.34 – 14.10) 0.030 – 0.040 (0.76 – 1.02) 0.057 – 0.077 (1.45 – 1.96) 0.105 + 0.010 0.105 – 0.010 (2.67 + 0.25) (2.67 +- 0.38) 0.015 + 0.007 0.015 – 0.001 (0.38+ 0.18) (0.38 +- 0.03) GM7130HVV2.05 0.149 – 0.153 (3.78 – 3.89) 9 GM7130HV 3A STEP DOWN VOLTAGE SWITCHING REGULATORS Ordering Number GM 7130HV A APM Gamma Micro Circuit Type TA5 R G Output Voltage Package Type Shipping Type A: Adj 3.3 = 3.3V 5.0 = 5.0V 12 = 12.0V TA5: TO263-5 TB5: TO-220-5 TB5B: TO-220B-5 R:Taping & Reel T:Tube Blank: Pb-free G: Green Note: Pb-free products: RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020. Suitable for use in Pb-free soldering processes with 100% matte tin (Sn) plating. GM7130HVV2.05 Green products: 10 Lead-free (RoHS compliant) Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight)