GM7230HV 150KHz, 60V/3A STEP DOWN VOLTAGE SWITCHING REGULATORS Description Features GM7230HV 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. GM7230HV is available in fixed output voltages of 3.3V, 5V, and a versatile Adjustable output version. 3.3V, 5V, 12Vand Adjustable output versions Adjustable version output voltage range 1.23V to 57V VOUT accuracy is to ± 2% under specified input voltage the output load conditions These regulators are simple to use and require minimum number of external components. The features include internal frequency compensation and a fixed-frequency oscillator. 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 150 kHz fixed frequency internal oscillator The GM7230HV is high-efficiency replacements for popular three-terminal linear regulators, and is requiring a smaller heat sink or even no need heat sink. GM7230HV 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. GM7230HV operates at a switching frequency of 150 kHz which allowing smaller size filter components than what would be needed with lower frequency switching regulators. GM7230HV series are available in a standard 5lead TO-220, 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) LCD Monitors GM7230HV-5.0 Unregulated DC Input Feedback 1 VIN Output CIN 470μF 4 GND 3 L1 68μH 2 5V regulated output, ON/OFF 5 D1 1N5824 COUT 470μF www.gammamicro.com.tw GM7230HVV2.01 Typical Application Circuits 1 GM7230HV 150KHz, 60V/3A STEP DOWN VOLTAGE SWITCHING REGULATORS Marking Information and Pin Configurations – Green Products (Top View) TO-220-5 TO-263-5 GM7230HVG VVAYWW GM7230HVG VVAYWW GM7230HVV2.01 5. ON/OFF 4. Feedback 3. GND 2. Output 1. VIN 5. ON/OFF 4. Feedback 3. GND 2. Output 1. VIN 2 G: Green Product VV: Voltage suffix (15 = 1.5V, 50 = 5.0V…A = Adj) A: Assembly / Test site code Y: Year WW: Week GM7230HV 150KHz, 60V/3A STEP DOWN VOLTAGE SWITCHING REGULATORS Ordering Information – Green Products Ordering Number Output Voltage GM7230HV-ATA5RG Package Shipping TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube TO-263-5 800 Units / Reel TO-220-5 50 Units / Tube Adj GM7230HV-ATB5TG GM7230HV-3.3TA5RG 3.3 GM7230HV-3.3TB5TG GM7230HV-5.0TA5RG 5.0 GM7230HV-5.0TB5TG GM7230HV-12TA5RG GM7230HV-12TB5TG GM7230HVV2.01 12 3 GM7230HV 150KHz, 60V/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 to VIN + 0.3 V Feedback Pin Voltage -0.3 to 25 + 0.3 V -1.0 V Internally Limited - 36 ℃/W - 65 to 150 ℃ + 150 ℃ Operating Temperature Range - 40 to 125 ℃ Minimum EDS Rating (Note 2) 2 kV + 260 ℃ Output Voltage to Ground (Steady State) Power Dissipation Thermal Resistance – Junction to Ambient (JA) ** 2 square inch of FR-4, double sided, 1oz. minimum copper weight, is recommended Storage Temperature Range Maximum Junction Temperature Lead Temperature (Soldering, 10 sec) Block Diagram ON/OFF VIN Current Source Bias 1.23V Reference 2.5V Reference Start UP 220 COMP Current Limit 2.5V COMP FB GM R2 220mV 3A Switch AMP COMP Latch Driver R1 GM7230HVV2.01 Reset 4 For Adj, R2 = 0 and R1 = OPEN Freq. Shift 150KHz OSC Thermal Limit OUTPUT GND GM7230HV 150KHz, 60V/3A STEP DOWN VOLTAGE SWITCHING REGULATORS Electrical Characteristics: GM7230HV-ADJ (Specifications with standard type face are for T = 25°C, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Output Voltage 8V VIN 60V, 0.2A ILOAD 3A, Symbol VOUT VOUT = 5V Efficiency VIN =12V, ILOAD=3.0A, VOUT = 5V Min 1.193 1.180 η Typ 1.230 Max 1.267 1.280 79 Unit V % Electrical Characteristics: GM7230HV-3.3 (Specifications with standard type face are for T = 25°C, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Output Voltage 5.5V VIN 60V, 0.2A ILOAD 3A Efficiency VIN =12V, ILOAD=3.0A Symbol VOUT Min 3.168 3.135 η Typ 3.300 Max 3.432 3.465 77 Unit V % Electrical Characteristics: GM7230HV-5.0 (Specifications with standard type face are for T = 25°C, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Output Voltage 8V VIN 60V, 0.2A ILOAD 3A Efficiency VIN =12V, ILOAD=3.0A Symbol VOUT Min 4.800 4.7500 η Typ 5.000 Max 5.200 5.250 79 Unit V % Electrical Characteristics: GM7230HV-12 (Specifications with standard type face are for T = 25°C, and those with bold face type apply over full Operating Temperature rage) Condition Output Voltage 15V VIN 60V, 0.5A ILOAD 3A Symbol Min Typ 11.52 Efficiency VIN =15V, ILOAD=3.0A VOUT η Max Unit 12.48 12.00 11.40 V 12.60 83 % GM7230HVV2.01 Parameter 5 GM7230HV 150KHz, 60V/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, 5V, and Adjustable version, and VIN = 24V for 12V version, ILOAD = 500mA) Parameter Condition Symbol Feedback Bias Current VFB=1.3V Only) Line Regulation 8V VIN 60V, ILOAD = 0.2A LNR 0.3 % Load Regulation VIN = 12V, 0.2A ILOAD 3A LDR 0.3 % (Adjustable Version Oscillator Frequency Ib fo Oscillator Frequency of Short Circuit Protection (SCP) VOUT < 40% from Nominal, IOUT = CL Saturation Voltage IOUT = 3A, No outside circuit, VFB=0V Max Duty Cycle (ON) Min Typ -50 -10 133 120 VFB=0V, force driver ON DCMAX 100 Min Duty Cycle (OFF) VFB=12V, force driver OFF, (VFB =15V for 12V version) DCMIN Current Limit Peak Current, No outside circuit, VFB=0V Output = -1.0V, No outside circuit, VFB=12V 168 180 50 - Output=0V, No outside circuit, VFB=12V 150 lCL 1.35 Unit nA -100 VSAT Output Leakage Current Max kHz kHz 1.5 1.7 V - % 0 % 7.0 A 3.8 5.3 -300 -50 µA -30 -3 mA lQ - 5 8 mA lSTBY - 30 220 μA lL Quiescent Current VFB=12V, force driver OFF, Standby Quiescent Current ON/OFF Pin = 5V (OFF), VIN = 60V ON/OFF Pin Logic lnput Level Low (ON) VIH - 1.3 0.6 High (OFF) VIL 2.0 1.3 - VLOGlC = 2.5V (OFF) IH 5 15 μA VLOGlC IL 0.02 5 μA TJ 160 SD Pin lnput Current Thermal Shutdown Temperature = 0.5V (ON) V ℃ GM7230HVV2.01 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. 6 Note 2: The human body model is a 100pF capacitor discharged through a 1.5KΩresistor into each pin. GM7230HV 150KHz, 60V/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 induc tance 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 GM7230HV, to keep the sensitive feedback wiring short. 1 4 Feedback VIN VIN Unregulatedd DC Input L1 68μH GM7230HV-x.x 3 GND CIN 470μF 2 VOUT VOUT D1 5 ON/OFF L O A D COUT 470μF Figure 1 Fixed Ouput Votlage Versions CIN = 470μF, Aluminum Electrolytic COUT = 470μF, 25V, Aluminum Electrolytic D1 = Schottky L1 = 68μH VIN VIN Unregulatedd DC Input CIN 470μF L1 68μH GM7230HV-A 3 GND VOUT 2 VOUT 5 ON/OFF R2 D1 COUT 470μF Figure 2 Adjustable Ouput Votlage Versions CIN = 470μF, Aluminum Electrolytic COUT = 470μF, 25V, Aluminum Electrolytic D1 = Schottky L1 = 68μH VOUT = VREF (1 + R2/R1) R1 L O A D GM7230HVV2.01 1 4 Feedback 7 GM7230HV 150KHz, 60V/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) 0.596– 0.612 (15.14 – 15.54) 0.028– 0.036 (0.71 – 0.91) 7° 3° 0.200– 0.216 (5.08 – 5.48) 0 -8° 0.067 Typ. (1.70) 0.224– 0.272 (5.70 – 6.90) 0.092 – 0.108 (2.34 – 2.74) 0.012 – 0.021 (0.31 – 0.53) 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 – 0.185 (4.45 – 4.75) 0.100 – 0.120 (2.54 – 3.05) 0.149 – 0.153 (3.78 – 3.89) GM7230HVV2.01 0.330 – 0.350 (8.38 – 8.89) 8 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) GM7230HV 150KHz, 60V/3A STEP DOWN VOLTAGE SWITCHING REGULATORS Ordering Number GM 7230HV A TA5 R APM Gamma Micro Package Type Shipping Type TA5: TO263-5 TB5: TO220-5 R: Taping & Reel T: Tube Circuit Type Output Voltage A: Adj 3.3 = 3.3V 5.0 = 5.0V 12 = 12.0V G G: Green Note: 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) GM7230HVV2.01 Green products: 9